As we go lower from kingdom to species, the number of common characters at each taxon:
1. Goes on decreasing
2. Goes on increasing
3. Remains same
4. There is no pattern to this
Members of Kingdom Protista:
1. are primarily aquatic
2. do not have membrane bound organelles
3. are all ciliated or flagellated
4. reproduce exclusively by asexual means
Echinoderms are not characterized by:
1. An absence of excretory system
2. Bisexual animals
3. Usually external fertilization
4. Indirect development with free swimming larva
Identify the incorrect statement :
1. Heterotrophic bacteria are important decomposers
2. Diatoms are chief producers in the oceans
3. The pigments of Euglenoids are identical to those present in higher plants
4. Very few protozoans are autotrophs
Match each item in Column I with one in Column II and select your answer from the codes given below:
Column I | Column II | ||
A. | Diatoms | a. | Protein-rich layer of pellicle |
B. | Dinoflagellates | b. | Cell wall embedded with silica |
C. | Euglenoids | c. | Spores with true walls |
D. | Slime moulds | d. | Cellulose plates in the cell wall |
Codes:
A | B | C | D | |
1. | b | a | c | d |
2. | b | d | a | c |
3. | b | c | a | d |
4. | b | a | d | c |
All the following statements regarding Basidiomycetes are correct except:
1. | The mycelium is branched and septate |
2. | Asexual spores and vegetative reproduction are generally not found |
3. | Sex organs are absent |
4. | Basidiospores are exogenously produced on the basidium |
Match the Scientists in Column I with their contribution in the field of virology given in Column II and select your answer from the codes given below:
Column I | Column II | ||
A. | Ivanowsky | a. | Recognized tobacco mosaic is caused by microbes smaller than bacteria |
B. | Beijerinck | b. | Demonstrated extract of infected tobacco plants could cause infection in healthy plants |
C. | Stanley | c. | Showed that viruses could be crystallized |
Codes:
A | B | C | |
1. | a | b | c |
2. | a | c | b |
3. | b | a | c |
4. | b | a | d |
Match each item in Column I with one in Column II and select the correct answer from the codes given:
Tissue | Location | ||
A | Cuboidal brush bordered epithelium | P | Proximal convoluted tubule of the nephron |
B | Ciliated columnar epithelium | Q | Fallopian tubes |
C | Dense regular connective tissue | R | Tendon |
D | Dense irregular connective tissue | S | Skin |
Codes:
A | B | C | D | |
1. | P | Q | R | S |
2. | Q | P | S | R |
3. | Q | P | R | S |
4. | P | Q | S | R |
Classification of organisms on the basis of gene sequencing is
1. Cytotaxonomy
2. Karyotaxonomy
3. Chemotaxonomy
4. Classical taxonomy
Identify the organism that shows the following characteristics.
(a) Zygotic meiosis
(b) Causes red tide of the sea
(c) Mesokaryon organisation
(d) Whirling whips
1. Noctiluca
2. Gonyaulax
3. Melosira
4. Navicula
Read the following and choose the incorrect statement
1. Majority of red algae are marine with greater concentrations found in the warmer areas.
2. Thallus of Marchantia is dorsiventral and closely appressed to the substrate.
3. In Sequoia, reduced male gametophyte is called pollen grain and its endosperm represents future sporophytes.
4. Wolffia is the smallest flowering plant.
Gametophyte in the pteridophytes is
(i) Small, inconspicuous.
(ii) Long lived, unicellular.
(iii) Mostly photosynthetic thalloid or saprophytic.
(iv) Short lived, haploid.
How many statements are correct with respect to gametophyte?
1. Two
2.Three
3. Four
4. One
Development of the zygotes into young embryo takes within the female gametophytes in
1. Adiantum.
2. Selaginella.
3. Riccia.
4. Batrachospermum.
Coralloid roots of gymnosperms are/have
1. Irregular and possess large number of roots hairs.
2. Symbiotic association with Rhizobium.
3. Symbiotic association with N2 - fixing cyanobacteria.
4. VAM
In pteridophytes, gametophyte that develops in the homosporous species is usually
1. Monoecious and has events, precursor to the seed habit.
2. Dioecious and does not lead to seed habit.
3. Monoecious and does not lead to seed habit.
4. Dioecious and has events, precursor to the seed habit.
Match the classes of pteridophyte given in column-I with their respective members given in column-II
Column I | Column II | ||
(a) | Psilopsida | (i) | Selaginella |
(b) | Lycopsida | (ii) | Adiantum |
(c) | Pteropsida | (iii) | Psilotum |
(d) | Sphenopsida | (iv) | Equisetum |
Select the correct answer from the following
(a) | (b) | (c) | (d) | |
1. | (iii) | (i) | (iv) | (ii) |
2. | (i) | (iii) | (ii) | (iv) |
3. | (iii) | (i) | (ii) | (iv) |
4. | (i) | (iv) | (iii) | (ii) |
Read the following statements and select the incorrect
ones
(a) Mosses have an elaborate mechanism of spore
dispersal.
(b) In liverworts, the haploid free living sporophyte is
formed by spore germination.
(c) Vegetative reproduction in Polytrichum occurs by
budding in the secondary protenema.
(d) Marchantia is a heterosporous bryophyte.
(e) Growth of bog moss ultimately fills ponds and lakes
with soil
1. (a), (b) and (c)
2. (d) and (e) only
3. (b) and (d) only
4. All except (a)
Perhaps the biggest reason for the enormous success of Arthropods is?
1. Chitinous exoskeleton
2. Diverse appendages
3. Respiration by tracheoles
4. Internal fertilization
Which of the following statements is not correct with respect to the epithelial tissue?
1. It covers the external surface of the body and the internal surface of many organs.
2. The neighbouring cells are held together by cell junctions and there is very little intercellular material.
3. The epithelial cells rest on a cellular basement membrane that separates it from underlying connective tissue.
4. There is no blood vessel supplying the nutrients to the epithelial cells.
One example of animals having a single opening
to the outside that serves both as mouth
and as anus is
1. Octopus
2. Asterias
3. Ascidia
4. Fasciola
Animals without excretory system, separate sexes,
and calcareous endoskeleton are applicable for
1. Chaetopeura
2. Ophiura
3. Limulus
4. Spongilla
Which of the following structure is associated with
locomotion ?
(i) Parapodia.
(ii) Water vascular system.
(iii) Radula.
(iv) Proboscis.
1. (i), (ii), (iii), (iv)
2. (i) only
3. (i), (ii) only
4. (i), (iii) only
Blood is different from other connective tissue
because
(i) It is mesodermal in origin.
(ii) Blood cells do not form the composition of blood
plasma or matrix.
(iii) It contains different kind of cells performing
different function.
(iv) It lack fibres.
1. (i), (ii), (iii), (iv)
2. (ii), (iv) only
3. (iv) only
4. (ii) only
Areolar connective tissue contains
(i) Semi-fluid ground substance containing modified
polysaccharide.
(ii) Fibroblast cells.
(iii) Mast cells.
(iv) Macrophages.
1. (i), (ii), (iii), (iv)
2. (ii), (iii), (iv) only
3. (i), (ii) only
4. (i) only
Cartilage is present
A. In the tip of nose and middle ear joints
B. Between adjacent bones of vertebral column
C. Between adjacent bones of limbs and hands in adults
1. A, B and C
2. A and B
3. B and C
4. A and C
Match the organism in Column-I with its excretory structure in Column-II
|
Column-I |
|
Column-II |
(A) |
Cockroach |
(p) |
Nephridia |
(B) |
Earthworm |
(q) |
Proboscis gland |
(C) |
Balanoglossus |
(r) |
Kidney |
(D) |
Clarias |
(s) |
Malpighian tubules |
1. (A)(s),(B)(p),(C)(q),(D)(r)
2. (A)(s),(B)(p),(C)(r),(D)(q)
3. (A)(q),(B)(p),(C)(r), (D)(s)
4. (A)(s), (B)(q),(C)(r),(D)(p)
Which one of the following sets of animals belong to a single taxonomic group?
1. Cuttlefish, jellyfish, silverfish, dogfish, starfish
2. Bat, pigeon, butterfly
3. Monkey, chimpanzee, man
4. Silkworm, tapeworm, earthworm
Select the correct statement about class-Aves
1. They are warm blooded (homoiothermous) animals and are able to maintain a constant body temperature
2. Respiration occurs through lungs and air sacs connected to lungs for supplement respiration
3. They are oviparous with separate sexes, internal fertilisation and direct development
4. All of the above
In the following diagram A, B, C and D
represent
1. A - Seta, B - Leaves, C- Rhizoids, D - Capsule
2. A - Leaf, B - Rhizoids, C- Scales, D - Root hair
3. A - Capsule, B - Seta, C- Leaves, D - Rhizoids
4. A - Capsule, B - Foot, C- Leaves, D - Rhizoids
An artificial group within fungi is
1. Ascomycetes
2. Deuteromycetes
3. Basidiomycetes
4. Phycomycetes
Which of the following is a disease caused by
prion?
1. Kala-azar
2. Parkinson’s disease
3. Creutzfeldt-Jacob disease
4. Gas gangrene
A free living aerobic soil bacterium capable of
fixing nitrogen is
1. Azotobacter
2. Clostridium
3. Rhizobium
4. Streptococcus
Which of the following combinations of phylum and description is incorrect?
1. | Echinodermata–branch Bilateria, coelom from archenteron |
2. | Nematoda–roundworms, pseudocoelomate |
3. | Cnidaria–radial symmetry, polyp and medusa body forms |
4. | Porifera - gastrovascular cavity, mouth from blastopore |
Which of the following is a true statement about
cardiac muscle cells?
1. They lack an orderly arrangement of actin and
myosin filaments
2. They have less extensive sacroplasmic reticulum
and thus contract more slowly than smooth
muscle cells
3. They are connected by intercalated discs,
through which action potentials spread to all cells
in the heart
4. They have a resting potential more positive than
an action potential threshold
Vertebrates and seastars may seen as different as two
animal groups can be, yet they share
1. The same type of body symmetry as adults.
2. A high degree of cephalization.
3. Certain developmental pattern, including the type
of coelom formation.
4. The presence of endoskeleton that include
cranium
Unlike placental Mammals, both Monotremes
(Parofotherian) and Marsupials
1. Have some embryonic development outside the
Mother uterus.
2. Lack Mammary gland.
3. Lack body hairs.
4. Lay eggs
All the following are present in sponges, except
1. Spicules
2. Choanocytes
3. A digestive tract
4. Sexual and / or asexual reproduction
Which of the following is not true for three domain
system?
1. Divides kingdom monera into two domains.
2. Third domain includes all eukaryotic organisms.
3. It resulted in six kingdom classifications.
4. It is not phylogenetic.
Archaebacteria differ from other bacteria on the
basis of
1. Cell membrane structure.
2. Cell wall structure.
3. Presence of vacuole.
4. flagella structure.
In case of protists sexual reproduction can be by
1. Cell fusion
2. Zygote formation
3. Triple fusion
4. Both 1 and 2
Which of the following have pigment similar to higher
plants?
1. Group which causes red tide.
2. Group which is chief producer of ocean.
3. Group when deprived of light behaves as heterotroph.
4. Group where spore have cellulosic cell wall
Which of the following is not correctly matched?
1. | Inert Crystals - Virus | 2. | Free RNA - Viroids |
3. | Normal protein - Prions | 4. | Symbionts - Lichen |
Find out the correct match from the following table:-
|
Column-I |
Column-II |
Column-III |
(i) |
Radula |
Rasping organ |
Pila |
(ii) |
Hooks and suckers |
Taenia |
Annelida |
(iii) |
Tube feet |
Asterias; Dentalium |
Echinodermata |
(iv) |
Comb plates |
Pleurobrachia; Aurelia |
Ctenophora |
1. (i) only
2. (i) and (ii)
3. (iii) only
4. (ii) and (iii)
Excretory system is absent, sexes are separate,
fertilization is usually external this is correct for :
1. | 2. | ||
3. | 4. |
Which of the following epithelium their main function is to provide protection against chemical and mechanical stresses?
1. Simple epithelium.
2. Compound epithelium.
3. Columnar epithelium.
4. Cuboidal Epithelium
Mark the correct match with the group and its
characteristic?
1. Arthropoda Compound eye and wings.
2. Mammalia Viviparity.
3. Echinodermata Calcareous endoskeleton.
4. Annelida Fresh water and segmented body.
Compound epithelia is present in -
1. Dry surface of the skin.
2. Moist surface of buccal cavity.
3. Inner lining of ducts of salivary gland.
4. All of these
Match the following cell structure with its characteristic feature:
Column I | Column II | ||
(a) | Tight junctions | (i) | Cement neighboring cells together to form sheet |
(b) | Adhering junctions | (ii) | Transmit information through chemicals to another cell |
(c) | Gap junctions | (iii) | Establish a barrier to prevent leakage of fluid across epithelial cells |
(d) | Synaptic junctions | (iv) | Cytoplasmic channels to facilitate communication between adjacent cells |
Select the correct option from the following:
Options: | (a) | (b) | (c) | (d) |
1. | (ii) | (iv) | (i) | (iii) |
2. | (iv) | (ii) | (i) | (iii) |
3. | (iii) | (i) | (iv) | (ii) |
4. | (iv) | (iii) | (i) | (ii) |
Match the organisms in Column I with habitats in Column II.
Column I | Column II | ||
(a) | Halophiles | (i) | Hot springs |
(b) | Thermoacidophiles | (ii) | Aquatic environment |
(c) | Methanogens | (iii) | Guts of ruminants |
(d) | Cyanobacteria | (iv) | Salty areas |
Select the correct answer from the options given below:
Options: | (a) | (b) | (c) | (d) |
1. | (iv) | (i) | (iii) | (ii) |
2. | (i) | (ii) | (iii) | (iv) |
3. | (iii) | (iv) | (i) | (i) |
4. | (ii) | (iv) | (iii) | (i) |
A prokaryotic autotrophic nitrogen fixing symbiont is found in :
1. Alnus
2. Cycas
3. Cicer
4. Pisum
Which one is wrong statement ?
1. Mucor has biflagellate zoospores
2. Haploid endosperm is typical feature of gymnosperms
3. Brown algae have chlorophyll a and c and fucoxanthin
4. Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms
Select correct combination of the statements regarding
the taxonomical aids.
A. Herbaria serve as quick referral systems in
taxonomical studies.
B. Keys are generally analytical in nature.
C. Manuals provide the index to the plant species
found in a particular area.
D. Museums have collections of preserved animal
specimens only, for study and reference.
1. A, B, C
2. B, D
3. A, B
4. A, C
What is incorrect statements-
1. Organisms that can respond to stimuli are with a well developed nervous system..
2. Generally growth and reproduction are mutually exclusive events in higher organism.
3. Mules and sterile worker bees do not reproduce.
4. Metabolic reactions may take place in isolated cell-free systems
What is a, b, c, and d in the given table for algae?
Class |
Pigment |
Stored food |
Flagella |
Chlorophyceae |
Chl. a, b |
__a__ |
2-8 equal |
__b__ |
Chl. a, c, Fucoxanthin |
Laminarin |
__c__ |
Rhodophyceae |
Chl. a, d, Phycoerythrin |
__d__ |
Absent |
1. | a : Starch; b : Pheophyceae; c : 2, Lateral equal; d : Floriden starch |
2. | a : Glycogen; b : Pheophyceae; c : 2 Lateral unequal; d : Floriden starch |
3. | a : Starch; b : Pheophyceae; c : 2 apical unequal; d : Floriden starch |
4. | a : Starch; b : Pheophyceae; c : 2 Lateral unequal; d : Floriden starch |
Read the following statements :
(a) More than one Archegonia
(b) Show symbiotic associated with Nitrogen fixing Cyanobacteria and fungus
(c) Show heterosporous nature
(d) Reduced male gametophyte is called a pollen grain
The above statement is related to which option?
1. Bryophytes
2. Gymnosperms
3. Pteridophytes and Gymnosperm
4. Gymnosperm and Angiosperm
In Planaria, waste material of food digestion and Nitrogenous waste material removed from
1. Mouth and mouth
2. Body wall and body wall
3. Mouth and Flame-cell
4. Mouth and Body wall
Endoskeleton of calcareous ossicles, external fertilization, adults shows radial symmetry, development indirect.
The above-given feature is true for:-
1. Echinus, Asterias
2. Pila, ophiura
3. Antedon, Aplysia
4. Pinctada, cucumaria
Select the incorrect statement
1. The columnar epithelium is present in the stomach and intestine
2. Cilia move the particle in a specific direction
3. Cilia are present in fallopian tube and bronchioles
4. In PCT simple squamous epithelium is present
Which one of the following is not the function of cnidoblasts (sting cell)?
1. Anchorage
2. Defense
3. Caputure of prey
4. Reproduction
Open circulatory system is present in ?
1. Nereis
2. Ascidia
3. Octopus
4. Branchiostoma
In pteridophytes, antheridium are present in :-
1. Leafy gametophyte
2. Prothallus
3. Sporophyll
4. Protonema
Identify the following diagrams and these represent:
1. (a) radial symmetry, (b) bilateral symmetry
2. (a) bilateral symmetry, (b) radial symmetry
3. (a) asymmetrical, (b) radial symmetry
4. (a) bilateral symmetry, (b) asymmetrical
Bioluminescence is well marked in member of which phylum?
1. Porifera
2. Echinodermata
3. Ctenophora
4. Platyhelminthes
Which of the following feature(s) is/are exclusive in angiosperms :-
a. Presence of fruit
b. Double fertilization
c. Female gametophyte
d. Presence of flowers
e. Formation of endosperm
f. Presence of vessels and companion cells
Tick the right one :-
1. a, b, c, e
2. b, c, d, e
3. b, d, e, f
4. a, b, d, f
Correct flow water current in sponges is:-
1. Ostia OsculumSpongocoelOutside
2. OsculumSpongocoelOstiaOutside
3. OstiaSpongocoelOsculumOutside
4. OsculumOstiaSpongocoelOutside
Tube within a tube plan is found in
1. Coelenterata
2. Ctenophora
3. Platyhelminthes
4. Aschelminthes
Bacillus, Coccus, Vibrio, and Spirillum are four basic shapes of:-
1. Bacteria
2. PPLO
3. Mycoplasma
4. Both (2) and (3)
Which of the following is not correct comparison between Locusta (A) and Prawn (B), illustrated in the following diagram?
| Character | Locusta (A) | prawn (B) |
1. | Body Segmentation and abdomen | Head, Thorax and Abdomen | Cephalothorax |
2. | Excretory organs | Malpighian tubules | Green glands |
3. | Respiratory organ | Trachea | Gills |
4. | Eye | Compound | Simple |
1. 1
2. 2
3. 3
4. 4
The correct definition of the genus may be:-
1. Genus is an aggregate of distantly related species
2. Genus is a group of species present in a given area
3. Genus is an aggregate of closely related species
4. Genus is a group species present in a common habitat
Reproduction is a character of living organism but it cannot be regarded as defining property because:-
1. Sexual reproduction involves only a single parent
2. Lower organism do not reproduce under stressful environment
3. All living beings do not have the capacity to reproduce
4. For lower plants, growth and reproduction are mutually inseparable phenomenon
Which of the following is not true for amoeboid protozoan?
1. Pseudopodia helps in feeding
2. Silica shells present in marine form
3. Contractile vacuole
4. Flagella helps in locomotion
Red tides are due to the rapid multiplication of
1. Cyanobacteria
2. Chlamydomonas
3. Gonyaulax
4. Diatoms
The highest category in the taxonomic hierarchy is
1. Kingdom
2. Phylum
3. Class
4. Species
The system of the naming of organisms was developed by
1. Robert Hooke
2. Carolus Linnaeus
3. T. Schwann
4. Ernst Mayr
In males pelvic fins bear claspers in
1. Carcharodon
2. Pterophyllum
3. Exocoetus
4. Labeo
Which of the following is not true about red algae?
1. Predominance of r-phycoerythrin in their body
2. Majority of them are found in colder areas
3. The red thalli of most of the red algae are
multicellular
4. The food is stored as floridean starch
False statement with respect to Ascidia is
1. Present exclusively in marine water
2. It is a urochordate and notochord is present only in larval tail
3. It is a vertebrate because it has a notochord
4. It is a protochordate
Choose the correct features regarding the most common asexual spores of sac fungi.
a. Haploid
b. Exogenous
c. Thick walled
d. Produced during unfavorable conditions
e. Grow in basipetal manner
1. a, c and d
2. a, b and c
3. b, c, d and e
4. All except c and d
Read the given features
(a) Presence of cnidoblasts
(b) Alternation of generation
(c) Extracellular and intracellular digestion
All of the above given features are observed in
1. Hydra
2. Physalia
3. Aurelia
4. Adamsia
Which of the following is a correct match with respect to members listed and corresponding taxon?
1. Earthworm, silkworm, hookworm – Annelida
2. Sea hare, sea lily, sea urchin – Echinodermata
3. Cuttle fish, devil fish, apple snail – Mollusca
4. Sea horse, flying fish, dog fish – Chondrichthyes
Find the incorrect match
1. Isogametes – Cladophora
2. Isogametes – Rhizopus
3. Heterogametes – Ulothrix
4. Heterogametes – Volvox
Which group of animals belong to the same phylum?
1. Pennatula, Physalia, Planaria
2. Ctenoplana, Culex, Cucumaria
3. Anopheles, Aedes, Ancylostoma
4. Locusta, Laccifer, Limulus
Presence of radula and feather like gills are the characteristic features of
1. Pila
2. Delphinus
3. Pavo
4. Rattus
Metagenesis is exhibited by
1. Hydra
2. Pennatula
3. Obelia
4. Adamsia
Cloaca, common chamber of alimentary canal, urinary and reproductive tract is not found in
1. Amphibians
2. Cartilaginous fishes
3. Birds
4. Bony fishes
The most abundant type of loose connective tissue is
1. Areolar tissue
2. Cartilage
3. Tendon
4. Bone
Red algae are mostly found in A with abundance in the B .
A B
1. Freshwater habitats Warmer areas
2. Marine habitats Colder areas
3. Freshwater habitats Colder areas
4. Marine habitats Warmer areas
Match the column I and column II with respect to types of epithelial tissue and their function.
Column-I Column-II
a. Glandular epithelium (i) Secretes hormones and milk
b. Squamous (ii) Forms a diffusion epithelium boundary
c. Columnar epithelium (iii) Helps in secretion and absorption
d. Ciliated epithelium (iv) Responsible for movement of ova and mucus
Choose the correct option.
1. a(i), b(ii), c(iii), d(iv)
2. a(ii), b(iii), c(iv), d(i)
3. a(iii), b(iv), c(i), d(ii)
4. a(iv), b(i), c(ii), d(iii)
In angiosperms, zygote undergoes
1. Meiosis
2. Mitosis
3. Differentiation
4. Both (2) and (3)
Green algae do not store food in the form of
1. Protein
2. Starch
3. Oil droplets
4. Glucose
An absorption line of the lowest frequency in the transition of hydrogen spectra is
1. n=1 to n=2
2. n=3 to n=8
3. n=2 to n=1
4. n=8 to n=3
The correct order of increasing energy of atomic orbital is:
1. 3s, 3p, 4s, 3d, 4p
2. 3s, 3p, 3d, 4s, 4p
3. 3s, 3p, 4s, 4p, 3d
4. 3s, 3p, 3d, 4p, 4s
An atom forms an ion by losing three electrons. The ion has an electronic configuration [Ar]3d6. The symbol of the ion is :
1. | Fe3+ | 2. | Ni3+ |
3. | Co3+ | 4. | Mn+3 |
The molality of a 15% (w/vol.) solution of H2SO4 of density 1.1g/cm3 is-
1. 1.2
2. 1.4
3. 1.8
4. 1.6
The outermost electronic configuration of the most electronegative element is :
1. ns2np3
2. ns2np4
3. ns2np5
4. ns2np6
The correct sequence of increasing order of density is:
1. Li < K< Na < Rb < Cs
2. Li < Na < K < Rb < Cs
3. Cs < Rb < K < Na < Li
4. K < Li < Na < Rb < Cs
In BrF3 molecule, the lone pairs occupy equatorial positions to minimize:
1. | Lone pair-bond pair repulsion. |
2. | Bond pair-bond pair repulsion. |
3. | Lone pair-lone pair repulsion and lone pair-bond pair repulsion. |
4. | Lone pair-lone pair repulsion. |
Overlap of which of the following atomic orbitals would be maximum to form the strongest covalent bond.
1. 1s-2s (σ)
2. 1s-2p (σ)
3. 2p-2p (π)
4. 2p-2p (σ)
The number of sigma bonds in P4O10 is
1. 6
2. 16
3. 20
4. 7
A sample of CaCO3 is 50% pure. On heating 1.12 litres of CO2 (at STP) is obtained. The weight of residues left (assuming non-volatile impurity) is:
(Ca = 40, C= 12, O=16)
1. | 7.8 g | 2. | 5 g |
3. | 3.8 g | 4. | 2.8 g |
Element/Ion that has the highest electron affinity is :
1. | F- | 2. | O- |
3. | O | 4. | Na |
The correct order of second ionisation energies of B, C, N, & O is
1. O > N > C > B
2. O > C > N > B
3. O > B > C > N
4. O > N >B > C
Which has highest bond energy ?
1. CO
2. CO+
3. N2
4.
What is the ratio of the number of atoms in 2.2 g of CO2 and in 1.7 g of NH3?
1. | 1/2 | 2. | 1/8 |
3. | 3/8 | 4. | 3/2 |
The element having very high electron affinity but zero ionisation enthalpy is :-
1. He (due to inert gas configuration)
2. Be (due to fully filled subshell)
3. H (due to presence of allotropes)
4. None of the above
When an electron jumps from n=5 to n=1 in a hydrogen atom, the number of spectral lines obtained is
1. | 3 | 2. | 4 |
3. | 6 | 4. | 10 |
The radius of which ion is closest to that of ion ?
1.
2.
3.
4.
On the left are given decreasing orders of elements for a certain property and on right side is given the property. The incorrect order for the given properties is:
1. : Lattice energy
2. : Electron affinity
3. : Lewis acidic character
4. : Decreasing ionic character
Which of the following interaction lies in the range of 8 - 42 kJ/mol?
1.
2. HCl...HCI
3. ...HF
4. all
The species among the following that does not exist is-
1.
2.
3.
4.
exists but does not because:
1. Nitrogen has no vacant d-subshells .
2. is unstable .
3. Nitrogen atom is much smaller than p .
4. Nitrogen is highly inert .
The bond angle between two hybrid orbitals is . The % s character in orbital is-
1. | Between 30-31% | 2. | Between 9- 12% |
3. | Between 25 -26% | 4. | Between 22-23% |
Which bond angle would result in the maximum dipole moment for the triatomic molecule
1.
2.
3.
4.
The is a planar molecule whereas is pyramidal because:
1. bond is more polar than bond.
2. Boron atom is bigger than nitrogen atom.
3. Nitrogen is more electronegative than boron.
4. has no lone pair but has a lone pair of electrons.
The correct calculate value for for:
From following arbitrary values :
1. 1950 KJ mol-1
2. 1150 KJ mol-1
3. 2300 KJ mol-1
4. None of the above.
The correct order of covalent bond character among
LiCl, BeCl2, BCl3 and CCl4, is:
1. LiCl < BeCl2 > BCl3 > CCl4
2. LiCl > BeCl2 < BCl3 < CCl4
3. LiCl < BeCl2 < BCl3 < CCl4
4. LiCl > BeCl2 > BCl3 > CCl4
The equivalent weight of in the given reaction is:
1. 16.25
2. 36.5
3. 73
4. 85.1
What volume of measured at 1 atm and 273 K will be formed by the action of 100 mL of 0.5 N KMnO4 on hydrogen peroxide in an acid solution?
The skeleton equation for the reaction is
1. 0.12 litre
2. 0.028 litre
3. 0.56 litre
4. 1.12 litre
The incorrect statement among the following is:
1. | Total orbital angular momentum of an electron in 's' orbital is equal to zero. |
2. | An orbital is designated by three quantum numbers, while an electron in an atom is designated by four quantum numbers. |
3. | The electronic configuration of N atom is |
4. | The value of m for dz2 is zero. |
The formation of the oxide ion O2- (g), from the oxygen atom requires first an exothermic and then an endothermic step as shown below,
Thus, the process of formation of O2- in the gas phase is unfavorable even though O2- is isoelectronic with neon. It is due to the fact that:
1. | Electron repulsion outweighs the stability gained by achieving noble gas configuration. |
2. | O- ion has a comparatively smaller size than the oxygen atom. |
3. | Oxygen is more electronegative. |
4. | Addition of electrons in oxygen results in a large size of the ion. |
An electron-deficient compound among the following is:
1. | (SiH3)2 | 2. | (BH3)2 |
3. | PH3 | 4. | (CH3)2 |
The correct set of four quantum numbers for the valence electron of a rubidium atom (Z =37) is:
1. | \(5,1,1,+ {1 \over2}\) | 2. | \(6,0,0,+ {1 \over2}\) |
3. | \(5,0,0,+ {1 \over2}\) | 4. | \(5,1,0,+ {1 \over2}\) |
Isostructural pair among the following is:
1.
2.
3.
4.
What is the number of moles of O-atom in 126 amu of ?
1. 2
2.
3. 6
4.
The angular momentum of an electron in d orbital is equal to
1.
2.
3.
4. 0 h
The vapour density of a volatile chloride of a metal is 95 and the specific heat of the metal is 0.13 cal/g. The equivalent mass of the metal will be:
1. 6 g
2. 12 g
3. 18 g
4. 24 g
The wave mechanical model of the atom depends upon
1. De-Broglie concept of dual nature of electron
2. Heisenberg uncertainty principle
3. Schrodinger's principle
4. All
For any H-like system, the ratio of velocities of I, II & III orbit i.e., will be:
1. 1 : 2 : 3
2. 1 : 1/2 : 1/3
3. 3 : 2 : 1
4. 1 : 1 : 1
In photoelectric effect, the kinetic energy of photoelectrons increases linearly with the:
1. Wavelength of incident light.
2. Frequency of incident light.
3. Velocity of incident light.
4. Atomic mass of an element.
The number of hydrogen bonded water molecules(s) associated with is-
1. 3
2. 1
3. 2
4. 5
The number of electrons with the azimuthal quantum number l = 1 and 2 for Cr 24 in ground state is
1. 16 and 5
2. 12 and 5
3. 16 and 4
4. 12 and 4
The wavelength of the radiation emitted when in a H atom, the electron falls from infinity to stationary state (n=1), is:
1.
2. 192 nm
3. 406 nm
4. 91 nm
lf NA is Avogadro's number, then the number of valence electrons in 4.2 g of nitride ions (N) will be:
1. | 3.2 NA | 2. | 1.6 NA |
3. | 2.4 NA | 4. | 1.2 NA |
The amount of Zinc (atomic weight=65) necessary to produce 224 mL of H2 (at STP) by the reaction with dilute sulphuric acid will be:
1. | 0.65 g | 2. | 7.6 g |
3. | 6.5 g | 4. | 8.5 g |
Three balls are thrown from the top of a building with equal speeds at different angles. When the balls strike the ground, their speeds are respectively, then:
1.
2.
3.
4.
A ball is projected at an angle of 45, so as to cross a wall at "a" distance from the point of projection. It falls at a distance "b" on the other side of the wall. If hit the height of the wall then -
1.
2.
3.
4.
A car A is traveling on a straight level road at a uniform speed of 60 km/h. It is followed by another car B which is moving at a speed of 70 km/h. When the distance between them is 2.5 km, car B is given a deceleration of 20 km/h2. After how much time will car B catch up with car A?
1. 1 hr
2. 1/2 hr
3. 1/4 hr
4. 1/8 hr
A 60 kg man stands on a spring balance in a lift. At some instant, he finds that the reading on the scale has changed from 60kg to 50 kg for a while and then comes back to the original mark. What is his conclusion?
1. The lift was in constant motion upwards.
2. The lift was in constant motion downwards.
3. The lift while in motion downward suddenly stopped.
4. The lift while in motion upward suddenly stopped.
A ball is thrown from a point on ground at some angle of projection. At the same time a bird starts from a point directly above this point of projection at a height h horizontally with speed u. Given that in its flight ball just touches the bird at one point. Find the distance on ground where ball strikes
1.
2.
3.
4.
For \(10^{(at+3)}\), the dimensions of \(a\) will be:
1. \(\left[M^0L^0T^{0}\right]\)
2. \(\left[M^0L^0T^{1}\right]\)
3. \(\left[M^0L^0T^{-1}\right]\)
4. None of these
The banking angle for a curved road of radius \(490\) m for a vehicle moving at \(35\) m/s is:
1.
2.
3.
4.
A river is 1 km wide. The banks are straight and parallel. The current is 5 km/h and is parallel to the banks. A boat has a maximum speed of 3 km/h in still water. In what direction should the boat head so as to arrive at point B directly opposite to its starting point A?
1. directly across the river
2. head upstream from the line AB
3. head
4. the trip from A to B is not possible with this speed
A force F is given in terms of time t as F = AsinCt. The dimensions of are given by:
1.
2.
3.
4.
A small coin is kept at a distance r from the centre of a gramophone disc rotating at an angular speed . The minimum coefficient of friction for which a coin will not slip is:
1.
2.
3.
4.
The velocity of a particle moving along a straight line with constant acceleration 'a' reduces to of its initial velocity in time . The total time taken by the body till its velocity becomes zero is:
1.
2.
3.
4.
To the captain of a ship A travelling with velocity km/h, a second ship B appears to have a velocity km/h. What is the true velocity of the ship B?
1.
2.
3.
4. none of these
A varying horizontal force F = at acts on a block of mass m kept on a smooth horizontal surface. An identical block is kept on the first block. The coefficient of friction between the blocks is µ. The time after which the relative sliding between the blocks prevails is:-
1.
2.
3.
4.
A block of weight W is supported by two strings inclined at 60° and 30° to the vertical. The tensions in the strings are as shown. If these tensions are to be determined in terms of W using the triangle law of forces, which of these triangles should you draw? (block is in equilibrium) :-
1. 2.
3. 4.
A student measures the mass of an object five times. The data are 2.46 kg, 2.47 kg, 2.42 kg, 2.41 kg and 2.44 kg. The reported mean mass with error should be:
1. 2.44 0.01 kg
2. 2.44 0.02 kg
3. 2.44 0.03 kg
4. 2.44 0.04 kg
Suppose you are riding a bike with a speed of 20 m/s due east relative to a person A who is walking on the ground towards the east. If your friend B walking on the ground due west measures your speed as 30 m/s due east, find the relative velocity between two reference frames A and B:-
1. The velocity of A with respect to B is 5 m/s towards the east
2. The velocity of A with respect to B is 5 m/s towards the west
3. The velocity of A with respect to B is 10 m/s towards the east
4. The velocity of A with respect to B is 10 m/s towards the west
A 100 kg gun fires a ball of 1 kg horizontally from a cliff at a height of 500 m. It falls on the ground at a distance of 400 m from the bottom of the cliff. The recoil velocity of the gun is: (Take g = 10 m/s2)
1. 0.2 m/s
2. 0.4 m/s
3. 0.6 m/s
4. 0.8 m/s
Calculate the reading of the spring balance shown in the figure: (take \(g=10\) m/s2)
1. \(60\) N
2. \(40\) N
3. \(50\) N
4. \(80\) N
In the diagram, a 100 kg block is moving up with constant velocity. Find out the tension at point P.
1. 1330 N
2. 490 N
3. 1470 N
4. 980 N
A uniform block of mass m resting on a rough horizontal plane just starts moving when pulled by a string with a force of magnitude mg making an angle of 45◦ with the horizontal. Then the block will move if it is
1. pulled by a horizontal force of magnitude mg.
2. pulled by a force of magnitude mg making an angle of 30◦ with the horizontal.
3. pushed by a force of magnitude mg making an angle of 45◦ with the horizontal.
4. pulled by a force of magnitude mg making an angle 60◦ with the horizontal.
When an object is at rest on the inclined
rough surface,
1. static and kinetic frictions acting
on the object is zero
2. static friction is zero but kinetic
friction is not zero
3. static friction is not zero and
kinetic friction is zero
4. static and kinetic frictions are not
zero
The centrifugal force appears to exist
1. only in inertial frames
2. only in rotating frames
3. in any accelerated frame
4. both in inertial and non-inertial frames
A particle of mass ‘m’ having speed v goes in a vertical circular motion such that its centre is at its origin, as shown in the figure. If at any instant the angle made by the string with a negative y-axis is then the tension in the string is:
[Take radius = R]
A particle starts from rest (with constant acceleration) and acquires velocity 20 m/s in 5s. The distance travelled by the particle in the next 2 s will be:
1. | 50 m | 2. | 48 m |
3. | 100 m | 4. | 150 m |
The angle between the position vector and the acceleration vector of a particle in non-uniform circular motion (centre of the circle is taken as the origin) will be:
1. 0°
2. 45°
3. 75°
4. 135°
In an experiment four quantities a, b, c and d are measured with percentage errors of 2%, 3%, 1%, and 0.5% respectively. A quantity \(Q\) is defined as: \(Q=\frac{a \sqrt{b}}{c^{3 / 2} d^4}\). The maximum percentage error in the calculation of \(Q\) will be:
1. 5%
2. 6%
3. 7%
4. 9%
A particle has an initial velocity m/s and it is moving with an acceleration . Velocity of the particle at \(t=2\) s will be:
1.
2.
3.
4.
Three blocks each of mass m are hanged vertically with the help of inextensible strings and ideal springs. Initially, the system was in equilibrium. If at any instant, the lowermost string is cut, then the acceleration of block B just after cutting the string will be:
1. | g | 2 | \(g \over 2\) |
3. | \(2g \over 3\) | 4. | Zero |
A body is projected with a velocity of . The maximum height attained by the projectile is (g = 10 ms–2)
1. | 0.8 m | 2. | 8 m |
3. | 4 m | 4. | 0.4 m |
If and , then the vector having the same magnitude as that of and parallel to is:
1.
2.
3.
4.
A calorie is a unit of heat (energy in transit) and it equals about \(4.2\) J where \(1\) J\(=1\) kg-m2s-2. Suppose we employ a system of units in which the unit of mass equals \(\alpha\) kg the unit of length equals \(\beta\) m, and the unit of time is \(\gamma\) s then the magnitude of calories in terms of new units is:
1. \(4.2\alpha^{-2}\beta^{-2}\gamma^{2}\)
2. \(4.2\alpha^{2}\beta^{-2}\gamma^{2}\)
3. \(4.2\alpha^{-1}\beta^{-2}\gamma^{2}\)
4. \(4.2\alpha^{-1}\beta^{2}\gamma^{-2}\)
Which of the following is the most precise device for measuring length?
1. | a vernier calliper with \(20\) divisions on the sliding scale. |
2. | a screw gauge of pitch \(1\) mm and \(100\) divisions on the circular scale. |
3. | an optical instrument that can measure the length within a wavelength of light. |
4. | both (1) and (2) |
Given , which one of the following is incorrect?
1. | a→ , b → , c → and d → must be null vectors. |
2. | The magnitude of a → + c → equals the magnitude of b → + d → . |
3. | The magnitude of a → can never be greater than the sum of the magnitudes of b → , c → and d → |
4. | b → + c → must lie in the plane of a → and d → if a → and d → are not collinear, and along the direction of a → and d → if they are collinear. |
A cricketer can throw a ball to a maximum horizontal distance of \(100~\text{m}\). How much high above the ground, can the cricketer throw the same ball?
1. \(50~\text{m}\)
2. \(60~\text{m}\)
3. \(75~\text{m}\)
4. \(100~\text{m}\)
A rocket with a lift-off mass of \(20,000\) \(\mathrm{kg}\) is blasted upwards with an initial acceleration of \(5~\mathrm{ms}^{-2}\). Then initial thrust (force) of the blast is: (Take \(g=10\) \(\mathrm{ms}^{-2}\))
1. \(7 \times 10^5 \mathrm{~N} \)
2. \(0 \)
3. \(2 \times 10^5 \mathrm{~N} \)
4. \(3 \times 10^5 \mathrm{~N}\)
Two masses 8 kg and 12 kg are connected at the two ends of a light inextensible string that goes over a frictionless pulley. The acceleration of the masses and the tension in the string when the masses are released are:
The length, breadth, and thickness of a rectangular sheet of metal are \(4.234\) m, \(1.005\) m, and \(2.01\) cm respectively. The volume of the sheet to correct significant figures is:
1. \(0.00856\) m3
2. \(0.0856\) m3
3. \(0.00855\) m3
4. \(0.0855\) m3
A jet airplane travelling at the speed of ejects its products of combustion at the speed of relative to the jet plane. What is the speed of the latter with respect to an observer on the ground?
A car moving along a straight highway with a speed of \(126\) km/h is brought to a stop within a distance of \(200\) m. How long does it take for the car to stop?
1. \(10.2\) s
2. \(9.6\) s
3. \(11.4\) s
4. \(6.7\) s
The figure gives a speed-time graph of a particle in motion along the same direction. Three equal intervals of time are shown. In which interval is the average acceleration greatest in magnitude?
1. | Interval 2
|
2. | Interval 1
|
3. | Interval 3
|
4. | Equal in all intervals |
A boy standing on a stationary lift (open from above) throws a ball upwards with the maximum initial speed he can, equal to How much time does the ball take to return to his hands?
1. 5 s
2. 10 s
3. 15 s
4. 7 s
Three girls skating on a circular ice ground of radius \(200\) m start from a point \(P\) on the edge of the ground and reach a point \(Q\) diametrically opposite to \(P\) following different paths as shown in the figure. The correct relationship among the magnitude of the displacement vector for three girls will be:
1.
2.
3.
4.
Rain is falling vertically with a speed of 30 m/s. A woman rides a bicycle with a speed of 10 m/s in the north to south direction. What is the direction in which she should hold her umbrella? [Given: tan 16º = 0.29 & tan 18º = 0.33]
1. 16º with the vertical, towards north
2. 18º with the vertical, towards north
3. 16º with the vertical, towards south
4. 18º with the vertical, towards south
A stone tied to the end of a string 80 cm long is whirled in a horizontal circle at a constant speed. If the stone makes 14 revolutions in 25 sec, what is the magnitude of the acceleration of the stone?
1. 8.1 ms-2
2. 7.7 ms-2
3. 8.7 ms-2
4. 9.9 ms-2
A body of mass 5 kg is acted upon by two perpendicular forces, 8 N and 6 N. The magnitude of the acceleration of the body is:
1. | 0.99 ms-2 | 2. | 3 ms-2 |
3. | 2 ms-2 | 4. | 0.77 ms-2 |