Identify a micronutrient for plants amongst the following:
1. Potassium
2. Phosphorus
3. Iron
4. Sulphur
Which element is required by the plants for uptake and utilization of calcium and carbohydrate translocation ?
1. Manganese
2. Boron
3. Chlorine
4. Selenium
During nitrogen fixation, nitrite is oxidized to nitrate with the help of the bacterium:
1. Nitrosomanas
2. Pseudomonas
3. Nitrobacter
4. Thiobacillus
Nitrogen-fixing nodules on the roots of non-leguminous plants like Alnus are produced by
1. Rhizobium
2. Beijernickia
3. Azotobacter
4. Frankia
For each molecule of ammonia produced by nitrogenase, the number of ATP molecules required are:
1. 4
2. 8
3. 12
4. 16
Pine seedings grown in sterile potting soil grow much slower than seeding grown in soil from the area where the seeds were collected. This is most likely because
1. the sterilization process kills the root hairs as they emerge from the seedling
2. the normal symbiotic fungi are present in the sterilized soil
3. sterilization removes essential nutrients from the soil
4. water and mineral uptake is faster when mycorrhizae are present
Water logging or over-watering a plant is dangerous and may kill the plant. Why is this so?
1. Water does not have all the necessary minerals a plant needs to grow.
2. Water neutralizes the pH of the soil.
3. The roots are deprived of oxygen.
4. Water lowers the water potential of the roots.
An action spectrum of photosynthesis was first described by:
1. Jan Ingenhousz
2. Julius von Sachs
3. T.W. Engelmann
4. Cornelius van Niel
Dark reactions of photosynthesis are actually not totally independent of light as:
(1) The initial reactions occur in the presence of light.
(2) The reaction will be inhibited by the presence of light.
(3) They can occur during the day as well.
(4) They utilize the products of the light reaction.
All the following regarding the role of xanthophylls and carotenoids in photosynthesis are correct except:
1. | They act as accessory pigments |
2. | Their peak absorption is in blue and red regions of VIBGYOR |
3. | They enable a wider range of wavelength of incoming light to be utilized for photosynthesis |
4. | They protect chlorophyll a form of photo-oxidation. |
The chloroplast stroma lamella membrane:
1. lacks PS II as well as NADP reductase enzyme.
2. lacks PS II but has NADP reductase enzyme.
3. lacks NADP reductase enzyme but has PS II.
4. has PS II as well as NADP reductase enzyme.
Which stage of the Calvin Cycle utilizes ATP?
1. Carboxylation
2. Reduction
3. Regeneration
4. Both 2 and 3
Which of the following are special features of the C4 plants?
I: | They have a special type of leaf anatomy. |
II: | They tolerate higher temperatures and show a response to high light intensities. |
III: | They lack photorespiration and have greater productivity of biomass. |
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Plants can get along without respiratory organs because of the following except:
1. | Each plant part takes care of its own gas exchange needs |
2. | Plants do not present great demands for gas exchange. |
3. | Gas diffusion in plants occurs easily over long distances in plants. |
4. | Each living cell in a plant is located quite close to the surface of the plant. |
The co-factor required for the activity of pyruvate dehydrogenase is:
1. Zinc
2. Magnesium
3. Manganese
4. Copper
In Kreb's cycle, a molecule of GTP is produced during the conversion of:
1. Citrate into Ketoglutarate
2. Succinyl-CoA into succinate
3. Succinate into malate
4. Malate into oxaloacetate
In the mitochondrial electron transport system, the term Complex III refers to:
1. NADH dehydrogenase
2. Cytochrome c
3. FADH2
4. Cytochrome bc1 complex
For each ATP produced, how many H passes through F0 from the intermembrane space to the matrix down the electrochemical proton gradient?
1. 1
2. 2
3. 3
4. 4
The formation of interfascicular cambium in plants is due to:-
1. Non-differentiation
2. Re-differentiation
3. Differentiation
4. De-differentiation
Heterophyllous development due to environment is an example of:-
1. Developmental noise
2. Norm of the reaction
3. Convergence
4. Plasticity
Gibberellic acid is a/an:-
1. lndole compound
2. Terpene
3. Adenine derivative
4. Carotenoid
The PGR used to initiate flowering and for synchronizing fruit-set in pineapples is:
1. Abscisic acid
2. Cytokinin
3. Auxin
4. Ethylene
Cytokinin does not help in:
1. Lateral shoot growth
2. Overcoming apical dominance
3. Adventitious shoot formation
4. Promoting leaf senescence
In most situations, which of the following acts as an antagonist to GAs?
1. ABA
2. IAA
3. Kinetin
4. Ethylene
Compared to retinal, chlorophyll can be described as a pigment that has a
1. narrow absorption range but high efficiency
2. narrow apsorption range but low efficiency
3. wide absorption range but high effeciency
4. wide absorption range but low efficiency
Consider the situation where photosynthesis is going on at a steady pace in a typical experiment with a light on, and carbon dioxide is being combined with ribulose-bisphosphate (RuBP) to produce 3-phosphoglycerate (3PG). Then suddenly the source of carbon dioxide is eliminated. What changes in the concentrations of 3PG and RuBP would occur?
1. 3PG levels rise, RuBP levels fall.
2. 3PG levels fall, RuBP levels rise.
3. 3PG levels rise, RuBP levels rise.
4. 3PG levels fall, RuBP levels fall.
Identify the statement that is true for C4 plants but not for C3 plants?
1. Initially fix carbon dioxide in mesophyll cells as 4-carbon long compounds.
2. Initially fix carbon dioxide in bundle sheath cells as 3-carbon long compounds.
3. Initially fix carbon dioxide in mesophyll cells as 3-carbon long compounds.
4. Initially fix carbon dioxide in bundle sheath cells as 4-carbon long compounds.
The mitochondrial electron transport chain is located in:
1. Outer membrane
2. Inner membrane
3. Inter membrane space
4. Matrix
Consider the following two statements:
I: | Except for plants in shade or in dense forests, light is rarely a limiting factor in nature for photosynthesis. |
II: | Light saturation occurs at 50% of the full sunlight. |
1. Both statements are correct and II explains I
2. Both statements are incorrect
3. I is correct and II is incorrect
4. I is incorrect and II is correct
The sites of perception of light/dark duration in the plants are the:-
1. Shoot apices
2. Leaves
3. Roots
4. Branches
Phenyl mercuric acetate (PMA) results in
1. reduced photosynthesis
2. reduced transpiration
3. reduced respiration
4. killing of plants.
When the plants are grown in magnesium deficient but urea rich soil, the symptoms expressed are:
1. yellowish leaves
2. colourless petiole
3. dark green leaves
4. shoot apex die.
Which of the following processes makes direct use of oxygen?
1. Glycolysis
2. Fermentation
3. Kreb's citric acid cycle
4. Electron transport
The main control over ATP production is allosteric inhibition, by ATP, of the enzyme that facilitates the formation of :
1. Glucose from glycogen
2. Fructose 1,6 biphosphate from Fructose 6 phosphate
3. Acetyl coenzyme A from pyruvic acid
4. Citric acid from Acetyl coenzyme A and oxaloacetic acid.
A plant requires potassium for:
(1) Holding its cells together
(2) Synthesizing chlorophyll
(3) DNA replication
(4) Opening and closing its stomata
With respect to photoperiodism, the short-day plant, the long day plant and day-neutral plant are represented respectively by:
1. A, B and C
2. B, A and C
3. C, B and A
4. A, C and B
The growth of a root elongating at a constant rate will be represented by:
1. A only
2. B only
3. Both A and B
4. Neither A nor B
In the given diagrammatic representation of ATP synthesis in mitochondria, A, B and C are respectively:
1.
2.
3.
4.
In the given diagram, X, Y, and Z respectively represent the absorption spectrum of:
1. Chlorophyll a, Chlorophyll b, and Carotenoids
2. Chlorophyll b, Chlorophyll a, and Carotenoids
3. Chlorophyll b, Carotenoids, and Chlorophyll a
4. Chlorophyll a, Carotenoids, and Chlorophyll b
In the diagrammatic representation of the Hatch and Slack pathway, A and B respectively represent:
1. Mesophyll cells and Bundle sheath cells
2. Bundle sheath cells and Mesophyll cells
3. Bundle sheath cells and Palisade cells
4. Mesophyll cells and Guard cells
Consider the following statements:
l. Accessory pigments enable a wider range of light to be utilized for photosynthesis.
ll. The reaction center of PSI is P680 and that of PSII is P700.
lll. The stroma lamellae membranes lack both PSII and NADP reductase.
Which of the above statements are true?
1. l and ll only
2. l and lll only
3. ll and lll only
4. l, ll and lll
Consider the following statements:
Regarding C4 photosynthesis plants-
l. PEP is primary acceptor.
ll. OAA is primary fixation product.
lll. RuBisCO is not present in these plants.
Which of the above statements are true?
1. l and ll only
2. l and lll only
3. ll and lll only
4. l, ll and lll
Consider the following statements:
Regarding fermentation of glucose -
l. There is a partial breakdown of glucose
ll. There is no gain of ATP
lll. NADH is oxidized to NAD slowly
Which of the above statements are true?
1. l and ll only
2. l and lll only
3. ll and lll only
4. l, ll and lll
Consider the following statements:
Regarding growth in plants -
l. Cell enlargement requires water.
ll. Oxygen helps in releasing metabolic energy for growth activities.
lll. Nutrients are required for synthesis of protoplasm and act as source of energy.
Which of the above statements are true?
1. l ans ll only
2. l and lll only
3. ll and lll only
4. l, ll and lll
Match each item in column l with one item in column ll and chose your answer from the codes given below:
Column I |
Column II |
||
I. |
Malting in brewing |
1. |
Cytokinins |
II. |
Parthenocarpy in tomatoes |
2. |
Gibberellins |
III. |
Overcoming apical dominance |
3. |
Ethylene |
IV. |
Female flowers in Cucumbers |
4. |
Auxins |
I |
II |
III |
IV |
|
1. |
4 |
2 |
3 |
4 |
2. |
2 |
1 |
4 |
3 |
3. |
2 |
4 |
1 |
3 |
4. |
4 |
2 |
1 |
3 |
Match each item in Column l with one item in Column ll regarding C4 plants and chose your answer from the codes given below:
Column I |
Column II |
||
I. |
Calvin cycle |
1. |
Bundle sheath cells |
II. |
Initial carboxylation |
2. |
Mesophyll cells |
III. |
Primary CO2 acceptor |
3. |
RuBP |
IV. |
Primary CO2 fixation product |
4. |
PEP |
5. |
PGA |
||
6. |
OAA |
I |
II |
III |
IV |
|
1. |
1 |
2 |
3 |
5 |
2. |
2 |
1 |
4 |
6 |
3. |
2 |
1 |
3 |
5 |
4. |
1 |
2 |
4 |
6 |
Match each item in Column l with one item in Column ll regarding electron transport chain located in the inner mitochondrial membrane and chose your answer from the codes given below:
Column l |
Column ll |
||
l. |
Complex l |
1. |
NADH dehydrogenase |
ll. |
Complex ll |
2. |
FADH2 |
lll. |
Complex lll |
3. |
Cyt bc1 complex |
lV. |
Complex lV |
4. |
ATP synthase |
5. |
Cytochrome c oxidase |
I |
II |
III |
IV |
|
1. |
1 |
2 |
3 |
4 |
2. |
1 |
2 |
3 |
5 |
3. |
2 |
1 |
3 |
4 |
4. |
2 |
1 |
3 |
5 |
Match each item in Column I with one item in Column II and choose your answer from the codes given below :
|
Column I |
|
Column II |
I. |
Short day plant |
1. |
Rose |
II. |
Long day plant |
2. |
Dianthus |
III. |
Day neutral plant |
3. |
Tobacco |
Codes :
|
I |
II |
III |
1. |
1 |
2 |
3 |
2. |
2 |
3 |
1 |
3. |
2 |
1 |
3 |
4. |
3 |
2 |
1 |
Match each item in Column I with one item in Column II regarding plant adaptation to water scarcity and choose your answer from the codes given below :
Column I |
Column II |
||
I. |
Deep tap root |
1. |
Oleander |
II. |
Sunken stomata |
2. |
Prosopis |
III. |
Deciduous leaves |
3. |
Capparis deciduas |
IV. |
CAM pathway |
4. |
Orchids |
Codes :
I |
II |
III |
IV |
|
1. |
1 |
2 |
3 |
4 |
2. |
2 |
1 |
4 |
3 |
3. |
2 |
1 |
3 |
4 |
4. |
1 |
2 |
4 |
3 |
Three layers of cells in the retina from inside to outside are-
1. Layers of ganglion cells, bipolar cells, photoreceptor cells
2. Layers of ganglion cells, photoreceptor cells, bipolar cells
3. Layers of photoreceptor cells, ganglion cells, bipolar cells
4. Layers of bipolar cells, photoreceptor cells, ganglion cells
Mark the correct statement:
1. | Electrical synapses are more common in our neural system than chemical synapses. |
2. | The new potential in the post-synaptic neurons may be either excitatory or inhibitory. |
3. | Hypothalamus is the major coordination centre for sensory and motor signaling. |
4. | The tracts of nerve fibres that connect two cerebral hemispheres are called corpora bigemina. |
Go through the following characterization of Sympathetic and. Parasympathetic Nervous System.
I. Dilates pupil,
II. Heart rate, BP (Vasoconstriction) Glycogenolysis, dilates bronchi.
III. Constricts pupil.
IV. Induces ejaculation.
V. Gastric secretion, salivary secretion, peristalsis.
VI. Erection and urination.
1. Sympathetic - III, V, VI; Parasympathetic - I, II, IV
2. Sympathetic - I, II, IV; Parasympathetic - III, V, VI
3. Sympathetic M II, IV, VI; Parasympathetic - I, III, V
4. Sympathetic - I, III, V; Parasympathetic - II, IV, VI
How do parasympathetic neural signals affect the working of the heart?
1. Reduce both heart rate and cardiac output
2. Heart rate is increased without affecting the cardiac output
3. Both heart rate and cardiac output increase
4. Heart rate decreases but cardiac output increases
Destruction of the anterior horn cells of the spinal cord would result in loss of
1. Commissural impulses
2. Integrating impulses
3. Sensory impulses
4. Voluntary motor impulses
The basilar membrane of the cochlea
1. Is unaffected by movement of fluid in the scala of vestibule
2. Covers the oval window and round window
3. Vibrates in pattern determined by the form of the travelling wave in the fluids of the cochlea
4. Vibrates when body is subjected to linear acceleration
Human body temperature is regulated by the centre located in:
1. Cerebrum
2. Cerebellum
3. Medulla
4. Hypothalamus
Which of the following structures or regions is incorrectly paired with its function?
1. | Hypothalumus: production of releasing of hormones and regulation of temperature, hunger and thirst |
2. | Limbic system: consists of fibre tracts that interconnect different region of brain; control movement |
3. | Medulaoblogata: controls respiration and cardiovascular reflexes |
4. | Corpus callosum: band of fibre connecting left and right cerebral hemisphere. |
In the resting stage, the axonal membrane:
1. is more permeable to sodium than to potassium ions
2. is more permeable to potassium than to sodium ions
3. equally permeable to both sodium and potassium ions
4. impermeable to both sodium and potassium ions
In a chemical synapse what activates the synaptic vesicles to release its neurotransmitter into the synaptic cleft?
1. Sodium 2. Potassium
3. Chloride 4. Calcium
Damage to which of the following will result in ataxia and dysarthria?
1. Medulla oblongata
2. Cerebellum
3. Mid brain
4. Hypothalamus
Sympathetic stimulation would lead to all of the following except:
1. Dilation of pupil
2. Bronchoconstriction
3. Increased heart rate
4. Decreased gland secretions
Which cells of the human retina require Vitamin A?
1. Cells of Iris
2. Rods and Cones
3. Bipolar cells
4. Ganglionic cells
In the human eye, there are three types of cones – red, blue, and green. When these cones are stimulated equally, a sensation for which of the following colors would be produced?
1. White
2. Black
3. Orange
4. Yellow
The vomiting center in the humans is located in the:
1. Medulla oblongata
2. Pons varolii
3. Hypothalamus
4. Thalamus
Most of the neurons in the cerebral cortex are:
1. Unipolar
2. Bipolar
3. Multipolar
4. Pseudo unipolar
Which of the following parts of the human brain functions as a gateway to the cerebrum and is a major coordinating center for sensory and motor signaling?
1. Thalamus
2. Hypothalamus
3. Corpora quadrigemina
4. Pons
The number of correct statements amongst the given statements is:
I. Invertebrates do not possess endocrine systems.
II. Vasopressin, synthesized by hypotahalamus, is transported axonally to the adenohypophysis.
III. In males, FSH and androgens regulate spermatogenesis.
IV. Melanin is secreted by pineal and regulates diurnal rhythm.
V. Old persons have weak immune response due to degeneration of thymus in old persons.
1. 2
2. 3
3. 4
4. 5
Match each item in Column I with one in Column II and choose your answer from the codes given below:
Column I Column II
A. Limbic system a. Behavior
B. Thalamus b. Sensory and motor signal coordination
C. Medulla c. Gastric secretions
D. Hypothalamus d. Body temperature
A. B. C. D.
1. b a c d
2. a c b d
3. a b d c
4. a b c d
Match each item in Column I with one in Column II and choose your answer from the codes given below:
Column I | Column II | ||
(a) | Estrogen | (i) | Supports pregnancy |
(b) | Progesterone | (ii) | Secondary sexual characters in females |
(c) | FSH | (iii) | Regulates spermatogenesis |
(d) | LH | (iv) | Ovulation |
(a) | (b) | (c) | (d) | |
1. | (ii) | (i) | (iii) | (iv) |
2. | (i) | (iii) | (ii) | (iv) |
3. | (i) | (ii) | (iv) | (iii) |
4. | (i) | (ii) | (iii) | (iv) |
The adrenal cortex secretes hormones which are chemically ______ and while ______ is the main glucocorticoid, ______ is the main mineralocorticoid.
1. Peptides, Cortisol, Aldosterone
2. Steroids, Cortisol, Aldosterone
3. Peptides, Aldosterone, Cortisol
4. Steroids, Aldosterone, Cortisol
Consider the following two statements:
I. Hormones which interact with intracellular receptors mostly regulate gene expression or chromosome function.
II. Steroid hormones and iodothyronines interact with intracellular receptors.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
Low intelligence quotient abnormal skin and deafmutism are related to:
1. Low secretion of growth hormone
2. Hypothyroidism
3. Hyperparathyroidism
4. Hyposecretion of adrenal cortex hormone
Extracellular receptors must be required for the action of:
I. Oxytocin
II. Thyroxine
III. Epinephrine
IV. Glucagon
1. I, II, III & IV
2. I, IV only
3. I, III, IV
4. III & IV only
What is the location of NADP reductase enzyme involved in production of NADPH?
1. Stroma side of the membrane.
2. Mitochondrial matrix.
3. Thylakoid membrane.
4. Thylakoid lumen.
During the process of respiration redox equivalents are removed:
1. In form of hydrogen atom.
2. In form of an electron.
3. In form of H2O.
4. In form of ATP.
Identify the incorrectly matched pair:
1. Growth hormone Increases blood glucose level
2. Thyroxin Supports erythropoiesis
3. Cortisol Promotes protein anabolism
4. Glucagon Stimulates gluconeogenesis
Statement - A : Shuttles do not occur in prokaryotes.
Statement- B : NADH2 molecules produced during glycolysis can directly enter the mitochondria.
1. Only A is correct.
2. Only B is correct.
3. Both A and B are correct.
4. Both A and B are incorrect.
Complete the given reaction of the cycle present in the mitochondrial matrix:
1. A—Succinic acid; B—Pyruvate dehydrogenase.
2. A—Malic acid; B—Transacetylase.
3. A—OAA; B—Citrate synthase.
4. A— -KGA; B Thiokinase.
Which of the following is/are under the direct neural regulation of the hypothalamus?
1. Anterior pituitary
2. Posterior pituitary
3. Both 1 and 2
4. Pineal
The presence of which of the following is/are indicative of diabetes mellitus?
1. Glucosuria and ketonuria
2. Glycosuria and hematuria
3. Hematuria and ketonuria
4. None of these
Identify the hormone:
I. It favors glycogenesis
II. It favors fat synthesis and deposition
III. It favors protein anabolism
1. Cortisol
2. Insulin
3. Growth hormone
4. Adrenaline
Which one of the following pairs of the kind of cells and their secretion is correctly matched?
1. Oxyntic cells - Castle's intrinsic factor.
2. Alpha cells of Islets of Langerhans - glucagon that decreases blood sugar level.
3. Gastric glands - a digestive enzyme that hydrolyses starch.
4. Sebaceous glands - a secretion that evaporates for cooling.
How many of the hormones in the list given below interact with membrane bound receptors and regulate cellular metabolism:-
Calcitonin, Glucagon, Growth hormone, Cortisol, Thyroxin, Testosterone, Estradiol, Progesterone, Adrenalin
1. Four
2. Five
3. Six
4. Three
Identify the incorrectly matched pair:
Hormone Function
1. Melatonin Regulation of diurnal rhythm
2. Thyrocalcitonin Decreases blood calcium level
3. Thymosins Differentiation of B lymphocytes
4. Atrial natriuretic Decreases factor blood pressure
After blood flow is artificially reduced at one kidney, you would expect that kidney to secrete more of the hormone known as:
1. erythropoietin
2. angiotensinogen
3. renin
4. antidiuretic hormone
Select the option where all columns are not correctly matched:
Hormone Disease Symptom
1. Cortisol Cushing’s disease Moon faces; Buffalo torso
2. ADH Diabetes insipidus Diuresis; Polydipsia
3. PTH Tetany Muscle paralysis
4. Aldosterone Conn’s syndrome Hypertension, Hypokalemia
Glycolysis is a chain of (A) reaction which occur in the (B) of the cell.
1. (A)-Five, (B)-Mitochondria.
2. (A)-Ten, (B)-Mitochondria.
3. (A)-Eight, (B)-Cytoplasm.
4. (A)-Ten, (B)-Cytoplasm.
Inhibition of cell-division in plants is due to the deficiency of:-
1. N, S, Mn, Co
2. N, S, Mo, Si
3. Mo, S, Fe, Se
4. N, K, S, Mo
Assertion: Paratharmone is a hypercalcemic hormone.
Reason: PTH increases level in blood.
Assertion: In mitochondria, process of ATP formation with the help of electron transport system, is
called oxidative phosphorylation.
Reason: In mitochondria, energy for the creation of proton gradient is obtained from the splitting of
oxygen.
Among the following non-reducing sugar is :
(1) Glucose
(2) Fructose
(3) Sucrose
(4) Galactose
Glucose when heated with CH3OH in presence of dry HCl, a and b methyl glucoside are formed. This is because it contains
(1) An aldehyde group
(2)-CH2OH group
(3) A ring structure
(4)Five -OH group
Which of the following is step growth polymer?
1. Neoprene
2. Isoprene
3. PAN
4. Nylon-6, 6
Biodegradable polymer among the following is-
1. Polythene
2. Cellulose
3. Nylon-6
4. PVC
Buna-S is a polymer of -
1. Butadiene and Styrene
2. Butene and Styrene
3. Butadiene and Chloroprene
4. Butene and Salicylaldehyde
An example(s) of co-polymer among the following options is :
1. Nylon-6,6
2. Terylene.
3. Buna-S.
4. All of the above.
When glucose is reacted with phenyl hydrazine then osazone is formed. In this reaction how many phenyl hydrazine molecules are used ?
1. 1
2. 2
3. 3
4. 4
The two forms of glucopyranose obtained from solution of D-glucose are called
1. Isomers
2. Anomers
3. Epimers
4. Enantiomers
Buna-s is a polymer of
1. Butadiene and Styrene
2. Butene and Styrene
3. Butadiene and Chloroprene
4. Butene and Salicylaldehyde
Number of Chiral carbon atoms in cyclic b-D(+)-glucose is
1. 5
2. 4
3. 3
4. 2
Which of the following is used to make non stick cookware ?
1. PVC
2. Polysterene
3. Polyethylene
4. PTFE
Select the incorrect statement among the following
1. Aspirin is both analgesic and antipyretics
2. Ampicillin is a natural antibiotic
3. Sulphadiazine is a synthetic antibacterial
4. Some disinfectants can be used as antiseptics in lower concentrations
The structure of glycine (amino acid) is (zwitter ion). The correct statement among the following is-
1. Glycine, as well as other amino acids are amphoteric.
2. The acidic functional group in amino acids is
3. The basic functional group in acids is
4. All the statements are correct.
Which of the following vitamin is anti-oxidant?
1. Vitamin-A
2. Vitamin-K
3. Vitamin-D
4. Vitamin-E
Polyethene, PVC, teflon and neoprene are example of -
1. Homopolymer.
2. Addition hetropolymer.
3. Biodegradable polymer.
4. Copolymer.
The chemical added to soaps to impart antiseptic properties is :
1. Salvarsan
2. Bithional
3. Paracetamol
4. Iodine
The wrong statement about photochemical smog is-
1. Photochemical smog causes irritation in eyes.
2. It has a low concentration of oxidizing agents
3. It can be controlled by controlling the release of , hydrocarbon, ozone, etc.
4. Plantation of some plants helps in controlling photochemical smog.
Nylon 6,6 is a strong crystalline fibre due to the presence of intermoleculer forces which are :
1. H-bond
2. covalent bonds
3. van der Walls' attractive forces
4. ionic bonds
The monomer of the given polymer is-
1. CH3CH = CH.CH3
2. CH3CH = CH2
3. (CH3)2 C = C (CH3)2
4.
The cell membranes are mainly composed of :
2. Phospholipids
2. Proteins
3. Fats
4. Carbohydrates
The normal boiling point of water 373 K. Vapour pressure of water at temperature T is 19 mm Hg. If enthalpy of vaporization is 40.67 kJ/mol, then temperature T would be
(Use : log 2 = 0.3, R = 8.3 ) :
1. 250 K
2. 291.4 K
3. 230 K
4. 290 K
A sample of liquid of mass 18.0 g is injected into an evacuated 7.6 L flask maintained at 27.0C. If vapour pressure of at 27C is 24.63 mm Hg. What weight percentage of the water will be vapourised when the system comes to equilibrium? Assume water vapours behave as an ideal gas. The volume occupied by the liquid water is negligible compared to the volume of the container :
1. 1%
2. 10%
3. 18%
4. 20%
Numbers of possible optical isomers of alpha + glucose are
1. 10
2. 14
3. 16
4. 20
Which of the following drugs reduces fever?
1. Antibiotic
2. Antipyretic
3. Antiseptic
4. Tranquillizer
Which of the following is reducing sugar?
1. Sucrose.
2. Lactose.
3. Starch.
4. Cellulose.
Which is condensation homopolymer?
1. Terylene.
2. Buna-S.
3. PAN.
4. Nylon-6.
Which of the following is not an antibiotic?
1. Penicillin
2. Ofloxacin
3. Bithional
4. Amoxycillin
Which of the following compounds can reduce Fehling's solution?
1. Glucose.
2. Fructose.
3. Mannose.
4. All of these.
Which of the following polymers is obtained by Chain-Growth polymerisation?
1. PHBV.
2. Cis-polyisoprene.
3. Glyptal.
4. Melamine formaldehyde polymer.
Number of Chiral carbon atoms in –D(+)–glucose is
1. 5
2. 4
3. 3
4. 2
A petrol pump hosepipe for delivery of petrol is made up of
1. natural rubber
2. vulcanized rubber
3. neoprene
4. butadiene rubber
Which of the following shows mutarotation?
1. Sucrose.
2. Fructose.
3. Starch.
4. Cellulose.
Monomer unit of terylene (Dacron) polymer is:-
1. Ethylene glycol and terephthalic acid.
2. Ethylene glycol and phthalic acid.
3. Adipic acid and Hexamethylenediamine.
4. Caprolactum.
Example of Bactericidal antibiotic is/are:-
1. Penicillin.
2. Aminoglycosides.
3. Ofloxacin.
4. All.
Which polymer is used in manufacture of paints and lacquers?
1. Bakelite
2. Glyptal
3. Polypropene
4. Polyvinyl chloride
Which of the following compounds is not an antacid?
1. Aluminium hydroxide
2. Cimetidine
3. Phenelzine
4. Ranitidine
oxides glucose to ...... moles of and ...... moles of .
1. 5 and 1
2. 1 and 5
3. 2 and 4
4. 4 and 2
The compound is
1. antiseptic
2. antibiotic
3. analgesic
4. pesticide
The term biosphere is used for the zone of the earth where life exists
(1) On the lithosphere
(2) In the hydrosphere
(3) In the lithosphere and hydrosphere
(4) In the lithosphere, hydrosphere and atmosphere
Biosphere is
(1) In which individual interact to each other
(2) By which life originated
(3) The name of a bird
(4) Organic compound by which life diminishes
Which is not a renewable source
1. Sunlight
2. Coal
3. Water
4. Wind energy
Noosphere is synonyms of
(1) Environment
(2) Atmosphere
(3) Hydrosphere
(4) Stratosphere
When biosphere turns into human-dominated environment it is called
(1) Noosphere
(2) Troposphere
(3) Mesosphere
(4) Man sphere
The living organisms on or around the earth constitute
(1) Biome
(2) Biosphere
(3) Community
(4) Biocoenosis
Two springs of force constant k and 2k are connected to a mass as shown below. The frequency of oscillation of the mass is :
The mass and diameter of a planet are twice those of earth. What will be the period of oscillation of pendulum on this planet if it is a seconds pendulum on earth?
1.
2.
3.
4.
A simple pendulum performs simple harmonic motion about x = 0 with an amplitude a, and time period T. The speed of pendulum at x = a/2 will be :
A simple harmonic motion having an amplitude A and time period T is represented by the equation:
Then the values of A (in m ) and T (in sec ) are:
1. A = 5; T = 2
2. A = 10; T = 1
3. A = 5; T = 1
4. A = 10; T = 2
The displacement of a body executing SHM is given by x= A sin (2t + /3). The first time from t = 0 when the velocity is maximum is :
1. 0.33 sec
2. 0.16 sec
3. 0.25 sec
4. 0.5 sec
The maximum acceleration of a particle in SHM is made two times keeping the maximum speed to be constant. It is possible when :
1. amplitude of oscillation is double while the frequency remains constant
2. amplitude is doubled while frequency is halved
3. frequency is doubled while the amplitude is halved
4. frequency is doubled while amplitude remains constant
The potential energy of a simple harmonic oscillator of mass 2 kg in its mean position is 5J. If its total energy is 9J and its amplitude is 0.01 m, its time period would be :
1.
2.
3.
4.
A plank with a small block on top of it is undergoing vertical SHM. Its period is 2 sec. The minimum amplitude at which the block will separate from plank is :
1.
2.
3.
4.
The time period of a particle executing SHM is 8 sec. At t = 0 it is at the mean position. The ratio of the distance covered by the particle in the 1st second to the 2nd second is :
1.
2.
3.
4.
The angular velocity of motion whose equation is is : (y = displacement and t = time) -
1.
2.
3.
4.
Two particles are in SHM in a straight line. Amplitude A and time period T of both the particles are equal. At time t = 0, one particle is at displacement Y1 = + A and the other at Y2 = -A/2, and they are approaching towards each other. After what time they cross each other?
1. T/3
2. T/4
3. 5T/6
4. T/6
Two particles execute SHM of the same amplitude of \(20\) cm with the same time period along the same line about the same equilibrium position. The maximum distance between the two is \(20\) cm. Their phase difference in radians is:
1. \(\frac{2\pi}{3}\)
2. \(\frac{\pi}{2}\)
3. \(\frac{\pi}{3}\)
4. \(\frac{\pi}{4}\)
Two particles P and Q describe simple harmonic motions of the same period, the same amplitude, along the same line about the same equilibrium position O. When P and Q are on opposite sides of O at the same distance from O, they have the same speed of 1.2 m/s in the same direction. When their displacements are the same, they have the same speed of 1.6 m/s in opposite directions. The maximum velocity in m/s of either particle is
1. 2.8
2. 2.5
3. 2.4
4. 2
A particle performs SHM with a period T and amplitude a. The mean velocity of the particle over the time interval during which it travels a distance a/2 from the extreme position is :
1. a/T
2. 2a/T
3. 3a/T
4. a/2T
If a spring has a time period T and is cut into n equal parts, then the time period of each part will be :
100 gm of ice at 0°C is mixed with 100 gm of water at 100°C. What will be the final
temperature of the mixture?
1. 10°C
2. 20°C
3. 30°C
4. 40°C
A gas expands at a constant pressure of , the work done is :
1. 2.5 ergs
2. 250 J
3. 250 W
4. 250 N
Wave equations of two particles are
,
then the particles are :
1. Moving in opposite directions
2. Having a phase difference of
3. Having a phase difference of
4. In phase
Two waves 50 cm and 51 cm long produce 12 beats per second the velocity of sound is :
1. 306 m/s
2. 330 m/s
3. 340 m/s
4. 360 m/s
A stretched string of length l fixed at both ends can sustain stationary waves of wavelength given by
1.
2.
3.
4.
(n is a whole number)
Organ pipe closed at one end viberating in its third harmonic and another pipe open at both ends vibrating in its fourth harmonic are in resonance with a given tuning fork. The ratio of the length of to that of is :
1. 8/3
2. 3/8
3. 1/2
4. 1/3
Two wave trains, with intensities I and 2I respectively arrive and superpose at a point P in opposite phases. The amplitude of the superposed wave at P at that instant will be proportional to,
1.
2.
3.
4.
In a resonance tube, the first resonance with a tuning fork occurs at 16 cm and second at 49 cm. If the velocity of sound is 330 m/s, the frequency of tuning fork is :
1. 500
2. 300
3. 330
4. 165
50 tuning forks are arranged in increasing order of their frequencies such that each gives 4 beats/sec with its previous tuning fork. If the frequency of the last fork is an octave of the first, then the frequency of the tuning fork is :
1. 200 Hz
2. 204 Hz
3. 196 Hz
4. None of these
A car is moving towards a high cliff. The driver sounds a horn of frequency . The reflected sound heard by the driver has frequency . If v is the velocity of sound, then the velocity of the car, in the same velocity units, will be :
1.
2. v/3
3. v/4
4. v/2
A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at distances of 2 m and 3 m respectively from the source. The ratio of the intensities of the waves at P and Q is:-
1. 3 : 2
2. 2 : 3
3. 9 : 4
4. 4 : 9
Two sound waves are represented by the following equations :
and
Then the ratio of their amplitudes is given by:
1. 1 : 1
2. 1 : 2
3. 2 : 1
4. 2 : 5
The frequencies of sources A and B as shown in the figure are the same. The nature of interference at points P, Q and R will be, if and the two sources are in the same phase :
1. Constructive at P. destructive at Q and R
2. Constructive at P and R destructive at Q
3. Constructive at P and Q destructive at R
4. Constructive at R. destructive at P and Q
Two identical piano wires kept under the same tension T have a fundamental frequency of 600 Hz. The fractional increase in the tension of one of the wires which will lead to the occurrence of 6 beats/s when both the wires oscillate together would be :
1. 0.02
2. 0.03
3. 0.04
4. 0.01
A train is moving at a speed of 220 m/s towards a stationary object, emits a sound of frequency 1000 Hz. Some of the sound reaching the object gets reflected back to the train as an echo. The frequency of the echo as detected by the driver of the train is (speed of sound in air is 330 m/s)
1. 3500 Hz
2. 4000 Hz
3. 5000 Hz
4. 3000 Hz
A long cylindrical vessel of volume V and linear coefficient of expansion contains a liquid. The level of liquid has not changed on heating. The volume coefficient or real expansion of liquid is :
1.
2.
3.
4.
A small quantity of water of mass m at a temperature is poured on to a large mass M of ice which is at melting point. If c is the specific heat capacity of water and L the specific latent heat of fusion of ice, the mass of the ice melted is given by :
1.
2.
3.
4.
Two straight metallic strips each of thickness t and length l are riveted together. Their coefficients of linear expansion are and . If they are heated through a temperature , the bimetallic strip will bend to form an arc of radius :
1.
2.
3.
4.
A constant pressure air thermometer gave a reading of 47.5 units of volume when immersed in ice-cold water, and 67.5 units in boiling water and a reading of 74.5 units in a boiling liquid. The boiling point of the liquid is :
1.
2.
3.
4.
The latent heat of vaporization of water is 2240 J/gm. If the work done in the process of vaporization of 1g of water at is 168 J, then an increase in internal energy is :
1. 2408 J
2. 2240 J
3. 2072 J
4. 1904 J
An ideal gas changes from state a to state b as shown in figure. What is the work done by the gas in the process?
1. Zero
2. Positive
3. Negative
4. Infinite
The loss in weight of a solid when immersed in a liquid at is and at is . If the cubical coefficient of expansion of the solid and the liquid be and respectively, then is equal to:
1.
2.
3.
4.
If two rods of length L and 2L having coefficients of linear expansion and respectively are connected so that their total length becomes 3L, the average coefficient of linear expansion of the composition of rods equals:
1.
2.
3.
4. none of these
Two identical containers A and B have frictionless pistons. They contain the same volume of an ideal gas at the same temperature. The mass of the gas in A is and that in B is . The gas in each cylinder is now allowed to expand isothermally to double the initial volume. The changes in the pressure in A and B are found to be and respectively.
1.
2.
3.
4.
A gas undergoes a process in which its pressure P and volume V are related as constant. The bulk modulus for the gas in this process is :
1.
2.
3.
4.
In the cyclic process shown on the V-P diagram, the magnitude of the work done is :
1.
2.
3.
4.
A cyclic process is shown in the P-T diagram. Which of the curves show the same process on a V-T diagram?
1.
2.
3.
4.
A cyclic process is shown on the P-T diagram. Which of the curves show the same process on a V-T diagram?
1.
2.
3.
4.
A cyclic process is shown on the P-T diagram. Which of the curves show the same process on a P-V diagram?
1.
2.
3.
4.
Two containers of equal volume contain the same gas at pressures and and absolute temperatures and respectively. On joining the vessels, the gas reaches a common pressure P and a common temperature T. The ratio P/T is equal to –
1.
2.
3.
4.