Match the following:

Oxide Nature
(a) CO (i)  Basic
(b) BaO (ii) Neutral
(c) Al2O3 (iii) Acidic 
(d) Cl2O7 (iv) Amphoteric


Which of the following is the correct option? 

a b c d
1. (ii) (i) (iv) (iii)
2. (iii) (iv) (i) (ii)
3. (iv) (iii) (ii) (i)
4. (i) (ii) (iii) (iv)

Subtopic:  Acidic, Basic Character & Fajan's Rule |
 84%
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A molecule that cannot exist is-

1. Li2

2. C2

3. O2

4. He2

Subtopic:  M.O.T |
 81%
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Which of the following set of molecules will have zero dipole moment?
 

1. Boron trifluoride, hydrogen fluoride,  carbon dioxide, 1 3-dichlorobenzene
2. Nitrogen trifluoride, beryllium difluoride,  water, 1 3 -dichlorobenzene
3. Boron trifluoride, beryllium difluoride, carbon dioxide, 1 4-dichlorobenzene
4. Ammonia, beryllium difluoride, water,  1, 4-dichlorobenzene

Subtopic:  Polarity |
 78%
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Among the compounds shown below, which one will have a linear structure?

1. NO2

2. HOCl

3. O3

4. N2O

Subtopic:  Hybridisation |
From NCERT
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Match the coordination number and type of hybridization with the distribution of hybrid orbitals in space based on Valence bond theory.

Coordination number and type of hybridisation Distribution of hybrid orbitals in space
(a) 4, sp3 (i) Trigonal bipyramidal
(b) 4, dsp2 (ii) Octahedral
(c) 5, sp3d (iii) Tetrahedral
(d) 6, d2sp3 (iv) Square planar
 
(a) (b) (c) (d)
1. (ii) (iii) (iv) (i)
2. (iii) (iv) (i) (ii)
3. (iv) (i) (ii) (iii)
4. (iii) (i) (iv) (ii)
Subtopic:  Hybridisation |
 83%
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Molecule Shape or geometry of the molecule
a. PCl5 Trigonal 
b. SF6 Octahedral
c. BeCl2 Linear
d. NH3 Trigonal pyramidal
Identify the wrong match in the above-given pair.    
1. b 2. c
3. d 4.
Subtopic:  Hybridisation |
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The potential energy (y) curve for H2 formation as a function of internuclear distance (x) of the H atoms is shown below.

The bond energy of H2 is:

1. (b-a)

2. (c-a)2

3. (b-a)2

4. (c-a)

Subtopic:  Covalent Bond |
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How many (i) sp2 hybridised carbon atoms and (ii) π bonds are present in the following compound?

1. 7, 5

2. 8, 6

3. 7, 6

4. 8, 5

Subtopic:  Hybridisation |
 66%
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The number of hydrogen bonded water molecules(s) associated with CuSO4.5H2O is-

1. 3

2. 1

3. 2

4. 5

Subtopic:  van der Waal Force & Hydrogen Bonding |
 58%
From NCERT
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Which of the following is the correct order of dipole moment for the species given?

1. NH3<BF3<NF3<H2O

2. BF3<NF3<NH3<H2O

3. BF3<NH3<NF3<H2O

4. H2O<NF3<NH3<BF3

Subtopic:  Polarity |
 74%
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