BF3 is a planar and an electron deficient compound. Hybridization and number of electrons around the central atom, respectively are:

1. sp2 and 6

2. sp2 and 8

3. sp3 and 4

4. sp3 and 6

Subtopic:  Hybridisation |
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Match List - I with List - II

List - I List - II
(a) PCl5 (i) Square pyramidal
(b) SF6 (ii) Trigonal planar
(c) BrF5 (iii) Octahedral
(d) BF3 (iv) Trigonal bipyramidal

Choose the correct answer from the options given below

(a) (b) (c) (d)
1. (iii) (i) (iv) (ii)
2. (iv) (iii) (ii) (i)
3. (iv) (iii) (i) (ii)
4. (ii) (iii) (iv) (i)
Subtopic:  V.S.E.P.R / V.B.T |
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From the following pairs of ions which one is not an iso-electronic pair?

1. Mn2+, Fe3+

2. Fe2+, Mn2+

3. O2-, F-

4. Na+, Mg2+

Subtopic:  Octate,Isoelectronic Species ,Lewis Structure & Formal Charge |
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The non-polar molecule among the following is-

1. SbCl5

2. NO2

3. POCl3

4. CH2O

Subtopic:  Polarity |
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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 |
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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 |
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A molecule that can not exist is-

1. Li2

2. C2

3. O2

4. He2

Subtopic:  M.O.T |
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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 |
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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 |
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Identify the wrongly matched pair.                                                     

Molecule Shape or geometry of the molecule
a. PCl5 Trigonal 
b. SF6 Octahedral
c. BeCl2 Linear
d. NH3 Trigonal pyramidal

1. b
2. c
3. d
4. a 
Subtopic:  Hybridisation |
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