Which of the following interaction lies in the range of 8 - 42 kJ/mol?

1. H2...H2O                               

2. HCl...HCI

3. H2O...HF                                 

4. all

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
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The number of antibonding electrons pairs in O22- on the basis of MO theory are:

(1) 4

(2) 3

(3) 2

(4) 5

 

Subtopic:  M.O.T |
 73%
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If CdI2 is pink in colour, the CdCl2 will be '.............' coloured.

(1) yellow         

(2) red                 

(3) blue                   

(4) cannot be predicted

Subtopic:  Types of Chemical Bond |
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Which are true statements among the following?

(1) PH5 and BiCl5 does not exist 

(2) pπ-dπ bonds are present in SO2 

(3) Electrons travel with speed of light 

(4) SeF4 and CH4 has same charge on central atom

(5) I3+ has bent geometry 

(a) 1,3 

(b) 1,2,5 

(c) 1,3,5

(d) 1,2,4 

Subtopic:  Hybridisation |
 62%
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In which molecule all atoms are coplanar?

1. CH4

2. BF3

3. PF3

4. NH3

Subtopic:  Hybridisation |
 79%
From NCERT
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Among the following Which is paramagnetic ?

1. Cl2O6

2. Cl2O7

3. Cl2O

4. ClO2

Subtopic:  Covalent Bond |
 66%
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The correct statement among the following for a compound having a higher dipole moment is-

1. Greater will the ionic nature. 2. Lesser will be the polarity.
3. Smaller will be the ionic nature. 4. None of the above.

 
Subtopic:  Polarity |
 79%
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NF3 is:

(1) non-polar compound 

(2) electrovalent compound 

(3) having low value of dipole moment than NH3

(4) having more dipole moment than NH3

Subtopic:  Polarity |
 81%
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Polarization of electrons in acrolein may be written as: 

(a) Cδ-H2=CH-Cδ+H=O

(b)Cδ-H2=CH-CH=Oδ+

(c) Cδ-H2=Cδ+H-CH=O

(d) Cδ+H2=CH-CH=Oδ-

Subtopic:  Resonance & Nature of Compounds |
 76%
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PCl5 exists but NCl5 does not because:

1. Nitrogen has no vacant d-subshells .

2. NCl5 is unstable .

3. Nitrogen atom is much smaller than p .

4. Nitrogen is highly inert . 

Subtopic:  Acidic, Basic Character & Fajan's Rule |
 87%
From NCERT
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