An element X is placed in group IA of the periodic table because it forms:

1. An oxide which is acid

2. A volatile chloride having formula XCl2

3. An ionic chloride having formula XCl

4. An insoluble chloride XCl4

Subtopic:  Ionic Bond |
 75%
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Which of the following would have a permanent dipole moment ?

1. BF3

2. SiF4

3. SF4

4. XeF4

Subtopic:  Polarity |
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In the case of alkali metals, the covalent character decreases in the order

1. MCl > MI > MBr > MF

2. MF > MCl >  MBr > M

3. MF > MCl > MI > MBr

4. MI > MBr > MCl > MF

Subtopic:  Polarity |
 61%
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Which of the following two are isostructural? 

1. XeF2, and IF2-

2. NH3, and BF3

3. CO2, and SiO2

4. PCl5, and IF5

Subtopic:  Types of Chemical Bond |
 58%
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Which one of the following species does not exist?

1. Be2+

2. Be2

3. B2

4. N2

 

Subtopic:  M.O.T |
 61%
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In a regular octahedral molecule MX6, the number of X-M-X bonds at 180° is-

1. 3

2. 2

3. 6

4. 4

Subtopic:  Hybridisation |
 61%
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The correct order of increasing bond angles in the following species is

1. Cl2O < ClO2ClO2-

2. ClO2 < Cl2O < ClO2-

3. Cl2O < ClO2- < ClO2  

4. ClO2- < ClO2 < Cl2

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In which of the following species the central atom has the type of hybridisation which is not the same as that present in the other three ?

1. SF4

2. I3-

3. SbCl52-

4. PCl5

Subtopic:  Hybridisation |
 58%
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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.

Subtopic:  Hybridisation |
 52%
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In which of the following pairs, the two species are isostructural?

1. SF4 and XeF4

2. SO32- and NO3-

3. BF3 NF3

4. BrO3- and XeO3

Subtopic:  Hybridisation |
 68%
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