Select the correct order of solubility (in water) from the following:

1. SrSO4 < CaSO4 < MgSO4 < BeSO4

2. NaF < KF < RbF < CsF

3. Ba(OH)2 > Sr(OH)2 > Ca(OH)2 > Mg(OH)2

4 All of the above

Subtopic:  Lattice & Hydration Energy |
 66%
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Which of the following molecules exhibits H-bonding?

1. CH4 2. H2Se
3. N2H4 4. H2S
Subtopic:  van der Waal Force & Hydrogen Bonding |
 71%
From NCERT
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Compound that is isoelectronic with an adduct of "Diborane and Ammonia" is-

1. Hydrogen peroxide.

2. Diborane (at absolute zero temp.).

3. First member of alkyne series.

4. Diborane (at 10°C temp).

Subtopic:  Octate, Isoelectronic Species, Lewis Structure & Formal Charge |
From NCERT
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Which of the following leads to bonding orbital?

1. 2.
3. 4.


 

Subtopic:  Hybridisation |
 63%
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Which of the following pairs share both isoelectronicity and isostructural characteristics?

NO3-, CO3-2, ClO3-, SO3

1. NO3-, CO3-2

2. SO3, NO3-

3. ClO3-, CO3-2

4. CO3-2, ClO3-

Subtopic:  Types of Chemical Bond |
 73%
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Which of the following has largest bond angle.

1. H2O

2. F2O

3. Cl2O

4. H2S

Subtopic:  M.O.T |
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In the molecular orbital diagram for O2+ ion. the HOMO is :-

(1) σ MO orbital

(2) π MO orbital

(3)  π* MO orbital

(4) σ* MO orbital

Subtopic:  M.O.T |
 70%
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The correct order of H-bond strength in the following compounds is:

1. H2O > H2O2 > HF > H2S

2. HF >  H2O2 > H2O > H2S

3. HF > H2O > H2S > H2O2

4. HF > H2O > H2O2 > H2S

Subtopic:  van der Waal Force & Hydrogen Bonding |
From NCERT
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 A pair of species that have identical shapes is : 

1. NO2+ and NO2-

2. PCl5 and BrF5

3. XeF4 and ICI4-

4. TeCl4 and XeO4

Subtopic:  Hybridisation |
 82%
From NCERT
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Which of the following is correct :-

(1) Extent of hydration is PCl5 > SiCl4 and BCl3 < CCl4

(2) K+ ion will be more Hydrated than Li+

(3) In BCl3 there are no vacant d-orbitals but still it can undergo expansion

(4) None

Subtopic:  Lattice & Hydration Energy |
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