The incorrect statement among the following is -

1.	Density decreases in case of crystals with Schottky's defect.
2.	NaCl(s) is insulator, silicon is semiconductor, silver is conductor, quartz is piezo electric crystal.
3.	Frenkel defect is favoured in those ionic compounds in which sizes of cations and anions have large difference.
4.	\(Fe_{0.98}O\) has non stoichiometric metal excess defect.

Which of the following species has a bond angle of \(120^\circ\)?
1. \(\mathrm{{SF}_6}\)
2. \(\mathrm{NCl_3}\)
3. \(\mathrm{BCl_3}\)
4. \(\mathrm{PH_3}\)

For a given reaction, ∆H = 35.5 kJ mol^–1 and ∆S = 83.6 J K^–1 mol^–1. The reaction is spontaneous at:
(Assume that ∆H and ∆S  do not vary with temperature)
1. T > 425K
2. All temperatures
3. T > 298K
4. T < 425K

In humans, the main oxygen carrier in the blood is -

1. Hemocyanin

2. Proteins

3. Haemoglobin

4. Both microorganisms and haemoglobin.

If the molality of the dilute solution is doubled, the value of molal depression constant (K_f) will be-
1. Halved
2. Tripled
3. Unchanged
4. Doubled

Which of the following is dependent on temperature?

The incorrect statement among the following is:

Identify A and predict the type of reaction
    

1.
2.
3.
4.

The correct order of the stoichiometries of AgCl formed when AgNO₃ in excess is treated with the complexes
CoCl₃.6NH₃, CoCl₃.5NH₃, CoCl₃.4NH₃ respectively is:

1. 3AgCl, 1AgCl, 2AgCl

2. 3AgCl, 2AgCl, 1AgCl

3. 2AgCl, 3AgCl, 1AgCl

4. 1AgCl, 3AgCl, 2AgCl

The correct statement regarding electrophile is :