The most acidic compound among the following is:

1.		2.
3.		4.

If for a certain reaction ${∆}_{r}H$ is 30 kJ mol^–1 at 450 K, the value of ${∆}_{r}S$ (in JK^–1 mol^–1) for which the same reaction will be spontaneous at the same temperature is:

What is the molarity of the standard solution if the solubility product for a salt of type AB is $4\times {10}^{-8}$?

1. $2\times {10}^{-4}$ $\mathrm{mol}/\mathrm{L}$

2. $16\times {10}^{-16}$ $\mathrm{mol}/\mathrm{L}$

3. $2\times {10}^{-16}$ $\mathrm{mol}/\mathrm{L}$

4. $4\times {10}^{-4}$ $\mathrm{mol}/\mathrm{L}$

The most reactive compound among the following for electrophilic aromatic substitution is:

1.		2.
3.		4.

Identify the incorrect statement from the following:

Which of the following statement is not true about glucose?

1. It is an aldohexose.

2. It contains five hydroxyl groups.

3. It is a reducing sugar.

4. It is an aldopentose.

An acid that forms an anhydride (X) on heating and an acid imide (Y) on strong heating with ammonia is:

1.		2.
3.		4.

The reactant 'A' in the below-mentioned reaction is:
 

Which of the following is a free radical substitution reaction?

1. Benzene with Br₂/AlCl₃

2. Acetylene with HBr

3. Methane with Br₂/hv

4. Propene with HBr/(C₆H₅COO)₂