Assertion (A):	CCl4 doesn't give precipitate of AgCl on heating with AgNO3.
Reason (R):	CCl4 is a non-polar molecule.

 

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	Both (A) and (R) are False.

0.1688 g organic compound when analyzed by the Dumas method yields 31.7 mL of moist nitrogen measured at 14º C and 758 mm mercury pressure. The % of the nitrogen in the organic compound (Aqueous tension at 14 º C =12 mm) is:

1. 30.9%

2. 10%

3. 40%

4. 21.9 %

0.6 g of an organic compound was Kjeldahlised and NH₃ evolved was absorbed into 50 mL of semi-normal solution of H₂SO₄. The residual acid solution was diluted with distilled water and the volume made up to 150 mL. 20 mL of this diluted solution required 35 mL of N/20 NaOH solution for complete neutralization.

1. 24.2% 

2. 32.4%

3.27.6 %

4. 20.8%

In the Lassaigne’s test for nitrogen in an organic compound, the Prussian blue colour is obtained due to the formation of:

$1.<mspace\; width="1em"></mspace>{\mathrm{Na}}_4\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6\right]<mspace\; width="1em"></mspace>$
$2.<mspace\; width="1em"></mspace>{\mathrm{Fe}}_4[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6{]}_3$
$3.<mspace\; width="1em"></mspace>{\mathrm{Fe}}_2\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6\right]<mspace\; width="1em"></mspace>$
$4.<mspace\; width="1em"></mspace>{\mathrm{Fe}}_3[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6{]}_4$

The latest technique for isolation, purification and separation of organic compounds is -

IUPAC name of the given compound is :

1. 3-Phenylpropane

2. Phenyl-1-butane

3. 2-Benzylethane

4. Propyl benzene

The method that can be used to separate two compounds with different solubilities in a solvent is-
1. Distillation
2. Isolation
3. Fractional crystallization
4. Filtration

Which purification method is suitable for a liquid that decomposes upon boiling?

1. Fractional distillation  
2. Steam distillation
3. Simple distillation 
4. Distillation under reduced pressure

Lassaigne's test can detect:

1. Nitrogen, Sulphur, Halogens

2. Nitrogen, Cyanides, Sulphur

3. Sodium, Sulphur, Halogens, Phosphorus

4. Nitrogen, Sulphur, Halogens, Phosphorus