What is the partial pressure of toluene in the vapour phase during its steam distillation?

1.	Equal to the pressure of the barometer.
2.	Less than the pressure of the barometer.
3.	Equal to vapour pressure of toluene in simple distillation.
4.	More than the vapour pressure of toluene in simple distillation.

IUPAC name of the compound given below is:

Pairs of compounds among the following is a pair of enantiomers:

1.
2.
3.
4.

The correct order of reactivity towards the electrophilic substitution of the compounds aniline (I), benzene (II), and nitrobenzene (III) is:

1. III > II > I

2. II > III > I

3. I < II > III

4. I > II > III

Which of the following orders of acid strength is correct:

1. RCOOH > ROH > HOH > HC ≡ CH

2. RCOOH > HOH > ROH > HC ≡ CH

3. RCOOH > HOH > HC ≡ CH > ROH

4. RCOOH > HC ≡ CH > HOH > ROH

The correct IUPAC name, among the following, is:

Which of the following statements is correct?

An organic liquid vaporises at a temperature___________ its boiling point in steam distillation.

1. Above

2. Below

3. Equal to

4. None of the above

An organic compound contains 69% carbon, and 4.8% hydrogen, the remainder being oxygen. The masses of carbon dioxide, and water produced when 0.20 g of this substance is subjected to complete combustion would be respectively -

1. 0.506 g, 0.0864 g

2. 0.906 g, 0.0864 g

3. 0.0506 g, 0.864 g

4. 0.0864 g, 0.506 g

A sample of 0.50 g of an organic compound was treated according to Kjeldahl’s method. The ammonia evolved was absorbed in 50 mL of 0.5 M ${\mathrm{H}}_2{\mathrm{SO}}_4$. The residual acid required 60 mL of 0.5 M solution of NaOH for neutralization. The percentage composition of nitrogen in the compound is: