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Read the passage given below and answer the following questions: An ideal solution may be defined as the solution which obeys Raoult's law exactly over the entire range of concentration. The solutions for which vapour pressure is either higher or lower than that predicted by Raoult's law are called non-ideal solutions.Non-ideal solutions can show either positive or negative deviations from Raoult's law depending on whether the A-B interactions in solution are stronger or weaker than A - A and B - B interactions. The following questions are multiple choice questions. Choose the most appropriate answer:

1. Which of the following solutions is/are ideal solution(s)?

1. Bromoethane and iodoethane.
2. Acetone and chloroform
3. Benzene and acetone
4. n-heptane and n-hexane

1. Only I
2. I and II
3. II and III
4. I and Iv

2. For which of the following solutions $\Delta\text{H}_{\text{mix}}$ and $\Delta\text{V}_{\text{mix}}$ is negative?

1. Acetone and aniline
2. Ethyl alcohol and cyclohexane
3. Acetone and CS2
4. Benzene and toluene

3. Which of the following is not true for positive deviations?

1. The A-B interactions in solution are weaker than the A - A and B - B interactions.
2. $\text{P}_\text{A}<\text{P}\mathring{\text{A}}\ \text{x}_\text{A}$ and $\text{P}_\text{B}<\text{P}\mathring{\text{B}}\ \text{x}_\text{B}$
3. Carbon tetrachloride and chloroform mixture is an example of positive deviations.
4. All of these.

4. For water and nitric acid mixture, which of the given graph is correct?

 

1.  

 

2.  

1. Both of these
2. None of these

5. Water-HCI mixture.

1. Shows positive deviations.
2. Forms minimum boiling azeotrope.
3. Shows negative deviations.
4. Forms maximum boiling azeotrope.

1. I and II
2. I and III
3. I and IV
4. III and IV