Practice paper · Annual

1 mole of liquid A and 2 moles of liquid B make a solution having a total vapour pressure 40 torr. The vapour pressure of pure A and pure B are 45 torr and 30 torr respectively. The above solution

1. Ais an ideal solution.
2. Bshows positive deviation.
3. Cshows negative deviation.
4. Dis a maximum boiling azeotrope.

Standard electrode potential for Sn⁴⁺/Sn²⁺ couple is +0.15 V and that for the Cr³⁺/Cr couple is —0.74 V. The two couples in their standard states are connected to make a cell. The cell potential will be

1. A+1.19 V
2. B+0.89 V
3. C+0.18 V
4. D+1.83 V

Out of Fe²⁺, Co²⁺, Cr³⁺, Ni²⁺, the one which shows lowest magnetic moment is :

1. AFe²⁺
2. BCo²⁺
3. CCr³⁺
4. DNi²⁺

Auto-oxidation of chloroform in air and light produces a poisonous gas known as

1. APhosphine gas
2. BMustard gas
3. CPhosgene gas
4. DTear gas

The correct IUPAC name of (CH₃)₃ C – CH₂Br is :

1. A2,2-Dimethyl-2-bromopropane
2. B1-Bromo-2,2,2-trimethylethane
3. C2-Bromo-1,1,1-trimethylethane
4. D1-Bromo-2,2-dimethylpropane

Williamson’s synthesis of preparing dimethyl ether is a/an

1. Aelectrophilic substitution
2. BSN1 reaction
3. Celectrophilic addition
4. DSN2 reaction

Which of the following alcohols will not undergo oxidation ?

1. AButanol
2. BButan-2-ol
3. C2-Methylbutan-2-ol
4. D3-Methylbutan-2-ol

Which of the following does not undergo Aldol condensation ?

1. AHCHO
2. BCH₃CH₂CHO
3. CCH₃COCH₃
4. DCH₃CHO