All India Engineering / Architecture Entrance Examination (AIEEE)
CBSE Guess > AIEEE > AIEEE Papers > 2010 > Chemistry
AIEEE 2010 Chemistry
Q. 19. Three reactions involving 
are given below:
(i) 
(ii) 
(iii) 
In which of the above does act as an acid?
- (ii) only
- (i) and (ii)
- (iii) only
- (i) only
Sol :
Only in (ii) reaction 
is giving a proton, so it is acting as an acid.
Answer: (1)
Q. 20. On mixing, heptane and octane form an ideal solution. At 373 K, the vapour pressures of the two liquid components (heptane and octane) are 105 kPa and 45 kPa respectively. Vapour pressure of the solution obtained by mixing 25.0 g of heptane and 35 g of octane will be (molar mass of heptane = 100 g mol- 1 and of octane = 114 g mol- 1)
- 72.0 kPa
- 36.1 kPa
- 96.2 kPa
- 144.5 kPa
Sol :
Answer: (1)
