PU Entry Test Past Papers

A single chloride free radical can destroy how many ozone molecules.

1. 100
2. 100000
3. 10000
4. 10

The following is used in making fire proof clothes?

1. water glass
2. borax glass
3. kaolin
4. asbestos

Which one of the following elements occur free in nature:

1. Sb
2. As
3. N
4. P

Which type of reactions are given by alkanes.

1. addition
2. substitution
3. elimination
4. polymerization

Alkanoic acid is another name of:

1. aldehyde
2. ketones
3. carboxylic acid
4. alcohols

Acetamide is prepared by?

1. heating ammonium acetate
2. heating methyl cyanide
3. heating ethyl acetate
4. heating ammonia

Which of the following is not a nucleophile?

1. H2O
2. H2S
3. NH2
4. BF3

Which of the following compounds is acetophenone?

1. C6H5COCH3
2. C6H5COC6H5
3. CH3COCH3
4. C6H5CH)

The hydrolysis of fats is brought about by:

1. lipase
2. maltase
3. zymase
4. urease

Every real number is a complex number with its imaginary part equal to?

1. 0
2. 1
3. i
4. -1