Student Corner

1. In which form the chemical compound RDX is used?

A. As an composition

B. As an reactor

C. As an explosive

D. As an nuclear weapon

Ans: C

2. As a vegetable preservative poly______ foam is used.

A. Uthane

B. Uriathenes

C. Urathanes

D. Urethanes

Ans: D

3. Chemistry is a branch of science which can be used for providing the services to mankind. Comment on the statement.

A. True

B. False

C. May Be

D. Strongly not

Ans: D

4. Bio-chemical compounds are used as....

A. Skin Treatments

B. Food preservatives

C. Cooking Oils

D. All of the above

Ans: D

5. Match the following:

Set I

a. Fertilisers

b. Nuclear Bomb

c. LPG   

d. Carbon

Set I

1. Constructive and destructive matter

2. Cooking Gas

3. Curse of chemical reactions

4. Advanced process

Code:

       a       b      c        d

A.    3     4     2      1

B.   1      2     3      4

C.   4      1     2      3

D.   2      3     4      1

6. Tell the composition of soap?

A. Sodium salt with fatty acids.

B. Potassium salt with fatty acids

C. Both a & b

D. Sodium and Potassium salt mixed with chemicals

Ans: C

7. Detergent is defined as.....

A. A liquid surfactant

B. A liquid soluble

C. A liquid sovent

D. A liquid solution

Ans: A

8. Which of the following compound is not used as an an alkali?

A. Sodium hydroxide

B. Potassium hydroxide

C. Carbon hydroxide

D. Nitrogen hydroxide

Ans: D

9. Define toxicity?

A. A chemical reaction

B. A process used in the manufacturing of detergents

C. A harmful effect of soaps and detergents required to measure the effectiveness.

D. A process used in the manufacturing of soaps

Ans: C

10.  Match the following:

Set I

a. A Fatty Acid

b. Potassium Hydroxide   

c. Non-ionic Surfactants

d. Neutralization

Set II

1. Better Alkali

2. Process to make detergent

3. Process to make soap   

4. Oil and fats

Code:

       a         b        c         d

A.    3      4     2        1

B.    1      2     3       4

C     4      1     2       3

D.    2      3     4       1

Ans:  C