1971: Which one of the following colloidal systems is represented by fog?

(a) Liquid in gas

(b) Gas in liquid

(c) Solid in gas

(d) Liquid in liquid
1972: Consider the following statements :

The functions of commercial banks in India include

1. Purchase and sale of shares and securities on behalf of customers.

2. Acting as executors and trustees of wills.

Which of the statements given' above is/are correct ?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
1973: What could be the main reasons for the formation of African and Eurasian desert belt ?

1. It is located in the sub-tropical high pressure cells.

2. It is under the influence of warm ocean currents.

Which of the statements given above is/are correct in this context?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
1974: MERCOSUR consists of group of countries of

(a) Africa

(b) Asia

(c) Latin America

(d) South East Asia
1975: Mulching the soil is a process whereby:

(a) Big pieces of soil are broken down into smaller pieces

(b) The field is irrigated at regular intervals

(c) Transplanting of seedlings take place

(d) Loose material, dung, etc. are laid on the ground to prevent excessive evaporation or erosion of the soil