Question

Multiple choice questions:

(1) The process of loosening and upturning of soil is called ____________.

(a) Threshing (b) Ploughing

(c) Levelling (d) Manuring

(2) The most reactive metal among the following is:

(a) Zinc (b) Iron

(c) Magnesium (d) Sodium

(3) The purest form of coal is

(a) Peat (b) Bituminous

(c) Anthracite (d) Liginite

(4) The process leading to the fusion of the gametes in plants and animals is called

(a) Growth (b) Fertilisation

(c) Development (d) Fusion

(5) Number of chromosomes in a human cell is

(a) 23 pairs (b) 21 pairs

(c) 30 pairs (d) 20 pairs

(6) The S.I unit of Pressure is

(a) Atmosphere (b) Pascal

(c) cm of mercury (d) mm of mercury

(7) Force of friction is directly proportional to

(a) Size (b) Weight

(c) Area (d) All of the above

(8) The rearing of honey bees on a large scale is called

(a) Pisciculture (b) Dairying

(c) Apiculture (d) Poultry farming​

Answer 1

Explanation:

1 b) ploughing

2 d) Sodium

3 c) Anthracite

4 b) fertilization

5 a) 23 pairs

6 b) Pascal

7 d) all of these but I don't know perfect answer of this question

8 c) apiculture