Question

1. Which one of the following is not a plantation crop?
(A) Tea
(B) Coffee
(C) Rice
(D) Rubber
2. Which one of the following represents the bacterial disease?
(A) Common cold, typhoid, malaria, cholera
(B) Cholera, typhoid, tuberculosis, anthrax
(C) Chicken pox, tuberculosis, cholera, typhoid
(D) Cholera, measles, anthrax, typhoid
4. Deficiency of phosphorus in plants
(A) Retards protein formation (B) Brings about healthy root growth
(C) Promote fruit ripening
(D) None

5. Which of the following are significant in maintaining the heat budget of the earth
(A) Nitrogen and oxygen
(B) Ozone and helium
(C) Water vapour
(D) Water vapour and Carbon dioxide
7. If safe storage is to be ensured, the moisture content of food grains at the time of harvesting should not be higher than
(A) 14%
(B) 16%
(C) 18%
(D) 20%
8. Crop rotation is performed to
(A) Improve the soil fertility (B) Save nitrogenous fertilizer (C) Help in weed control and pest control
(D) All of these
10 Bacteria are used in experiments to study the effect of changing temperature on the growth of microbes instead of viruses because (A) Viruses cannot reproduce outside a host
(B) Bacteria reproduce faster than viruses
(C) Viruses do not have cell walls
(D) Bacteria are larger than viruses
11. For which of the following purpose is a coating of melamine plastic used?
(A) Strong & Flexible
(B) Good conductor of heat (C) Remoulade
(D) Fire proofing
​

Answer 1

Answer:

b) AIDS. (c) Typhoid. (d) Influenza. 2. Which one of the following is not a bacterial disease? (a) Cholera. (b) Tuberculosis. (c) Anthrax.