1041: Which one of the following statements is correct?
(a) Liquid Sodium is employed as a coolant in nuclear reactors
(b) Calcium carbonate is an ingredient of toothpaste
(c) Bordeaux mixture consists of sodium sulphate and lime
(d) Zinc amalgams are used as a dental filling
1042: The term "Fourth Estate" refers to:
(a) A very backward State
(b) Judiciary
(c) Parliament
(d) Press
1043: Which of the following adds/add nitrogen to the soil?
1. Excretion of urea by animals
2. Burning of coal by man
3. Death of vegetation
Select the correct answer using the codes given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
1044: Which one of the following is used as an anti-freeze for the automobile engines?
(a) Propyl alcohol
(b) Ethanol
(c) Methanol
(d) Ethylene glycol
1045: Consider the following factors regarding an industry :
I. Capital investments
II. Business turnover
III. Labour force
IV. Power consumption.
Which of these determine the nature a size of the industry ?
(a) I, III and IV
(b) I, II and IV
(c) II, III and IV
(d) II and III