Question

12.
is called a universal solvent.
(A) Water
(B) Alcohol
(C) Petrol
(D) Ether
13.
Water is often treated with chlorine to:
(A) make it sweet
(B) make it salty
(C) kill germs in it (D) make it colour
14.
The chemical formula of ice is:
(A) H,
(B) O,
Water, ice and steam are all:
(C) H,0
(D) HO,
75.
(B) mixtures
(D) elements
(C) compounds
(D) none of these
16.
Water in its pure form is a:
(A)good conductor of heat
(B) bad conductor of heat
(D) none of these
(C)good conductor of electricity
Water is made of two elements, which are:
(B) both liquids
(A) both solids
(D) one liquid and the other a gas
(C) both gases
For rusting of iron to take place. are required.
(A) O, and Co, (B) H,0 and N, (C) H0 and 0,
(D) H0 and H,
19.
The water table of a place.
20.
(A) changes from time to time
(B) changes from palce to place
(C) goes down when rains are less
(D) all of these
Which of the following is the most important factor in balancing the amount of fresh water
on earth?
(A) water cycle
(B) greenhouse effect
(C) WWTP
(D) transpiration
21.
22.
Which property of water is used while washing clothes?
(A) odour
(B) colour
(C) solubility (D) none of these
Which of the following is NOT soluble in water?
(A) salt
(B) sugar
(C) oxygen (D) none of these
By burning which of the following elements would you get water?
(A) Hydrogen
(B) Oxygen
C) Carbon
(D) Nitrogen
23.​

Answer 1

Answer:

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