Ordinary table salt is sodium chloride. What is baking soda?
A. Potassium chloride
B. Potassium carbonate
C. Potassium hydroxide
D. Sodium bicarbonate
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Water is a good solvent of ionic salts because
A. It has a high boiling point
B. It has a high dipole moment
C. It has a high specific heat
D. It has no colour
Which of the following chemicals is useful in photography?
A. Aluminium hydroxide
B. Potassium nitrate
C. Silver bromide
D. Sodium chloride
Lime is sometimes applied to soil in order to
A. Increase the alkalinity of the soil
Increase the acidity of the soil
B. Restore nitrates to the soil
C. Make the soil more porous
D. None
The mineral containing both magnesium and calcium is
A. Magnesite
B. Calcite
C. Carnallite
D. Dolomite
The heat required to raise the temperature of body by 1K is called
A. Specific heat
B. Thermal capacity
C. Water equivalent
D. None of the above Answer
The Latin word ‘Formica’ means ant. The name formic acid is derived from this Latin word because
A. This acid, in ancient times, was used to eliminate ant-hills
B. This corrosive acid is secreted by ants to drive away their enemies
C. This acid was first obtained by the distillation of ants
D. Ants are attracted by the odour of this acid