Digestion of fat in intestine is aided by _____.

1. 1. Peptization
   2. Protection
   3. Diffusion
   4. Emulsification

Madam Curie is famous for his work in the field of _____.

1. 1. Biochemistry
   2. Analytical chemistry
   3. Nuclear chemistry
   4. Organic chemistry

Who was the first to prepare sulphuric acid?

1. 1. Aristotle
   2. Bohr
   3. Dalton
   4. Jabir Bin Hayan

Dalton’s atomic theory gave the concept of _____.

1. 1. Valency
   2. Electrons
   3. Ionization
   4. Radioactivity

Which acid is present in sour milk?

1. 1. Tartaric acid
   2. Formic acid
   3. Lactic acid
   4. Citric acid

The common battery used in automobiles is _____.

1. 1. Iron storage batter
   2. Copper storage battery
   3. Lead storage battery
   4. Silver storage battery

Fog is an example of _____.

1. 1. Gas in gas
   2. Liquid in gas
   3. Gas in liquid
   4. Liquid in liquid

Smoke is a solution of _____.

1. 1. Solid in gas
   2. Solid in liquid
   3. Solid in solid
   4. Gas in gas

Which of the following gases is used in cigarette lighters?

1. 1. Butane
   2. Propane
   3. Radon
   4. Methane

Which of the following is used for silvering of mirrors?

1. 1. Pitchblende
   2. Zinc nitrate
   3. Silver oxide
   4. Silver nitrate