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

Which of the following is fire resistant?

1. 1. Asbestos
   2. Dolomite
   3. Gypsum
   4. None of the above

Liquefied Petroleum Gas (LPG) consists of _____.

1. 1. Ethane and hexane
   2. Butane and propane
   3. Ethane and nonane
   4. None of the above