Total number of elements are known till now:
- (A) 102
- (B) 109
- (C) 118
- (D) 126
- (C) 118
Which one of the following is the hardest coal?
- (A) Peat
- (B) Lignite
- (C) Bituminous
- (D) Anthracite
- (D) Anthracite
The color of chlorine gas is:
- (A) Orange
- (B) Purple
- (C) Green
- (D) Yellow
- (C) Green
The ability of carbon atoms to form chains is called:
- (A) Isomerism
- (B) Catenation
- (C) Resonance
- (D) Condensation
- (B) Catenation
Which among the following is in liquid state at normal room temperature?
- (A) Mercury
- (B) Sodium
- (C) Phosphorus
- (D) Potassium
- (A) Mercury
Which among the following is a gas?
- (A) Thorium
- (B) Plutonium
- (C) Mercury
- (D) Chlorine
- (D) Chlorine
Marsh gas mostly consists of:
- (A) Butane
- (B) Ethane
- (C) Methane
- (D) Propane
- (C) Methane
Cooking gas is a mixture of which of the following two gases?
- (A) Butane and Propane
- (B) Methane and Ethane
- (C) Oxygen and Butane
- (D) Oxygen and Methane
- (A) Butane and Propane
The material used for bleaching paper pulp is:
- (A) Lime
- (B) Sodium
- (C) Caustic soda
- (D) Alum
- (B) Sodium
Liquefied Petroleum Gas (LPG) consists of:
- (A) Ethane and Methane
- (B) Ethane and Propane
- (C) Hexane and Nonane
- (D) Butane and Propane
- (D) Butane and Propane
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