Which of the following does not contain carbon?
- (A) Sugar
- (B) Sand
- (C) Marble
- (D) Petroleum
- (B) Sand
Liquefied Natural Gas (LNG) refers to:
- (A) Motor fuel
- (B) A source of energy
- (C) Shipping gas
- (D) Substitute of petrol
- (B) A source of energy
The degree of dissociation of an electrolyte depends on:
- (A) Dilution
- (B) Impurities
- (C) Atmospheric pressure
- (D) Method of dissolution
- (A) Dilution
Which is not a trace element required by the human body?
- (A) Iodine
- (B) Calcium
- (C) Nickel
- (D) Vanadium
- (B) Calcium
Which is the actual chemical name of ‘Vinegar’?
- (A) Oxalic acid
- (B) Acetic acid
- (C) Citric acid
- (D) Boric acid
- (B) Acetic acid
Mercury is used as a solvent in refining:
- (A) Gold
- (B) Aluminum
- (C) Silver
- (D) Platinum
- (C) Silver
In the electroplating of gold, the electrolyte used is:
- (A) Gold chloride
- (B) Gold nitrate
- (C) Gold sulfate
- (D) Potassium cyanide
- (C) Gold sulfate
Mineral waxes are rich in:
- (A) Polyethene
- (B) Carbohydrates
- (C) Hydrocarbons
- (D) Poly alcohols
- (C) Hydrocarbons
Uranium is naturally occurring radioactive element which emits alpha particles and is converted into:
- (A) Radium
- (B) Thorium
- (C) Actinium
- (D) Plutonium
- (B) Thorium
What is the atomic number of uranium?
- (A) 226
- (B) 237
- (C) 238
- (D) 241
- (C) 238
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