Which metal is used in storage batteries?
- (A) Graphite
- (B) Lead
- (C) Cast Iron
- (D) Nickel
- (B) Lead
Which gas is used to kill bacteria in water?
- (A) Hydrogen
- (B) Nitrogen
- (C) Sulphur
- (D) Chlorine
- (D) Chlorine
What are the liquids that evaporate quickly, called?
- (A) Volatile
- (B) Viscous
- (C) Evaporative
- (D) Productive
- (A) Volatile
Molasses is the byproduct of _______ factory.
- (A) Fertilizer
- (B) Sugar
- (C) Cotton seed oil
- (D) Banaspati ghee
- (B) Sugar
Which gas is used in the preparation of fizzy soft drinks?
- (A) Oxygen
- (B) Carbon dioxide
- (C) Nitrogen
- (D) Halogens
- (B) Carbon dioxide
The thinning of Ozone layer is resulting due to chlorofluorocarbons which are used in:
- (A) Electric heaters and washing machines
- (B) Spray canes and refrigerators
- (C) Cigarette lighters and air conditioners
- (D) In making of Urea fertilizer
- (B) Spray canes and refrigerators
Which is used for pulp bleaching in the paper industry?
- (A) Iodine and water
- (B) Hydrogen peroxide
- (C) Milk sulphuric acid
- (D) Glucose isomerism
- (B) Hydrogen peroxide
Which is used to restore the color of old oil painting?
- (A) Ozone dioxide
- (B) Sodium peroxide
- (C) Barium peroxide
- (D) Hydrogen peroxide
- (D) Hydrogen peroxide
Mixing of two metals is called as:
- (A) Hard drive
- (B) Alloy
- (C) Amalgamation
- (D) Consolidation
- (B) Alloy
Stainlesssteel is mainly an alloy of:
- (A) Iron, Copper and Zinc
- (B) Red brass and Yellow brass
- (C) Iron, Zinc and Tin
- (D) Iron, Chromium and Nickel
- (D) Iron, Chromium and Nickel
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