Which of the following materials is soft?
- (A) Iron
- (B) Aluminum
- (C) Wood
- (D) Sponge
- (D) Sponge
Basic metals can be converted into gold by:
- (A) Heating
- (B) Beating
- (C) Artificial nuclear radioactivity
- (D) Chemical reaction
- (C) Artificial nuclear radioactivity
Which one of the following is an alloy?
- (A) Steel
- (B) Iron
- (C) Magnesium
- (D) Potassium
- (A) Steel
Metal are highly _______.
- (A) Electronegative
- (B) Electropositive
- (C) Both A and B
- (D) Neutral substance
- (B) Electropositive
Which of the following elements can displace copper from its compound?
- (A) Silver
- (B) Zinc
- (C) Gold
- (D) Mercury
- (B) Zinc
Tobacco smoke is injurious to health because it contains:
- (A) Nicotine
- (B) Carbon monoxide
- (C) Polycyclic aromatic hydrocarbons
- (D) Methane
- (B) Carbon monoxide
Which of the following is an essential element for life?
- (A) Salt
- (B) Carbon
- (C) Water
- (D) Shelter
- (C) Water
“Pigeon milk” is produced by:
- (A) Crop
- (B) Birds
- (C) Grass
- (D) Mammals
- (A) Crop
Which organ is known as blood bank of the human body?
- (A) Liver
- (B) Spleen
- (C) Brain
- (D) Heart
- (B) Spleen
Our bones and teeth are generally made up of:
- (A) Hydrolith
- (B) Chloropetite
- (C) Tri-calcium phosphate
- (D) Fluoropetite
- (C) Tri-calcium phosphate
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