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A. Oxygen
B. Helium
C. Hydrogen
D. Nitrogen
Answer
Answer
C. Hydrogen
Submitted by: Toheed Ahmed
Tooth decay is caused by ________?
A. Salt
B. Calcium
C. Formalin
D. Sugar
Answer
Answer
D. Sugar
Submitted by: Toheed Ahmed
Which of the following is an alloy?
A. Bronze
B. Zinc
C. Gold
D. Tin
Answer
Answer
A. Bronze
Submitted by: Toheed Ahmed
The outermost layer of skin is known as __________?
A. Ligament
B. Epidermis
C. Epiglottis
D. Cartilage
Answer
Answer
B. Epidermis
Submitted by: Toheed Ahmed
As we climb up the mountain, the atmospheric pressure will
A. Depend upon the weather
B. Remain the same
C. Decrease
D. Increase
Answer
Answer
C. Decrease
Submitted by: Toheed Ahmed
Which of the following will you use to remove rust stains on cloth?
A. Alcohol
B. Lime
C. Oxalic Acid solution
D. Kerosene oil
Answer
Answer
C. Oxalic Acid solution
Submitted by: Toheed Ahmed
The acid commonly present in lemon and grapefruit is
A. Citric acid
B. Ascorbic acid
C. Tartaric acid
D. Tartaric acid
Answer
Answer
A. Citric acid
Submitted by: Toheed Ahmed
The chemical name of laughing gas is
A. Nitrogen dioxide
B. Nitric oxide
C. Nitrogen pentoxide
D. Nitrous oxide
Answer
Answer
D. Nitrous oxide
Submitted by: Toheed Ahmed
Which of the following is the lightest substance known?
A. Oxygen
B. Hydrogen
C. Carbon
D. Nitrogen
Answer
Answer
B. Hydrogen
Submitted by: Toheed Ahmed
Wood is the main raw material for the manufacture of
A. Paper
B. Gun powder
C. Paint
D. Ink
Answer
Answer
A. Paper
Submitted by: Toheed Ahmed