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A. Gravitational pul
B. Rotation of the earth
C. Revolution of the earth
D. Uneven heating of the earth
Answer
Answer
A. Gravitational pul
Submitted by: Toheed Ahmed
Quantity of fresh air required for a man is
A. 1000 cubic feet of air for every 10 minutes
B. 1000 cubic feet of air for every 20 seconds
C. 1000 cubic feet of air for every 20 minutes
D. 1000 cubic feet of air for every 10 seconds
Answer
Answer
C. 1000 cubic feet of air for every 20 minutes
Submitted by: Toheed Ahmed
Where does the oxygen that keeps us alive come from?
A. Carbonates absorbed from soil
B. Carbon dioxide
C. Oxides of minerals
D. Water
Answer
Answer
B. Carbon dioxide
Submitted by: Toheed Ahmed
Which one of the following metals pollutes the air of a city having large number of automobiles?
A. Chromium
B. Cadmium
C. Lead
D. Copper
Answer
Answer
C. Lead
Submitted by: Toheed Ahmed
The snow on the mountains does not melt all at once when it is heated by the sun because
A. It becomes very hard
B. It reflects most of the heat from the sun
C. It has a low specific heat capacity
D. It has a high latent heat of fusion
Answer
Answer
B. It reflects most of the heat from the sun
Submitted by: Toheed Ahmed
Where is blood formed in the human body?
A. Heart
B. Spleen
C. Liver
D. Bone marrow
Answer
Answer
D. Bone marrow
Submitted by: Toheed Ahmed
Which of the following is the name of the smallest part of the matter discovered by the scientists?
A. Quark
B. Proton
C. Neutron
D. Positron
Answer
Answer
A. Quark
Submitted by: Toheed Ahmed
Trachoma is a disease of the _________?
A. Eye
B. Brain
C. Larynx
D. Ear
Answer
Answer
A. Eye
Submitted by: Toheed Ahmed
Sodium depletion occurs in excessive sweating, and cannot be corrected by drinking water alone. When uncorrected, it may lead to
A. Renal failure
B. Increase of urea in blood
C. Swelling of ankles and feet
D. Muscle cramps, loss of energy, fatigue and faintness
Answer
Answer
D. Muscle cramps, loss of energy, fatigue and faintness
Submitted by: Toheed Ahmed
The heart of a normal adult human being weighs about
A. 300 grams
B. 500 grams
C. 200 grams
D. 400 grams
Answer
Answer
A. 300 grams
Submitted by: Toheed Ahmed