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A. Increases
B. Decreases
C. Remains unchanged
D. None of these
Answer
Answer
A. Increases
Submitted by: Toheed Ahmed
The most abundant element in Earth’s crust is __________?
A. Silicon
B. Oxygen
C. Aluminium
D. Calcium
Answer
Answer
B. Oxygen
Submitted by: Toheed Ahmed
What is the instrument that determines specific gravity of liquids?
A. Hygrometer
B. Hydrometer
C. Gravimeter
D. Hypsometer
Answer
Answer
C. Gravimeter
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Convex lenses are used for the correction of
A. Long-sightedness
B. Short-sightedness
C. Cataract
D. None of these
Answer
Answer
A. Long-sightedness
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A transformer is used to _________?
A. Increase DC voltage
B. Increase or decrease AC voltage
C. Decrease DC voltage
D. Convert DC into AC
Answer
Answer
B. Increase or decrease AC voltage
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Astronauts cannot talk to each other on the surface of the moon because _________?
A. Sound waves are absorbed
B. There are obstructions to the sound waves
C. Sound waves cannot travel through vaccum
D. The temperature is high near the moon’s surface
Answer
Answer
C. Sound waves cannot travel through vaccum
Submitted by: Toheed Ahmed
Brass is an alloy of __________?
A. Copper and Tin
B. Copper and Zinc
C. Copper and Nickel
D. Aluminium and Magnesium
Answer
Answer
B. Copper and Zinc
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Vinegar is prepared by the
A. Fuming of date palms
B. Fermentation of rotten grapes
C. Fermentation of apple cider in the presence of air
D. Dehydration of wine
Answer
Answer
B. Fermentation of rotten grapes
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The longest and the strongest bone in the human body is
A. Tibia
B. Pelvis
C. Femur
D. Jaw
Answer
Answer
C. Femur
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Recently, a group of scientists successfully cloned eight calves from the cells of a single cow. The experiment took place in
A. Britain
B. USA
C. Switzerland
D. Japan
Answer
Answer
A. Britain
Submitted by: Toheed Ahmed