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A. Have its shape changed
B. Remain unaffected
C. Increase
D. Decrease
Answer
Answer
D. Decrease
Submitted by: Toheed Ahmed
John Walker invented __________?
A. Safety razor
B. Safety pin
C. Safety match
D. Safety valve
Answer
Answer
C. Safety match
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The instrument, used for recording tremors of earth, is known as
A. Seismograph
B. Lactometer
C. Hydrometer
D. Crescograph
Answer
Answer
A. Seismograph
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A chair is tilted about two of its legs and then left. It would return to its original position if
A. Its centre of gravity falls within the base
B. Its centre of gravity falls outside the base
C. It is tilted through an angle of 60°
D. It will never regain its original position
Answer
Answer
A. Its centre of gravity falls within the base
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Heat from the sun is received by the earth through
A. Radiation
B. Conduction
C. Convection
D. None of the above
Answer
Answer
A. Radiation
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The picture tube of a black and white T.V. set has only one electron ‘gun’ that produces the picture on its screen. The number of electron ‘gun’ a colour picture tube has, is
A. Three
B. Five
C. Four
D. Six
Answer
Answer
A. Three
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Which one of the following elements is extensively used in electronics?
A. Silicon
B. Zironium
C. Selenium
D. Sodium
Answer
Answer
A. Silicon
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Which one of the following mixture of gases is required in gas welding?
A. Acetylene and hydrogen
B. Acetylene and oxygen
C. Oxygen and ethylene
D. Oxygen and hydrogen
Answer
Answer
B. Acetylene and oxygen
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The largest cell in the human body is
A. Muscle cell
B. Nerve cell
C. Liver cell
D. Kidney cell
Answer
Answer
B. Nerve cell
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Dead red blood corpuscles are stored in
A. Kidney
B. Spleen
C. Heart
D. Liver
Answer
Answer
B. Spleen
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