What era preceded the Old Stone Age (Paleolithic Era.?
A. Neolithic Era
B. Mesolithic Era
C. Bronze Age
D. None of the above
Correct Answer: D. None of the above
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What was the primary source of light used during the Old Stone Age?
A. Electric lights
B. Candles
C. Oil lamps
D. Fire
Correct Answer: D. Fire
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What was the main source of food during the Old Stone Age?
A. Farming
B. Fishing
C. Hunting and gathering
D. Fishing and hunting
Correct Answer: C. Hunting and gathering
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The partial pressure exerted by the water vapours is called
A. Surface tension
B. Aqueous tension
C. Vapour pressure
D. Hydraulic pressure
Correct Answer: B. Aqueous tension
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The highest temperature at which a substance can exist as a liquid is called its
A. Critical temperature
B. Standard temperature
C. Absolute temperature
D. Upper consulate temperature
Correct Answer: A. Critical temperature
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What will be the pressure of 1 mole of an ideal gas maintained at 300 K and 250cm3 volume?
A. 98.5 atm
B. 96.7 atm
C. 95.8 atm
D. 97.1 atm
Correct Answer: A. 98.5 atm
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The processes of effusion and diffusion are best to understand by
A. Daltons law
B. Avogadro’s law
C. Grahams law
D. Charles law
Correct Answer: C. Grahams law
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