For a gas where volume and pressures are 1dm3 and 2 atm respectively what should be its new volume when pressure is increased to 6 atm at constant temperature?
A. 1/2dm3
B. 1/3dm3
C. 1/4dm3
D. 2/3dm3
Correct Answer: B. 1/3dm3
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If 1/V is plotted on X-axis and pressure on Y-axis at constant temperature what should appear
A. A straight line parallel to the x-axis
B. A straight line parallel to the y-axis
C. Straight line
D. Curve
Correct Answer: C. Straight line
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Which one is the right value for R?
A. 0.0821 atm dm3k-1mol-
B. 0.0821 atm m3k-1mol-1
C. 2 cal k-1 mol-1
D. 8.314 Nm2k-1mol-1
Correct Answer: A. 0.0821 atm dm3k-1mol-
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Which one is not the partial pressure of oxygen in the lungs?
A. 0.1526 atm
B. 116 mm of Hg
C. 116 torr
D. 1 atm
Correct Answer: D. 1 atm
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The spreading of fragrance or scent in the air is due to
A. Diffusion
B. Effusion
C. Attraction with air
D. Low density
Correct Answer: A. Diffusion
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The volume of one kilogram of water at 4°C is equal to one litre. The temperature of water is kept at 4°C because water
A. has no dissolved gasses at this temperature
B. has maximum density at this temperature
C. polarity of water molecule is least at this temperature
D. dipole moment has maximum value at this temperature
Correct Answer: B. has maximum density at this temperature
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A piece of paper is burnt in air, the gas produced is passed through distilled water. The PH of water solution will be
A. 1
B. 7
C. 2.1
D. 6.8
Correct Answer: D. 6.8
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