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1321. When the temperature of a gas sample filled in a container is increased, its pressure increases. Which of the following are the reasons for it ? 1. Gas molecules exert more force on each other than before2. Gas molecules move faster than before and strike the wals of the container more often3. Each impact of the fas molecules on the walls of the container yields a greater force than before4. Ompacts are now distributed over a smaller area
A. 1, 2 and 3
B. 1, 3 and 4
C. 2 and 4
D. 2 and 3
Explanation:
1322. Sulphuric acid is used in the manufacture of : 1. Ferftilisers 2. Dyestuff intermediates3. Pigments and paints4. Storage batteries
A. 1 and 2
B. 2 and 3
C. 1, 2, 3 and 4
D. 1, 3 and 4
Explanation:
1323. Which one of the following statements is correct / A slab of ice kept in a room :
A. does not radiate heat
B. does not radiate heat but absorbs heat from the surrounding
C. radiates heat but absorbs more heat from the surrounding
D. radiates heat more than that absorbed by it from the surrounding
Explanation:
1324. Carbon tetrachloride fire extinguisher should not be used in closed rooms, because it produces a poisonous gas called
A. carbon monoxide
B. phosphine
C. phosgene
D. None of these
Explanation:
1325. When two bodies, a heavy one and a light one are acted upon by the same force for the same time then :
A. the light body builds up a lower velocity than the heavy one and the momentum gained is different in both cases
B. the light body builds up a higher velocity than the heavy one and the mementum gained is dfferent in both cases
C. the light body builds up a higher velocity than the heavy one and the momentum gained is the same in both cases
D. none of the above is correct
Explanation:
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