1) Matter is made up of particles known as
a. molecules b. chemicals c. radicants d. hydrocarbons
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2) At sea level, the atmospheric pressure is about
a. 101,300 Pa b. 125,000 Pa c. 163,000 Pa d. 200,300 Pa
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3) In SI, the unit of stress is
a. Nm-3 b. Nm4 c. Nm-2 d. Nm-1
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4) 1 Pa is equal to
a. 2 Nm-2 b. 5 Nm-2 c. 1 Nm-2 d. 10 Nm-2
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5) The ionic state of matter in which the electrons of atom become positive ions is called as
a. gas b. plasma c. solid d. liquid
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6) The density of air in the atmosphere is
a. uniform b. not uniform c. zero d. none of above
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7) A gradual large increase in the atmospheric pressure predicts
a. intense weather condition b. no change in weather c. long spell of pleasant weather d. none of above
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8) If the density of air is 1.3 kgm-3. The mass of air in a room measuring 8m×5m×4m is
a. 210 kg b. 208 kg c. 215 kg d. 220 kg
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9) The density of 5 lit of water having mass 5 kg is
a. 100 kg m-3 b. 500 kg m-3 c. 750 kg m-3 d. 1000 kg m-3
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10) The density of water is
a. 100 kgm-3 b. 10 kgm-3 c. 1000 kgm-3 d. 2000 kgm-3
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