Which change is usually reversible and forms no new substance? A Burning paper B Rusting iron C Melting ice D
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Chapter 27: Matter in Our Surroundings and Atomic Structure (Set-5)
Two liquids A and B have the same temperature. A evaporates faster. The most likely reason is A has A
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On a humid day, sweat dries slowly mainly because the air has A High water vapour B Low air pressure
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When steam touches a cold surface and turns into water drops, the change is A Condensation B Evaporation C Freezing
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A closed syringe with trapped air is pressed. Which property is clearly shown? A Fixed shape B High compressibility C
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Which statement best describes matter? A Only visible things B Only living things C Has mass, occupies space D Only
Continue readingChapter 26: Air and Atmosphere (Set-5)
In a sealed syringe, pushing the plunger inward becomes harder mainly because A Air becomes solid B Air has no
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In an aneroid barometer, atmospheric pressure changes are shown by A Mercury column B Water level rise C Flexible metal
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A paper strip moves toward a nearby blowing fan mainly because of A Electric charge B Water absorption C Magnetic
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A syringe with the nozzle closed is hard to push mainly because air A Occupies space B Has no mass
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