A glass tumbler breaks into pieces; which statement is correct about this change? A New substance forms B Only shape
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Chapter 28: Chemical Changes and Core Chemistry (Set-1)
Which change is usually reversible and forms no new substance? A Burning paper B Rusting iron C Melting ice D
Continue readingChapter 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
Continue readingChapter 27: Matter in Our Surroundings and Atomic Structure (Set-4)
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
Continue readingChapter 27: Matter in Our Surroundings and Atomic Structure (Set-2)
A closed syringe with trapped air is pressed. Which property is clearly shown? A Fixed shape B High compressibility C
Continue readingChapter 27: Matter in Our Surroundings and Atomic Structure (Set-1)
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
Continue readingChapter 26: Air and Atmosphere (Set-4)
In an aneroid barometer, atmospheric pressure changes are shown by A Mercury column B Water level rise C Flexible metal
Continue readingChapter 26: Air and Atmosphere (Set-3)
A paper strip moves toward a nearby blowing fan mainly because of A Electric charge B Water absorption C Magnetic
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