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- 1. Multiple Choice
In which state of matter, process of diffusion is fastest?
Liquids
Solids
Gases
Semi-solids
- 2. Multiple Choice
Intermolecular forces of attraction are least effective in:
Solids
Gases
Liquids
Plasma
- 3. Multiple Choice
During summer, water kept in an earthen pot becomes cool because of the phenomenon of:
diffusion
transpiration
osmosis
evaporation
- 4. Multiple Choice
On converting 25°C, 38°C and 66°C to Kelvin scale, the correct sequence of temperature will be:
298 K, 311 K and 339 K
298 K, 300 K and 338 K
273 K, 278 K and 543 K
298 K, 310 K and 372 K
- 5. Multiple Choice
Which condition out of the following will increase the evaporation of water?
Increase in temperature of water
Decrease in temperature of water
Less exposed surface area of water
Adding common salt to water
- 6. Multiple Choice
A few substances are arranged in the increasing order of "forces of attraction" between their particles. Which one of the following represents a correct arrangement?
water, air, wind
air, sugar, oil
oxygen, water, sugar
sugar, juice, air
- 7. Multiple Choice
When water gets solidified into ice, then heat is:
absorbed
evolved
first absorbed then evolved
initially evolved then absorbed
- 8. Multiple Choice
Choose the correct statement of the following:
Conversion of vapours into solid without passing through the liquid state is called vapourisation
Conversion of vapours into solid without passing through the liquid state is called freezing
Conversion of solid into liquid is called freezing
Conversion of solid into vapours without passing through the liquid state is called sublimation
- 9. Fill in the Blank
Sponge is a solid but still it can be compressed because it has _______ .
- 10. Multiple Choice
What is dry ice?
Solid oxygen
Solid nitrogen
Solid carbon dioxide
Solid water
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