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- 1. Multiple Choice
Which one of the following is an example of a fluid?
Oxygen
Carbon
Phosphorus
Sulphur
- 2. Multiple Choice
235K = _________°C
38
-20
20
-38
- 3. Multiple Choice
Which of the following statements is NOT true?
The molecules in a liquid and a gas can flow.
The molecules in a liquid are arranged in a regular pattern.
The molecules in a gas move about randomly at high speed.
The molecules in a solid vibrate about a fixed position
- 4. Multiple Choice
Name the process by which dry ice changes into carbon dioxide gas.
Evaporation
Condensation
Sublimation
Vaporisation
- 5. Multiple Choice
At what temperature liquid water and steam co-exist?
At the melting point of ice
At the boiling point of water
At the freezing point of water
At the condensation point
- 6. Multiple Choice
Melting point of ice is
273.16K
373.15K
100°C
250.18K
- 7. Multiple Choice
Which of the following undergoes sublimation?
Sodium chloride
Potassium chloride
Ammonium sulphate
Ammonium chloride
- 8. Multiple Choice
In which of the following conditions, the distance between the molecules of hydrogen gas would decrease?
Increasing the pressure on hydrogen in a closed container
Increasing the volume of the container of hydrogen gas
Heating the container
Some hydrogen gas leaking out of container
- 9. Multiple Choice
Which one among the followings has a fixed volume but no fixed shape?
Carbon dioxide
Ice
Kerosene
Xenon
- 10. Multiple Choice
A few substances are arranged in the increasing order of ‘forces of attraction’ between their particles. Which one of the following is the correct arrangement?
oxygen – honey – sugar
oil – air– salt
juice – salt – oxygen
salt – air – sugar solution
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