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CHEMISTRY [1 Mark Question Answer]

Unit - 1.1 Matter · ICSE STD 8 (ICSE - English Medium). 6 questions.

Questions

[1 Mark Question Answer]

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6 questions · timed · auto-graded

Question 11 Mark
Define matter. State three characteristics of matter. Can light be classified as matter? Give one reason.
Answer
Light can't be classified as matter as it doesn't cope up with definition nor matter's characteristics.
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Question 21 Mark
Write the correct statements:
By sublimation of air, we can separate oxygen and nitrogen gases.
Answer
By purification of air, we can separate oxygen and nitrogen gases.
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Question 31 Mark
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The process due to which liquid changes into gaseous state by absorbing heat energy at certain temperature is called evaporation.
Answer
The process due to which liquid changes into gaseous state by absorbing heat energy at certain temperature is called boiling.
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Question 41 Mark
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The various state of matter can be interchanged into one another by altering the conditions of volume.
Answer
The various state of matter can be interchanged into one another by altering the conditions of temperature.
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Question 51 Mark
Write the correct statements:
The molecules of a gas generally move in any one direction.
Answer
The molecules of a gas generally move in all direction.
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[1 Mark Question Answer] - CHEMISTRY STD 8 Questions - Vidyadip