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Combustion and Flame · MP Board (MPBSE) STD 8 (Madhya Pradesh - English Medium). 22 questions.

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22 questions · timed · auto-graded

Question 11 Mark
Fill in the following blanks with suitable words: Fire produced by burning oil cannot be controlled by $............$
Answer
Fire produced by burning oil cannot be controlled by water.
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Question 21 Mark
Fill in the following blanks with suitable words: A fuel must be heated to its $............$ before it starts burning.
Answer
A fuel must be heated to its ignition temperature before it starts burning.
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Question 31 Mark
Fill in the following blanks with suitable words: A liquid fuel used in homes is $............$
Answer
A liquid fuel used in homes is kerosene.
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Question 41 Mark
Fill in the following blanks with suitable words: Burning of wood and coal causes $............$ of air.
Answer
Burning of wood and coal causes pollution of air.
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Question 91 Mark
The increase in amount of $...........$ gas in atmosphere results in global warming.
Answer
carbon dioxide
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Question 201 Mark
Fill in the following blanks with suitable words: The amount of heat evolved when $1\ kg$ of a fuel is burnt completely is called its $...........$
Answer
The amount of heat evolved when $1\ kg$ of a fuel is burnt completely is called its calorific value.
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Question 211 Mark
Fill in the following blanks with suitable words: The substances which vaporise during burning, give $...........$
Answer
The substances which vaporise during burning, give flames.
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Question 221 Mark
Fill in the following blanks with suitable words: The most common supporter of combustion around us is $...........$
Answer
The most common supporter of combustion around us is air.
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Fill in the blanks: [1 M] - Science STD 8 Questions - Vidyadip