MEDIUM
8th CBSE
IMPORTANT
Earn 100

Which of the following fuels has the lowest calorific value?

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Important Questions on Combustion and Flame

MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Multiple Choice Questions (MCQs)>Q 67
Which of the following is the main cause of global warming?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Multiple Choice Questions (MCQs)>Q 68
Which of the following gases does not contribute to the formation of acid rain?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Multiple Choice Questions (MCQs)>Q 69
Which of the following is the most environment-friendly fuel to be used in automobiles?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Multiple Choice Questions (MCQs)>Q 70
Which of the following does not involve a combustion reaction?
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Multiple Choice Questions (MCQs)>Q 71
A heap of green leaves is lying in one corner of a park. The green leaves in the heap burn with difficulty because
MEDIUM
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Multiple Choice Questions (MCQs)>Q 72
If the clothes of a person working in the kitchen catch fire, then to extinguish the fire:
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Multiple Choice Questions (MCQs)>Q 73
The outermost zone of a candle flame is the:
EASY
8th CBSE
IMPORTANT
Lakhmir Singh's SCIENCE FOR CLASS 8>Chapter 6 - Combustion and Flame>Multiple Choice Questions (MCQs)>Q 74
The flame of a kerosene oil lamp (or lantern) has: