Subject :NSO Class : Class 5
Subject :NSO Class : Class 8
Ans 2:
Class : Class 8
The S zone is the zone surrounding the wick, where combustion doesn't take place. Hence, statement (iv) is false and the other three are true. Therefore, the answer should be Option D.
Ans 3:
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 8
Ans 3:
Class : Class 10
Sulfur dioxide and chlorine are not produced because CNG is composed of methane. The fact that it produces large amount of carbon dioxide is not helpful or advantageous by any means. Whether it is used in compressed form or not does not make it eco-friendly; but, yes, it produces no smoke SPM upon combustion.
So correct answer is (B).
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Subject :NSO Class : Class 8
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Subject :NSO Class : Class 6
Ans 2:
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Subject :NSO Class : Class 6