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Question 1 A substance which reacts with oxygen giving heat is called a combustible substance. Which, one of the following is a combustible substance? (a) Iron nail (b) Glass (c) Stone piece (d) Wood

Answer» Question 1
A substance which reacts with oxygen giving heat is called a combustible substance. Which, one of the following is a combustible substance?

(a) Iron nail
(b) Glass
(c) Stone piece
(d) Wood


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