Question

1. Burning Magnesium ribbon is brought in the gas jar of carbon dioxide. Which of the following is
correct?
(i) It keeps on burning
(11) It gets extinguished
(III) Although CO2 is non-supporter of combustion but burning magnesium breaks CO2 into
carbon and oxygen, oxygen helps in burning.
(iv) Carbon dioxide is supporter of combustion.
(a) (i) and (iv)
(b) (i) and (iii) (c) (i) and (ii) (d) (iii) and (iv)
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Answer 1

Magnesium burns in carbon dioxide because the oxygen in the carbon dioxide is able to bond with magnesium and produce an oxide. Hence it keeps on burning.

therefore answer is a

Answer 2

Answer:

Answer is (b) (i) and (iii)