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CBSE Notes 2011-2012

Burning Magnesium ribbon is brought in the gas jar of carbon dioxide. Which of the following is corr...

Multiple choice question

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

unknown

(i) and (iv)

unknown

(i) and (iii)

unknown

(i) and (ii)

unknown

(iii) and (iv)