Question

a. Burning of magnesium in air is a
(I)decomposition reaction.
(ii)precipitation reaction.
(iii) double displacement reaction.
(iv) combination reaction.

b. Which of the following is a correct statement?
(I)In a combination reaction, the chemical bonds between the atom of the reactants do not break.
(ii) In a combination reaction, new chemical bonds are formed.
(iii) In a combination reaction, two elements combine to form two or more compounds.
(iv) In a combination reaction, a compound breaks down to give two or more simpler substances.

C. Magnesium burns in nitrogen to give
(I) magnesium nitrate.
(ii) magnesium nitrate and magnesium oxide.
(iii) magnesium nitride.
(iv) magnesium nitrate and magnesium nitride.​

Answer 1

Answer:

a=4

b=2

c=4

Explanation:

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