Question

0.1 Which of the following pair of substances contain element and compound within a
parr?
LA) 0 CH
(B) H.O.
(ON.CO
(D) Na.Co
(a) A CD
(b) B only
(o Cand
D
(d, Ali of these
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Answer 1

Answer:

0.1 Which of the following pair of substances contain element and compound within a

parr?

LA) 0 CH

(B) H.O.

(ON.CO

(D) Na.Co

(a) A CD

(b) B only

(o Cand

D

(d, Ali of these

Answer 2

The correct answer is option (a) A, C, D.

Explanation:

• A, C, D is the pair of substances which contain element and compound within a parr.
• In A, For O₂ → two oxygen atom combines to form O₂, For CH₄ → One carbon and 4 Hydrogen combines to form CH₄.
• In C, For N₂ → two nitrogen atom combines to form N₂, For CO₂ → One carbon and 2 Oxygen combines to form CO₂.
• In D, Na is the atom the element and For CO → One carbon and 1 Oxygen combines to form CO.
• Hence the correct pair will be A, C, D.