Question

Which of the following only contain non-metals?
(a) Carbohydrates
(b) Proteins
(c) Alloys
(d) Both (a) and (b)
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Answer 1

Answer:

(d) both (a) and (b)

Explanation:

Carbohydrates = C, H, O

Proteins = C, H, O, N

Answer 2

The correct option is d.

• Carbohydrates have the formula $C_6H_{12}O_6$. Thus it contains Carbon, hydrogen and oxygen which are non-metal atoms.
• Protein consists of Carbon, hydrogen, oxygen and nitrogen atoms which are non-metal.
• Alloy is made from two or more metals. Thus it contains metal.
• Both Carbohydrate and protein contains non-metal.