Question

ASSERTION (A):- Gold, silver and bromine are pure substances.
REASON (R):- The metal and non-metal are the types of elements based on the variation in properties.

(a) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
(b) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
(c) Assertion (A) is true but reason (R) is false.
(d) Assertion (A) is false but reason (R) is true.​

Answer 1

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Answer 2

ASSERTION (A):- Gold, silver, and bromine are pure substances.

REASON (R):- Metal and non-metal are the types of elements based on the variation in properties.

In this (a) Both assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of assertion (A).

• Pure substances are those that are devoid of any form of mixing and contain one variety of particles. Iron, aluminum, silver, and gold are characteristics of pure substances. Mixtures: Mixtures are substances that include two dissimilar particles.
• Water can always be dissolved in hydrogen & oxygen, however, the material cannot be decomposed into other chemicals. Because silver, gold, and bromine are an element, it exists independently of other substances and requires no other substances to exist; it is purely material.
• Metals & non-metals have distinct physical characteristics, hence they are classed differently. Silver, like gold, is a metal and an element. Because elements constantly appear in the same ions, they are pure.