Given below are two statements: Statement I : Colourless cu…

JEE Main - Previous Year Papers JEE MAIN 2021 PAPER- 1 Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

Given below are two statements:

Statement I : Colourless cupric metaborate is reduced to cuprous metaborate in a luminous flame.

Statement II : Cuprous metaborate is obtained by heating boric anhydride and copper sulphate in a non-luminous flame.

In the light of the above statements, choose the most appropriate answer from the options given below.

Statement I is false but statement II is true.

Statement I is true but Statement II is false.

Both Statement I and Statement II are true.

Both Statement I and Statement II are false.

Text Solution

Verified by Experts

The correct answer is:

Both are False

Copper sulphate form copper meta boric with beric an hydride

blue in cold oxidising flame (non luminous flame)

Blue coloured metal borate is reduced to copper in a luminous flame.

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