Back to 13 TH GROUP ELEMENTS (P-BLOCK)
NEET UG CHEMISTRY MCQ: 13 TH GROUP ELEMENTS (P-BLOCK)
1
Easy
1 of 1
Analyzing
+4 | -1
Given below are two statements:
Statement I : Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green.
Statement II: The green colour observed is due to the formation of copper(I) metaborate.
In the light of the above statements, choose the most appropriate answer from the options given below.
Statement I : Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the bead becomes green.
Statement II: The green colour observed is due to the formation of copper(I) metaborate.
In the light of the above statements, choose the most appropriate answer from the options given below.
View answer and explanation
Correct option: C
Both Statement I and Statement II are false
The correct answer is C (Both Statement I and Statement II are false) because in a luminous flame, the borax bead with cupric sulfate turns blue due to copper(II) metaborate, not green, and it's copper(II), not copper(I).
More Questions from 13 TH GROUP ELEMENTS (P-BLOCK)
Practice All Chapter MCQs →
The hardest compound of boron is:
Which does not show inert pair effect?
Which one of the following does not exist in the free state
On strong heating of and , sum of oxidation number of in the final product obtained is
Compound ‘X’ reacts with to 473 K give another compound ‘Y’. X can be prepared by heating with sodium hydride. The compound ‘Y’ is represented by the formula
Assertion: Electronegativity first increases from B to Al and then decreases from Al to .
Reason: Due to poor shielding by inner and electrons.
Reason: Due to poor shielding by inner and electrons.