JEE MAIN - Chemistry (2021 - 24th February Morning Shift - No. 7)
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 : 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 true but Statement II is false
Statement I is false but Statement II is true
Both Statement I and Statement II are false
Both Statement I and Statement II are true
Explanation
In presence of luminous flame, blue cupric metaborate is
reduced to colourless cuprous metaborate.
_24th_February_Morning_Shift_en_7_1.png)
If non-luminous flame is present in reaction, cupric metaborate is obtained by heating boric anhydride with copper sulphate.
_24th_February_Morning_Shift_en_7_2.png)
So, both statements are false.
If non-luminous flame is present in reaction, cupric metaborate is obtained by heating boric anhydride with copper sulphate.
So, both statements are false.
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