1
JEE Advanced 2021 Paper 1 Online
MCQ (More than One Correct Answer)
+4
-2
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The correct statement(s) related to the metal extraction processes is (are) :
A
A mixture of PbS and PbO undergoes self-reduction to produce Pb and SO2
B
In the extraction process of copper from copper pyrites, silica is added to produce copper silicate.
C
Partial oxidation of sulphide ore of copper by roasting, followed by self-reduction produces blister copper.
D
In cyanide process, zinc powder is utilized to precipitate gold from Na[Au(CN)2]
2
JEE Advanced 2021 Paper 1 Online
MCQ (More than One Correct Answer)
+4
-2
Change Language
A mixture of two salts is used to prepare a solution S, which gives the following results :

JEE Advanced 2021 Paper 1 Online Chemistry - Isolation of Elements Question 10 English
The correct option(s) for the salt mixture is (are)
A
Pb(NO3)2 and Zn(NO3)2
B
Pb(NO3)2 and Bi(NO3)3
C
AgNO3 and Bi(NO3)3
D
Pb(NO3)2 and Hg(NO3)2
3
JEE Advanced 2021 Paper 1 Online
Numerical
+4
-0
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The maximum number of possible isomers (including stereoisomers) which may be formed on mono-bromination of 1-methylcyclohex-1-ene using Br2 and UV light is ___________.
Your input ____
4
JEE Advanced 2021 Paper 1 Online
Numerical
+4
-0
Change Language
In the reaction given below, the total number of atoms having sp2 hybridization in the major product P is _________.

JEE Advanced 2021 Paper 1 Online Chemistry - Haloalkanes and Haloarenes Question 9 English
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