1
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
In the extraction of copper from its sulphate ore, metal is finally obtained by the oxidation of cuprous sulphide with :
A
Fe2O3
B
Cu2O
C
SO2
D
CO
2
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
A group 13 element 'X' reacts with chlorine gas to produce a compound XCl3. XCl3 is electron deficient and easily reacts with NH3 to form Cl3X $$ \leftarrow $$ NH3 adduct ; however, XCl3 does not dimerize X is :
A
B
B
Al
C
Ga
D
In
3
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
When XO2 is fused with an alkali metal hydroxide in presence of an oxidizing agent such as KNO3 ; a dark green product is formed which disproportioates in acidic solution to afforda dark purple solution. X is :
A
Ti
B
V
C
Cr
D
Mn
4
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The correct match between items of List - I and List - II is :

List - I List - II
(A) Phenelzine (P) Pyrimidine
(B) Chloroxylenol (Q) Furan
(C) Uracil (R) Hydrazine
(D) Ranitidine (S) Phenol
A
(A) - (R), (B) - (S), (C) - (P), (D) - (Q)
B
(A) - (s), (B) - (R), (C) - (P), (D) - (Q)
C
(A) - (S), (B) - (R), (C) - (Q), (D) - (P)
D
(A) - (R), (B) - (S), (C) - (Q), (D) - (P)
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