Javascript is required
1
JEE Main 2021 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
The metal that can be purified economically by fractional distillation method is :
A
Fe
B
Zn
C
Cu
D
Ni
2
JEE Main 2021 (Online) 18th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Match List - I with List - II :

List - I List - II
(a) Mercury (i) Vapour phase refining
(b) Copper (ii) Distillation refining
(c) Silicon (iii) Electrolytic refining
(d) Nickel (iv) Zone refining


Choose the most appropriate answer from the option given below :
A
(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
B
(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
C
(a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
D
(a)-(i), (b)-(iv), (c)-(ii), (d)-(iii)
3
JEE Main 2021 (Online) 18th March Morning Shift
MCQ (Single Correct Answer)
+4
-1
The chemical that is added to reduce the melting point of the reaction mixture during the extraction of aluminium is :
A
Cryolite
B
Bauxite
C
Calamine
D
Kaolite
4
JEE Main 2021 (Online) 17th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Match List - I with List - II :

List - I List - II
(a) Haematite (i) $$A{l_2}{O_3}\,.\,x{H_2}O$$
(b) Bauxite (ii) $$F{e_2}{O_3}$$
(c) Magnetite (iii) $$CuC{O_3}\,.\,Cu{(OH)_2}$$
(d) Malachite (iv) $$F{e_3}{O_4}$$


Choose the correct answer from the options given below :
A
(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
B
(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
C
(a)-(ii), (b)-(iii), (c)-(i), (d)-(iv)
D
(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
JEE Main Subjects
© 2023 ExamGOAL