1
JEE Main 2022 (Online) 26th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Refining using liquation method is the most suitable for metals with:

A
Low melting point
B
High boiling point
C
High electrical conductivity
D
Less tendency to be soluble in melts than impurities
2
JEE Main 2022 (Online) 26th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Reaction of $$\mathrm{BeCl}_{2}$$ with $$\mathrm{LiAlH}_{4}$$ gives :

(A) $$\mathrm{AlCl}_{3}$$

(B) $$\mathrm{BeH}_{2}$$

(C) $$\mathrm{LiH}$$

(D) $$\mathrm{LiCl}$$

(E) $$\mathrm{BeAlH}_{4}$$

Choose the correct answer from options given below :

A
(A), (D) and (E)
B
(A), (B) and (D)
C
(D) and (E)
D
(B), (C) and (D)
3
JEE Main 2022 (Online) 25th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of density is

A
Be > Mg > Ca > Sr
B
Sr > Ca > Mg > Be
C
Sr > Be > Mg > Ca
D
Be > Sr > Mg > Ca
4
JEE Main 2022 (Online) 25th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Choose the correct order of density of the alkali metals:

A
Li < K < Na < Rb < Cs
B
Li < Na < K < Rb < Cs
C
Cs < Rb < K < Na < Li
D
Li < Na < K < Cs < Rb
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