1
JEE Main 2022 (Online) 26th July Evening Shift
+4
-1

The metal that has very low melting point and its periodic position is closer to a metalloid is

A
Al
B
Ga
C
Se
D
In
2
JEE Main 2022 (Online) 26th July Evening Shift
+4
-1

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: $$\mathrm{LiF}$$ is sparingly soluble in water.

Reason R: The ionic radius of $$\mathrm{Li}^{+}$$ ion is smallest among its group members, hence has least hydration enthalpy.

In the light of the above statements, choose the most appropriate answer from the options given below.

A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is NOT the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
3
JEE Main 2022 (Online) 26th July Morning Shift
+4
-1

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
4
JEE Main 2022 (Online) 26th July Morning Shift
+4
-1

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)
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Mechanics
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Modern Physics
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