1
JEE Main 2022 (Online) 28th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements: One is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathbf{R}$$

Assertion A : The reduction of a metal oxide is easier if the metal formed is in liquid state than solid state.

Reason $$\mathbf{R}$$ : The value of $$\Delta G ^\Theta$$ becomes more on negative side as entropy is higher in liquid state than solid state.

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

A
Both A and R are correct and R is the correct explanation of A
B
Both A and R are correct but R is NOT the correct explanation of A
C
A is correct but R is not correct
D
A is not correct but R is correct
2
JEE Main 2022 (Online) 28th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

The products obtained during treatment of hard water using Clark's method are :

A
$$\mathrm{CaCO}_{3}$$ and $$\mathrm{MgCO}_{3}$$
B
$$\mathrm{Ca}(\mathrm{OH})_{2}$$ and $$\mathrm{Mg}(\mathrm{OH})_{2}$$
C
$$\mathrm{CaCO}_{3}$$ and $$\mathrm{Mg}(\mathrm{OH})_{2}$$
D
$$\mathrm{Ca}(\mathrm{OH})_{2}$$ and $$\mathrm{MgCO}_{3}$$
3
JEE Main 2022 (Online) 28th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Statement I : An alloy of lithium and magnesium is used to make aircraft plates.

Statement II : The magnesium ions are important for cell-membrane integrity.

In the light the above statements, choose the correct answer from the options given below :

A
Both Statement I and Statement II are true
B
Both Statement I and Statement II are false
C
Statement I is true but Statement II is false
D
Statement I is false but Statement II is true
4
JEE Main 2022 (Online) 28th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

White phosphorus reacts with thionyl chloride to give :

A
$$\mathrm{PCl}_{5}, \mathrm{SO}_{2}$$ and $$\mathrm{S}_{2} \mathrm{Cl}_{2}$$
B
$$\mathrm{PCl}_{3}, \mathrm{SO}_{2}$$ and $$\mathrm{S}_{2} \mathrm{Cl}_{2}$$
C
$$\mathrm{PCl}_{3}, \mathrm{SO}_{2}$$ and $$ \mathrm{Cl}_{2}$$
D
$$\mathrm{PCl}_{5}, \mathrm{SO}_{2}$$ and $$ \mathrm{Cl}_{2}$$
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