1
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
2
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 $$ \mathrm{Cl}_{2}$$
3
JEE Main 2022 (Online) 28th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Concentrated $$\mathrm{HNO}_{3}$$ reacts with Iodine to give :

A
HI, $$\mathrm{NO}_{2}$$ and $$\mathrm{H}_{2} \mathrm{O}$$
B
$$\mathrm{HIO}_{2}, \mathrm{~N}_{2} \mathrm{O}$$ and $$\mathrm{H}_{2} \mathrm{O}$$
C
$$\mathrm{HIO}_{3}, \mathrm{NO}_{2}$$ and $$\mathrm{H}_{2} \mathrm{O}$$
D
$$\mathrm{HIO}_{4}, \mathrm{NO}_{2}$$ and $$\mathrm{H}_{2} \mathrm{O}$$
4
JEE Main 2022 (Online) 28th July Evening Shift
MCQ (More than One Correct Answer)
+4
-1
Change Language

Which of the following pair is not isoelectronic species?

(At. no. Sm, 62; Er, 68; Yb, 70; Lu, 71; Eu, 63; Tb, 65; Tm, 69)

A
$$\mathrm{Sm}^{2+}$$ and $$\mathrm{Er}^{3+}$$
B
$$\mathrm{Yb}^{2+}$$ and $$\mathrm{Lu}^{3+}$$
C
$$\mathrm{Eu}^{2+}$$ and $$\mathrm{Tb}^{4+}$$
D
$$\mathrm{Tb}^{2+}$$ and $$\mathrm{Tm}^{4+}$$
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