1
JEE Main 2023 (Online) 6th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Polymer used in orlon is :

A
Polyethene
B
Polyacrylonitrile
C
Polycarbonate
D
Polyamide
2
JEE Main 2023 (Online) 6th April Morning 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 spin only magnetic moment value for $$\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$$ is $$1.74 \mathrm{BM}$$, whereas for $$\left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}$$ is $$5.92 \mathrm{BM}$$.

Reason $$\mathbf{R}$$ : In both complexes, $$\mathrm{Fe}$$ is present in +3 oxidation state.

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

A
Both A and R are true and R is the correct explanation of A
B
A is true but R is false
C
A is false but R is true
D
Both A and R are true but R is NOT the correct explanation of A
3
JEE Main 2023 (Online) 6th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Match List I with List II

LIST I
Vitamin
LIST II
Deficiency disease
A. Vitamin A I. Beri-Beri
B. Thiamine II. Cheilosis
C. Ascorbic acid III. Xeropthalmia
D. Riboflavin IV. Scurvy

Choose the correct answer from the options given below:

A
A-III, B-I, C-IV, D-II
B
A-IV, B-I, C-III, D-II
C
A-IV, B-II, C-III, D-I
D
A-III, B-II, C-IV, D-I
4
JEE Main 2023 (Online) 6th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The standard electrode potential of $$\mathrm{M}^{+} / \mathrm{M}$$ in aqueous solution does not depend on

A
Ionisation of a gaseous metal atom
B
Sublimation of a solid metal
C
Ionisation of a solid metal atom
D
Hydration of a gaseous metal ion
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