1
JEE Main 2023 (Online) 10th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The compound which does not exist is

A
(NH$$_4$$)$$_2$$BeF$$_4$$
B
PbEt$$_4$$
C
BeH$$_2$$
D
NaO$$_2$$
2
JEE Main 2023 (Online) 6th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

LIST I
Oxide
LIST II
Type of bond
A. $$\mathrm{N_2O_4}$$ I. 1 N = O bond
B. $$\mathrm{NO_2}$$ II. 1 N $$-$$ O $$-$$ N bond
C. $$\mathrm{N_2O_5}$$ III. 1 N $$-$$ N bond
D. $$\mathrm{N_2O}$$ IV. 1 N=N / N $$\equiv$$ N bond

Choose the correct answer from the options given below:

A
A-II, B-I, C-III, D-IV
B
A-III, B-I, C-II, D-IV
C
A-III, B-I, C-IV, D-II
D
A-II, B-IV, C-III, D-I
3
JEE Main 2023 (Online) 1st February Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

$$\mathrm{O}-\mathrm{O}$$ bond length in $$\mathrm{H}_{2} \mathrm{O}_{2}$$ is $$\underline{\mathrm{X}}$$ than the $$\mathrm{O}-\mathrm{O}$$ bond length in $$\mathrm{F}_{2} \mathrm{O}_{2}$$. The $$\mathrm{O}-\mathrm{H}$$ bond length in $$\mathrm{H}_{2} \mathrm{O}_{2}$$ is $$\underline{Y}$$ than that of the $$\mathrm{O}-\mathrm{F}$$ bond in $$\mathrm{F}_{2} \mathrm{O}_{2}$$.

Choose the correct option for $$\underline{X}$$ and $$\underline{Y}$$ from those given below :

A
$$\mathrm{X}$$ - shorter, $$\mathrm{Y}$$ - longer
B
$$\mathrm{X}$$ - longer, $$\mathrm{Y}$$ - shorter
C
$$\mathrm{X}$$ - shorter, $$\mathrm{Y}$$ - shorter
D
$$\mathrm{X}$$ - longer, $$\mathrm{Y}$$ - longer
4
JEE Main 2023 (Online) 31st January Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List I List II
A. $$\mathrm{XeF_4}$$ I. See-saw
B. $$\mathrm{SF_4}$$ II. Square-planar
C. $$\mathrm{NH_{4}^{+}}$$ III. Bent T-shaped
D. $$\mathrm{BrF_3}$$ IV. Tetrahedral

Choose the correct answer from the options given below :

A
A - II, B - I, C - III, D - IV
B
A - II, B - I, C - IV, D - III
C
A - IV, B - I, C - II, D - III
D
A - IV, B - III, C - II, D - I
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