1
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

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

Assertion A : Helium is used to dilute oxygen in diving apparatus.

Reason R : Helium has high solubility in O$$_2$$.

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

A
Both A and R are true but R is NOT 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 and R is the correct explanation of A.
2
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II:

List I
List II
(A) Coke (I) Carbon atoms are sp$$^3$$ hybridised
(B) Diamond (II) Used as a dry lubricant
(C) Fullerene (III) Used as a reducing agent
(D) Graphite (IV) Cage like molecules

Choose the correct answer from the options given below:

A
A-IV, B-I, C-II, D-III
B
A-III, B-I, C-IV, D-II
C
A-III, B-IV, C-I, D-II
D
A-II, B-IV, C-I, D-III
3
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

The element expected to form largest ion to achieve the nearest noble gas configuration is

A
$$\mathrm{F}$$
B
$$\mathrm{N}$$
C
$$\mathrm{Na}$$
D
$$\mathrm{O}$$
4
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II:

List I
(Oxoacids of Sulphur)
List II
(Bonds)
(A) Peroxodisulphuric acid (I) Two S-OH, Four S=O, One S-O-S
(B) Sulphuric acid (II) Two S-OH, One S=O
(C) Pyrosulphuric acid (III) Two S-OH, Four S=O, One S-O-O-S
(D) Sulphurous acid (IV) Two S-OH, Two S=O

Choose the correct answer from the options given below:

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