1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

The incorrect statement about denaturation of proteins is :

A
Uncoiling of the helical structure takes place
B
It results due to change of temperature and/or pH
C
It results in loss of biological activity of proteins
D
A protein is formed from amino acids linked by peptide bonds
2
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus

Four gas cylinders containing He, N2, CO2 and NH3 gases separately are gradually cooled from a temperature of 500 K. Which gas will liquify first?

(Given Tc in K $$-$$ He : 5.3, N2 : 126, CO2 : 304.1 and NH3 : 405.5)

A
NH3
B
He
C
N2
D
CO2
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

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

Assertion (A) : The metal carbon bond in metal carbonyls possesses both $$\sigma$$ and $$\pi$$ character.

Reason (R) : The ligand to metal bond is a $$\pi$$ bond and metal to ligand bond is a $$\sigma$$ bond.

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

A
(A) is not correct but (R) is correct
B
Both (A) and (R) are correct and (R) is the correct explanation of (A)
C
Both (A) and (R) are correct but (R) is not the correct explanation of (A)
D
(A) is correct but (R) is not correct
4
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus

Match List-I with List-II :

List-I
List-II
(a) Biochemical oxygen demand (i) oxidising mixture
(b) Photochemical smog (ii) polar stratospheric cloud
(c) Classical smog (iii) organic matter in water
(d) Ozone layer depletion (iv) reducing mixture

Choose the correct answer from the options given below :

A
(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)
B
(a) - (i), (b) - (iv), (c) - (ii), (d) - (iii)
C
(a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)
D
(a) - (iii), (b) - (i), (c) - (iv), (d) - (ii)
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