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

Match List-I with List-II :

List-I
(Reaction)
List-II
(Product formed)
(a) Gabriel synthesis (i) Benzaldehyde
(b) Kolbe synthesis (ii) Ethers
(c) Williamson synthesis (iii) Primary amines
(d) Etard reaction (iv) Salicylic acid

Choose the correct answer from the options given below :

A
(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)
B
(a) - (iii), (b) - (i), (c) - (ii), (d) - (iv)
C
(a) - (ii), (b) - (iii), (c) - (i), (d) - (iv)
D
(a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)
2
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

If first ionization enthalpies of elements X and Y are 419 kJ mol$$-$$1 and 590 kJ mol$$-$$1, respectively and second ionization enthalpies of X and Y are 3069 kJ mol$$-$$1 and 1145 kJ mol$$-$$1, respectively. Then correct statement is :

A
Both X and Y are alkaline earth metals
B
X is an alkali metal and Y is an alkaline earth metal
C
X is an alkaline earth metal and Y is an alkali metal
D
Both X and Y are alkali metals
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language

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
4
NEET 2022 Phase 2
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) : 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
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