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

Match List-I with List-II.

List - I
(Products formed)
List - II
(Reaction of carbonyl compound with)
(a) Cyanohydrin (i) NH$$_2$$OH
(b) Acetal (ii) RNH$$_2$$
(c) Schiff's base (iii) Alcohol
(d) Oxime (iv) HCN

Choose the correct answer from the options given below

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

Which amongst the following is incorrect statement?

A
The bond orders of O$$_2^ + $$, O2, O$$_2^ - $$ and O$$_2^ {2-} $$ are 2.5, 2, 1.5 and 1, respectively
B
C2 molecule has four electrons in its two degenerate $$\pi$$ molecular orbitals
C
H$$_2^ + $$ ion has one electron
D
O$$_2^ + $$ ion is diamagnetic
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements:

Statement I : In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. HCl + ZnCl2, known as Lucas Reagent.

Statement II : Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent.

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

A
Both Statement I and Statement II are correct
B
Both Statement I and Statement II are incorrect
C
Statement I is correct but Statement II is incorrect
D
Statement I is incorrect but Statement II is correct
4
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

If radius of second Bohr orbit of the He+ ion is 105.8 pm, what is the radius of third Bohr orbit of Li2+ ion?

A
158.7 pm
B
15.87 pm
C
1.587 pm
D
158.7 $$\mathop A\limits^o $$
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