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

What mass of 95% pure CaCO3 will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction?

CaCO3(s) + 2HCl(aq) $$\to$$ CaCl2(aq) + Co2(g) + 2H2O(l)

[Calculate upto second place of decimal point]

A
1.25 g
B
1.32 g
C
3.65 g
D
9.50 g
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

The pH of the solution containing 50 mL each of 0.10 M sodium acetate and 0.01 M acetic acid is [Given pKa of CH3COOH = 4.57]

A
5.57
B
3.57
C
4.57
D
2.57
3
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)
4
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
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12