1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
The molar conductivity of 0.007 M acetic acid is 20 S cm2 mol$$-$$1. What is the dissociation constant of acetic acid? Choose the correct option.

[$$\Lambda _{{H^ + }}^o$$ = 350 S cm2 mol$$-$$1

$$\Lambda _{C{H_3}CO{O^ - }}^o$$ = 50 S cm2 mol$$-$$1]
A
2.50 $$\times$$ 10$$-$$5 mol L$$-$$1
B
1.75 $$\times$$ 10$$-$$4 mol L$$-$$1
C
2.50 $$\times$$ 10$$-$$4 mol L$$-$$1
D
1.75 $$\times$$ 10$$-$$5 mol L$$-$$1
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following molecules is non-polar in nature?
A
NO2
B
POCl3
C
CH2O
D
SbCl5
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
Match List-I with List-II :

List-I List-II
(a) $${[Fe{(CN)_6}]^{3 - }}$$ (i) 5.92 BM
(b) $${[Fe{({H_2}O)_6}]^{3 + }}$$ (ii) 0 BM
(c) $${[Fe{(CN)_6}]^{4 - }}$$
(iii) 4.90 BM
(d) $${[Fe{({H_2}O)_6}]^{2 + }}$$
(iv) 1.73 BM


Choose the correct answer from the options given below.
A
(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
B
(a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
C
(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
D
(a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
In which one of the following arrangements the given sequence is not strictly according to the properties indicted against it?
A
CO2 < SiO2 < SnO2 < PbO2 : Increasing oxidizing order
B
HF < HCl < HBr < HI : Increasing acidic strength
C
H2O < H2S < H2Se < H2Te : Increasing pKa values
D
NH3 < PH3 < AsH3 < SbH3 : Increasing acidic character
EXAM MAP