Chemistry Test 105

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Chemistry Test 105

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Weekly Quiz Competition

Question 1
4 / -1

Identify the correct set which can only act as oxidants :-

A
NO₃^–, SO₃, Na

B
Fe⁺³, NO₃^–, SO₃

C
I^–, Na

D
I^–, NO₃^–

Solution

Fe⁺³, NO₃^–, SO₃
+3 +5 +6
Central atom has maximum oxidation state, so they will only act as oxidising agent
Question 2
4 / -1

The best reducing agent is :-

A
HI

B
NaOCl

C
FeCl₃

D
KBr
Question 3
4 / -1

Fe shows an oxidation state of +1 in :-

A
Fe(CO)₅

B
[Fe(H₂O)₅NO]SO₄

C
Fe₄[Fe(CN)₆]₃

D
FeCl₄^–
Question 4
4 / -1

Choose the group of reactions showing no oxidation :

(a) Cl₂ → 2Cl^– (b) Fe⁺³ → Fe⁺²

(c) MnO₄^– → Mn⁺² (d) Ce⁺² → Ce⁺³

A
a, b, c

B
only a and b

C
b and d

D
only b and c
Question 5
4 / -1

KMnO₄ reacts with oxalic acid according to the equation :

2MnO₄^– + 5C₂O₄^–2 + 16H⁺ → 2Mn²⁺ + 10CO₂ + 8H₂O

Here 20 ml of 0.1 M KMnO₄ is equivalent to :

A
20 ml of 0.5M C₂H₂O₄

B
50 ml of 0.1M C₂H₂O₄

C
50 ml of 0.5M C₂H₂O₄

D
20 ml of 0.1M C₂H₂O₄
Question 6
4 / -1

In the following reaction what will be the ratio of coefficient of MnO₄^– and Fe⁺² respectively after balancing

MnO₄^– + Fe⁺² → Mn⁺² + Fe⁺³

A
1 : 2

B
1 : 3

C
1 : 4

D
1 : 5
Question 7
4 / -1

When potassium permanganate is titrated against ferrous ammonium sulphate in acidic medium, the equivalent weight of potassium permanganate is :-

A

B

C

D
Question 8
4 / -1

Number of moles of MnO₄^– required to oxidise one mole of ferrous oxalate completely in acidic medium will be :-

A
7.5 mole

B
0.2 mole

C
0.6 mole

D
0.4 mole
Question 9
4 / -1

Which of the following does not act as lewis acid ?

A
BF₃

B
SnCl₄

C
CCl₄

D
SF₄

Solution

'C' do not have vacant orbital to accept lone pair.
Question 10
4 / -1

Which of following is not hydrolysed in normal condition :

A
NCl₃

B
SiCl₄

C
CCl₄

D
SnCl₄

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Chemistry Test 105

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Chemistry Test 105

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Question 1

NO3–, SO3, Na

Fe+3, NO3–, SO3

I–, Na

I–, NO3–

Solution

Question 2

HI

NaOCl

FeCl3

KBr

Question 3

Fe(CO)5

[Fe(H2O)5NO]SO4

Fe4[Fe(CN)6]3

FeCl4–

Question 4

a, b, c

only a and b

b and d

only b and c

Question 5

20 ml of 0.5M C2H2O4

50 ml of 0.1M C2H2O4

50 ml of 0.5M C2H2O4

20 ml of 0.1M C2H2O4

Question 6

1 : 2

1 : 3

1 : 4

1 : 5

Question 7

Question 8

7.5 mole

0.2 mole

0.6 mole

0.4 mole

Question 9

BF3

SnCl4

CCl4

SF4

Solution

Question 10

NCl3

SiCl4

CCl4

SnCl4

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NO₃^–, SO₃, Na

Fe⁺³, NO₃^–, SO₃

I^–, Na

I^–, NO₃^–

FeCl₃

Fe(CO)₅

[Fe(H₂O)₅NO]SO₄

Fe₄[Fe(CN)₆]₃

FeCl₄^–

20 ml of 0.5M C₂H₂O₄

50 ml of 0.1M C₂H₂O₄

50 ml of 0.5M C₂H₂O₄

20 ml of 0.1M C₂H₂O₄

BF₃

SnCl₄

CCl₄

SF₄

NCl₃

SiCl₄

CCl₄

SnCl₄