D and F Block Elements Test

Result

D and F Block Elements Test - 12

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Weekly Quiz Competition

Question 1
4 / -1

Silver iodide is used for producing artificial rain because AgI

A
is easy to synthesise

B
has crystal structure similar to ice

C
is insoluble in water

D
is easy to spray at high altitude
Question 2
4 / -1

In chromite ore, the oxidation number of iron and chromium are respectively

A
+3, +2

B
+3, +6

C
+2, +6

D
+2, +3
Question 3
4 / -1

The spin only magnetic moment of Fe²⁺ ion (in BM) is approximately

A
4

B
7

C
5

D
6

Solution
Question 4
4 / -1

Anhydrous ferric chloride is prepared by

A
dissolving Fe(OH)₃ in concentrated HCl

B
dissolving Fe(OH)₃ in dilute HCl

C
passing dry HCl over heated iron scrap

D
passing dry Cl₂ gas over heated iron scrap
Question 5
4 / -1

Copper exhibits only + 2 oxidation state in its stable compounds. Why ?

A
Copper is transition metal in +2 state

B
+ 2 state compounds of copper are formed by exothermic reactions

C
Electron configuration of in + 2 state is [Ar]3d ⁹, 4s⁰

D
Copper gives coloured compounds in + 2 state
Question 6
4 / -1

German silver alloy contains

A
zinc, silver and copper

B
nickel, silver and copper

C
germanium, silver and copper

D
zinc, nickel and copper
Question 7
4 / -1

Of the following outer electronic configurations of atoms, the highest oxidation state is achieved by which one of them ?

A
(n-1) d ² , ns²

B
(n-1) d ⁵ , ns¹

C
(n-1) d ³ , ns²

D
(n-1) d ⁵ , ns²
Question 8
4 / -1

KMnO₄ in basic medium is used as

A
strong oxidising agent

B
strong reducing agent

C
strong hydrogenating agent

D
poor reducing agent
Question 9
4 / -1

The spin only magnetic moment of Mn⁴⁺ ion is nearly

A
3 BM

B
6 BM

C
4 BM

D
5 BM

Solution
Question 10
4 / -1

FeSO₄∙(NH₄ )₂ SO₄∙6H₂O is called

A
green salt

B
Glauber's salt

C
Mohr's salt

D
alum

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D and F Block Elements Test - 12

Result

D and F Block Elements Test - 12

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Question 1

is easy to synthesise

has crystal structure similar to ice

is insoluble in water

is easy to spray at high altitude

Question 2

+3, +2

+3, +6

+2, +6

+2, +3

Question 3

4

7

5

6

Solution

Question 4

dissolving Fe(OH)3 in concentrated HCl

dissolving Fe(OH)3 in dilute HCl

passing dry HCl over heated iron scrap

passing dry Cl2 gas over heated iron scrap

Question 5

Copper is transition metal in +2 state

+ 2 state compounds of copper are formed by exothermic reactions

Electron configuration of in + 2 state is [Ar]3d 9, 4s0

Copper gives coloured compounds in + 2 state

Question 6

zinc, silver and copper

nickel, silver and copper

germanium, silver and copper

zinc, nickel and copper

Question 7

(n-1) d 2 , ns2

(n-1) d 5 , ns1

(n-1) d 3 , ns2

(n-1) d 5 , ns2

Question 8

strong oxidising agent

strong reducing agent

strong hydrogenating agent

poor reducing agent

Question 9

3 BM

6 BM

4 BM

5 BM

Solution

Question 10

green salt

Glauber's salt

Mohr's salt

alum

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dissolving Fe(OH)₃ in concentrated HCl

dissolving Fe(OH)₃ in dilute HCl

passing dry Cl₂ gas over heated iron scrap

Electron configuration of in + 2 state is [Ar]3d ⁹, 4s⁰

(n-1) d ² , ns²

(n-1) d ⁵ , ns¹

(n-1) d ³ , ns²

(n-1) d ⁵ , ns²