d and f block elements McQs

1.       

Transition metals elements make alloys with;

a..S block elements

b..P block elements

c..F block elements

d..All of these

D

2.       

There are two irregularities at3rd period atomic configurator, one is atomic number 24 and other is atomic number

a..22

b..23

c..29

d..30

C

3.       

Binding energy increase upto GVII and then decreases, in 3rd period it increases upto

a..Scandium

b..Titanium

c..Vanadium

d..Chromium

C

4.       

Catalyst used in oxidation of ethanol to acetaldehyde is;

a..Iron

b..Vanadium oxide

c..Titanium chloride

d..Copper

D

5.       

Substances which have unaired electrons

a..Paramagnetic

b..Diamagnetic

c..Ferromagnetic

d..All of these

A

6.       

Percentage of copper in Gold is

a..20-25

b..60-80

c..75-90

d..90-95

A

7.       

6-coordinated complex have shape of

a..Tetrahedral and square planar

b..Trignal pyramiral

c..Square pyramidral

d..Octahedral

D

8.       

Which complex have purple colour

a..Sc+3

b..Ti+3

c..Ti+4

d..Cr+3

B

9.       

Vanadium has colourless in its oxidation state of

a..+5

b..+4

c..+3

d..+2

A

10.   

Nature rank and specific gravity of Chromium is

a..7.0 and 20

b..7.2 and 21

c..7.4 and 12

d..Non of these

B

11.   

Stable state of Chromium and manganese is

a..+2 and +2

b..+2 and +3

c..+3 and +2

d..+3 and +3

C

12.   

Chromium has covalent compounds, where its oxidation state will be

a..+2

b..+3

c..+6

d..All of these

C

13.   

Chromate dichromate equilibrium will give more orange colour if we add

a..Acid to it

b..Base to it

c..Amphoteric to it

d,,All of these

A

14.   

Which one of the following are not oxidized by potassium dichromate

a..Primary alcohol

b..Secondary alcohol

c..Tertiary alcohol

d..All of these

C

15.   

Cr2O7-2 and Fe+2 react in ratio of

a..1:2

b..1:3

c..1:6

d..1:9

C

16.   

Which one of the following is used to find the unknown concentration of Fe+3

a..Potassium dichromate

b..Potassium manganite

c..Thiocyanate

d..Non of these

C

17.   

Under acidic condition, the manganite VII ions are reduced to

a..Manganate II

b..Manganate VI → dark green

c..Manganate IV → Dark brown

d..Manganate III

A

18.   

Potassium dichromate and potassium mangnate VII are

a..Strong oxidizing agent

b..Strong reducing agent

c..Weak acid

d..Weak base

A

19.   

The percentage of Carbon in pig iron is

a..0.1-0.25

b..0.1-0.25

c..2-3

d..Non of these

C

20.   

The ions used in the reaction of persulphate and iodide ions is  that of

a..Scandium

b..Titanium

c..Iron

d..cobalt

C

21.   

Hexa aqua iron II does not react with

a..Water

b..OH

c..Ammonia

d..Acid

B

22.   

Fe(H2O)4(OH)2 has colour of

a..Orange

b..Brown

c..White

d..Yellow

A

23.   

Copper  is more stable at moderate temperatures and aqueous solution and also colourless and coloured  in state of

a..+1 and +1

b..+1 and +2

c..+2 and +1

d..+2 and +2

B

24.   

Copper has diamagnetic compound and there its oxidation state is

a..+1

b..+2

c..+1 and +2

A

25.   

Cooper is paramagnetic

Cu (H2O)4(OH)2 has

a..Blue ppt

b.. Black ppt

c..Blue solution

d..Black solutiom

A

26.   


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