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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