Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

How many geometrical isomers are possible for the given compound? Ph-CH=CH-CH=CH-COOH

Answer»

2
4
6
8

Answer :B
Discussion
2.

How many geometrical isomers are possible for the complex [Ni(CO)_(4)] which is tetrahedral in nature?

Answer»

SOLUTION :No, isomers, because GEOMETRICAL ISOMERISM is not shown by TETRAHEDRAL complexes.
Discussion
3.

How many geometrical isomers are possible for [Pt(Py)(NH_(3))(Br)(Cl)]?

Answer»

`3`
`4`
`0`
`15`

ANSWER :A::C
Discussion
4.

How many geometrical isomers are possible for [Pd^(2+)(NH_(2)-CH(CH_(3))-CO_(2)^(-))_(2)]^(@) ?

Answer»

2
3
4
6

Solution :`[M(AB)_(2)]` SQ. PLANAR
Discussion
5.

How many geometrical isomers are possible for Hepta-2, 5-dienoic acid:

Answer»


ANSWER :`CH_(3)-HC=CH-CH_(2)-CH=CH-COOH`
FOUR geometrical isomers are possible.
Discussion
6.

How many geometrical isomers are possible for complex [Mab(AB)_(2)]^(n+-)?

Answer»

5
4
3
6

Solution :
Discussion
7.

How many geometrical isomers are possible for

Answer»

2
3
4
8

Answer :C
Discussion
8.

How many geometrical isomers are possible [Co(acac)_(2)BrCl]^(Theta) are:

Answer»

4
3
6
2

Solution :
Discussion
9.

How many geometrical isomers and stereoisomers are possible for [Pt(NO_(2))(NH_(3))(NH_(2)OH)(Py)]^(+) and [Pt(Br)(Cl)(I)(NO_(2))(NH_(3))(Py)] respectively?

Answer»

3 and 15
3 and 30
4 and 15
4 and 30

Solution :No. of geometricl isomers
`[Pt(NO_(2))(NH_(3))(NH_(2)OH)(Py)]^(+)=3 and` No. of stereoisomers for
`[Pt(Br)(CL)(I)(NO_(2))(NH_(3))(Py)]=15+15`
Discussion
10.

How many geometrical isomerms are possible or [Pd^(2+)(NH_(2)-CH(CH_(3))-CO_2^(-))_(2)]

Answer»

2
3
5
6

Solution :
Discussion
11.

How many geometrical isomers and stereoisomers are possible for [Pt(NO_(2))(NH_(3))(NH_(2)OH)(Py)]^(+)" and "[Pt(Br)(Cl)(I)(NO_(2))(NH_(3))(Py)] respectively :

Answer»

3 and 15
3 and 30
4 and 15
4 and 30

Solution :`[M abcd] implies G.I. = 3`
`[M abcdef] implies 15 (All O.A.) implies 30 ("STEREO")`
Discussion
12.

How many geometrical isomers and stereoisomers are possible for[Pt(NO_2)(NH_3)(NH_2OH)(Py)]^(+)and [Pt(Br)(Cl)(I)(NO_2))NH_3)(Py)] respectively ?

Answer»

3 and 15
3 and 30
4 and 15
4 and 30

ANSWER :B
Discussion
13.

How many geomerical isomers are possible for [Pt(Py) (NH3) (Br) (C1) ]?

Answer»

3
4
0
15

Answer :A
Discussion
14.

How many g subshells will be required in case element Uuo is discovered :-

Answer»

1
2
3
None

ANSWER :D
Discussion
15.

How many g of glucose should be dissolved to make one litre solution of 10% glucose

Answer»

1.8 g
180 g
100 g
10 g

Answer :C
Discussion
16.

How many grams are present in one mole of MgSO_(4) ?

Answer»

`130.2`
360
`120.4`
`12.04`

ANSWER :C
Discussion
17.

How many functional groups are present in Norethindrone.

Answer»


SOLUTION :CONTAINS =,`-=`, OH , C=O GROUPS
Discussion
18.

How many formula units are there in a 42 gsample of (NH_4)_2Cr_2O_7(formula wt.=252g) ?

Answer»

`7.0 xx 10^23`
`1.0 xx 10^23`
`6.0 xx 10^23`
`1.4 xx 10^22`

Solution :FORMULA units of `(NH_4)_2 Cr_2O_7`
` = (6.02 xx 10^23)/(252) xx 42 = 1.0 xx 10^23`
Discussion
19.

How many forms of SO_(3)exists

Answer»


SOLUTION :`SO_(3)` exists in 3 SOLID allotropic FORMS.
Discussion
20.

How many following compounds are more acidic that water? (i) NaOH

Answer»


ANSWER :4
Discussion
21.

How many following compounds which has/have electrovalent, covalent and coordinate bonds NH_(4)Cl,NaCl,NaOH, Na(BF_(4))CaCO_(3), Comples of NH_(3) and BF_(3),NaCN,HNC,Ca(NO_(3))

Answer»

SOLUTION :
Discussion
22.

How many following total number of process are endothermic {:(O,rarr,O^(-),N,rarr,N^(-),CL^(+),rarr,Cl,),(N,rarr,N^(+),Ne,rarr,Ne^(+),P,rarr,P^(+),),(S,rarr,S^(+),Be,rarr,Be^(+),Se,rarr,Se^(-2),):}

Answer»


ANSWER :7
Discussion
23.

Howmany faradays of electricityarerequired to deposit10gof calciumfrom molten calcium chloideusing inert electrodes ? (Molarmass of calcium =40 g mol^(-1))

Answer»

`0.5 F`
`1 F`
`0.25 F`
`2F`

Solution :Relatonship obtainedon combing faraday 's first and secondlaws
`W=ZQ=(E )/(F)xxxQ=(Q)/(F)xx(E )=(Q)/(F)xx(M)/(Z)`
`=(Ixxt)/(F)xx(M)/(Z)`
Here Z= electrochemical equivalent
Q = quantity of ELECTRICITY passed
E= equivalent MASS
M=atomic mass
Z= VALENCY of the metal
F = one faraday or 986500 C
given weightof calciumthat has to e DEPOSITED = 10 g z of the metal ion =2
molecular mass of calcuiu `=40 g "mol"^(-1)`
`W=(I.T)/(F)xx(M)/(Z), 10 =(I.T)/(F)xx(40)/(2)`
`(10xx2)/(40)` F=IT `rarr` 0.5 F = I.T
0.5 F of electricity is requiredto deposit10 gof calciumfrommolten calciumchloirideusieng inertelectrodes
Discussion
24.

How many faradays of electricity are required for the following reaction to occur MnO4^- to Mn^(2+)

Answer»

`5F`
`3F`
`1F`
`7F`

Solution :`7MnO_(4)^(-) + 5e^(-) to Mn^(2+) + 4H_2O`
5 MOLES of ELECTRONS i.e, 5F CHARGE is required.
Discussion
25.

Howmanyfaradaysof elecricityare required for thefollowingreactionto occur MnO_(4)^(-) to Mn^(2+)

Answer»

5F
3F
1F
7F

Answer :A
Discussion
26.

How many faradays of electricityare required for the followingreaction to occurMnO_(4)^(-) toMn^(2+)

Answer»

5F
3F
1F
7F

ANSWER :A
Discussion
27.

How many faradays of electricity are involved in each of the case 27.6 gm of SO_3 is covered to SO_3^(2-)

Answer»
Discussion
28.

How many faradays of electricity are involved in each of the case The Cu^(2+) in 1100ml of 0.5M Cu^(2+) in converted to Cu.

Answer»


ANSWER :A
Discussion
29.

How many faradays/coulombs are required to produce (i) 20.0 g of calcium from molten CaCl_(2)? (ii) 40.0 g of aluminium from molten Al_(2)O_(3)?

Answer»


Solution :(i) `CA^(2+)+2E^(-)toCa`
(ii) `Al_(2)O_(3)to underset(2AL)underset(darr+6e^(-))(2Al^(3+))+underset((3)/(2)O_(2))underset(darr-6e^(-))(3O^(2-))`
Discussion
30.

How many faradays of electricity are involved in each of the case 0.25 mole Al^(3+) is converted to Al.

Answer»
Discussion
31.

How many faradays of electric charge is required to liberate 5600cm^(3) of oxygen at STP?

Answer»

SOLUTION :`O^(2-)to(1)/(2)O_(2)+2e^(-)` or `2O^(2-)toO_(2)+4e^(-)`
Thus, 1 mole of `O_(2)`, i.e., 22400 `CM^(3)` requrie 4 faradays of charge.
`therefore5600cm^(3)` of `O_(2)` will REQUIRE charge `=(4)/(22400)xx5600=1` faraday.
Discussion
32.

How many faradays of charge is transferedduring disproportionation of two moles of cuprous ?

Answer»


Solution :`Cu^(+1) to Cu^(0) + Cu^(+2)` (reduction ) , CHARGE = ` 1e^(-)`
`:.` For 1 mole of cu = 2F , For 2 MOLES of Cu = 1F
Discussion
33.

How many faradays of charge is consumed during electrolysis of acidified water producing 33.6lt of gases at both electrodes .

Answer»


SOLUTION :`H_2O overset("electrolysis/2F")to H_2 + (1)/(2) O_2 , 2F to (3)/(2)` mole of gases
` 2F to (3)/(2) XX 22.4L , Q to 33.6 , Q = (33.6 xx 2F xx 2)/(22.4 xx 3) = 2F = 2F`
Discussion
34.

How many faradays are required to reduce 1 mole of Cr_(2)O_(7)^(2-) " to "Cr^(3+) in acid medium ?

Answer»

2
3
5
6

Solution :In acidic medium,
`Cr_(2)O^(7)^(2-) + 14 H^(+) + 6e^(-) rarr 2 Cr^(3+) + 7H_(2)O`
Thus, n=6
Hence 6 F CHARGE is reuqired to reduce 1 moel of `Cr_(2)O_(7)""^(2-) ` to `Cr^(3+)` is acidic medium.
Discussion
35.

How many Faradays are required to liberate one mole of O_(2) gas at N.T.P. during electrolysis of dilute NaOH solution ?

Answer»

1
2
3
4

Answer :B
Discussion
36.

How many faradays are required for reduction of 1 mol C_6 H_5NO_2 into C_6H_5NH_2

Answer»


SOLUTION :`6(H) + C_6H_5NO_2 OVERSET(6F) to C_6H_5 - NH_2 + 2H_2O`
Discussion
37.

How many Faradays are required to generate one gram atom of magnesium from MgCl_2 ?

Answer»

1
2
3
4

Solution :1 mole of electrons =1 F
`MG^(2+) + 2E^(-) rarr Mg`
2 MOLES of electrons = 2F
Discussion
38.

How many faradays are required to liberate 24 cm^3 of H_2 from acidified water at STP.

Answer»

SOLUTION :0.02 FARADAYS.
Discussion
39.

How many Faraday of electric current is required to liberate 5600 cm^3 of oxygen at STP at the electrolysis of acidified water?

Answer»

SOLUTION :ONE FARADAY
Discussion
40.

How many faraday of electricity is required to reduce 1 mole of MnO_(4)^(-) ions to Mn^(2+) ions?

Answer»

SOLUTION :5 (or) (FIVE) or 5F (or) 5 Faraday (any ONE)
Discussion
41.

How many Faraday are required to reduce 1 mole of Cr_(2)O_(7)^(2-) to Cr^(3+) in acid solutions ?

Answer»

2
3
5
6

Solution :(d) The reduction reaction in the acidic medium is :
`Cr_(2)O_(7)^(2-)+14H^(+)+6E^(-) to 2Cr^(3+)+7H_(2)O`
Thus, six Faraday of charge is REQUIRED.
Discussion
42.

How many faraday of electricity is required to liberate 1 mol of copper from a copper sulphate solution?

Answer»

SOLUTION :`Cu^(2+)` is reduced to copper by losing2 electrons.
1 MOL Cu = 63.5 g of Cu = 2 gram - equiv. of Cu Hence electricity REQUIRED = 2F
Discussion
43.

How many f-electrons are present in Tb when it show +3 oxidation state ?

Answer»

6
7
8
9

Answer :C
Discussion
44.

How many ethers are possible for formula C_5H_12O

Answer»

12
14
6
8

Answer :D
Discussion
45.

How many ethers are possible for formula C_4H_10O?

Answer»

2
3
4
5

Answer :B
Discussion
46.

How many faraday are needed to reduce one mole of MnO_4^-to Mn^(2+):

Answer»

4
5
3
2

Answer :B
Discussion
47.

How many ethene molecule is present in ethenetetramer ?

Answer»

1
2
3
4

Answer :D
Discussion
48.

How many equivalents are there in 98 g of H_2SO_4in the following reaction?8H^(+) + H_2SO_4 + 4Zn to H_2S + 4Zn^(2+) + 4H_2OAlso, find out the equivalent weight of H_2SO_4in this reaction.

Answer»

SOLUTION :8 EQ., 12.25
Discussion
49.

How many enols (including stereo isomers) exist for 3 - hexanone?

Answer»

TWO
Three
Four
Six

Answer :C
Discussion
50.

How many enol from is possible for CH_(3)-CH_(2)-overset(O)overset(||)C-CH_(2)-CH_(2)-CH_(3) (including stereoisomers ) wil be ?

Answer»

2
3
4
5

Solution :`CH_(3)-CH=overset(OH)overset(|)C-CH_(2)-CH_(2)-CH_(3)""(E & Z)`
`CH_(3)-CH_(2)-UNDERSET(OH)underset(|)C=CH_(2)-CH_(3) ""("cis & TRANS")`
Total =4 enol forms.
Discussion