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.

Industrial name for H_2S_2O_7 is

Answer»

Pyrosulphuric acid
Marshall's acidAll of the above

Solution :`H_(2)S_(2)O_(7)` (Pyrosulphuric (acid) is INDUSTRIALLY known as oleum).
Discussion
2.

Industrial name for H_2 S_2 O_7 is

Answer»

Pyrosulphuric acid
Marshall's acid
OLEUM
All of the above

SOLUTION :`H_(2)S_(2)O_(7)` (Pyrosulphuric acid ) is INDUSTRIALLY KNOWN as oleum.
Discussion
3.

Industrial alcohol mixed with petrol and benzene is :

Answer»

ABSOLUTE alcohol
Proof spirit
Power alcohol
None

Answer :C
Discussion
4.

Indirect addition of water molecule to alkene, during the preparation of alcohol in laboratory is takes place in presence of which reagent ?

Answer»

`BH_(3)`
`(BH_(3))_(2)`
`H_(2)O_(2)`
All of these

SOLUTION :`(BH_(3))_(2)`
Discussion
5.

Indigo shows cis-trans isomerism. Which is the stable form of Indigo

Answer»

EITHER cis or TRANS
Trans
Cis
Both of the above

Solution :Trans FORM of Indigo is more STABLE.
Discussion
6.

Iodine has highest oxidation number in the compound :

Answer»

`KIO_4`
`IF_5`
`KI_2`
KI

Answer :A
Discussion
7.

Indigo is a/an

Answer»

ORGANIC dye
Detergent
Organic polymer
Pesticide

Answer :A
Discussion
8.

Indigo belongs to the class of

Answer»

MORDANT dye
Vat dye
Direct dye
Disperse dye

Answer :B
Discussion
9.

Indigestible carbohydrate, whichis also a constituent of our diet, is

Answer»

Cellulose
Galactose
MALTOSE
Starch

SOLUTION :We can't digest cellulose which is a POLYSACCHARIDE
Discussion
10.

Indigestion, uncler are caused due to excess of

Answer»

`H^(2)SO_(4)`
`HNO_(3)`
HCI
`NaHCO_(3)`

ANSWER :C
Discussion
11.

Indicator electrode is

Answer»

SHE
Calomel ELECTRODE
`Sn^(4+) |Sn^(2+)` electrode
`Zn|ZnSO_(4)` electrode

Solution :The electrode which potential depend on Conc.of solution is called INDICATOR electrode .
Discussion
12.

Indicator electrode is :

Answer»

SHE
Calomel ELECTRODE
`AG// Ag` CI electrode
Quinhydrone electrode

Answer :D
Discussion
13.

Indicates the most probable sites for ArSE reactions.

Answer»

<P>



Solution :(A)p-at ring -2
(B)p-at ring -1
(C )p - at ring -2
(D) o-wrt `NHCOCH_3`
Discussion
14.

Indicate wrong electron-migration :

Answer»


SOLUTION :N//A
Discussion
15.

Indicate which of the following is correct

Answer»

Increasing the concentration of nucleophile favors an `SN^(1)` reaction over `SN^(2)` reaction
ethyl IODIDE is more reaction than ethyl choride in an `SN^(2)` reaction
In an `SN^(2)` reaction, a greater YIELD of the product with retained CONFIGURATION is obtained
An `SN^(2)` reaction is two step reaction

Answer :B
Discussion
16.

Indicate whether each of the following compound is 'E' or 'Z'.

Answer»


ANSWER :(i) = E, (II) =E, (III) = E, (iv) = Z
Discussion
17.

Indicate whether each of the following pairs are identical, or?

Answer»

`{:(I,II,III),("enantiomers","deastereomers","enantiomers"):}`
`{:(I,II,III),("edentical","enantiomers","enantiomers"):}`
`{:(I,II,III),("enantiomers","diastereomers","IDENTICAL"):}`
`{:(I,II,III),("enantiomers","identical","idenctical"):}`

Solution :
Discussion
18.

Indicate the wrongly named compound

Answer»

`underset("(4-methyl-1-pentanal)")(CH_(3)-underset(CH_(3))underset(|)(C)H-CH_(2)-CH_(2)-CHO)`
`underset("(4-methyl-2-pentyne-1-oic ACID)")(CH_(3)-underset(CH_(3))underset(|)(C)H-C-=C-COOH)`
`underset("(2-methyl-1-pentanoic acid)")(CH_(3)CH_(2)CH_(2)-underset(CH_(3))underset(|)(C)H-COOH)`
`underset("(3-hexen-5-one)")(CH_(3)-CH_(2)-CH=CH-OVERSET(O)overset(||)(C)-CH_(3))`

Solution :`underset("(3-hexen-5-one)")(CH_(3)-CH_(2)-CH=CH-overset(O)overset(||)(C)-CH_(3))`
Discussion
19.

Indicate the wrong statement :-

Answer»

Generally a sigma BOND has free ROTATION along the axis
p-orbitals always have only SIDEWAY overlapping
s-orbital never form `pi`-bond
There can not be more than ONE sigma bond between two atoms

Answer :B
Discussion
20.

Indicate the types of isomerism exhibited by the following complexes : (i) [Co(NH_3)_5(NO_2)]^(2+) (ii) [Co(en)_3]Cl_3 (en= ethylene diamine) (iii) [Pt(NH_3)_2Cl_2]

Answer»

SOLUTION :Linkage isomerism is the EXISTENCE of co-ordination compounds HAT have the same composition differing with the connectivity of metal to a ligand.
(ii)
(iii) Geometrical Isomerism : This TYPE of isomerism arises in heteroleptic COMPELXES due to different possible geometric arrangements of the ligands.
Discussion
21.

Indicate the uses of Benzoic acid.

Answer»

SOLUTION :Benzoic acid is used
(i) as FOOD preservative either in the pure form or in the form of sodium BENZOATE (ii) in MEDICINE as an urinary antiseptic (iii) for MANUFACTURE of dyes
Discussion
22.

Indicate the types of isomerism exhibited by the following complexes and draw the structures of these isomers : (i) K[Cr(H_(2)O)_(2)(C_(2)O_(4))_(2)] (ii) [Co(en)_(3)]Cl_(3) (iii) [Co(NH_(3))_(5)(NO_(2))](NO_(3))_(2) (iv) [Pt(NH_(3))(H_(2)O)Cl_(2)]

Answer»

Solution :
(ii) Both OPTICAL isomers EXIST
(iii) Ionization isomers : `[Co(NH_(3))_(5)(NO_(2))](NO_(3))_(2),[Co(NH_(3))_(5)(NO_(3))](NO_(2))(NO_(3))`
Linkage isomers : `[Co(NH_(3))_(5)(NO_(2))](NO_(3))_(2),[Co(NH_(3))_(5)(ONO)](NO_(3))_(2)`
(iv)

Octahedral COMPLEXES of the TYPE `[MA_(5)B]` do not show geometrical and optical isomerism.
Discussion
23.

Indicate the types of isomerism exhibited by the following complexes and draw the structures of these isomers (i) K[Cr(H_(2)O)_(2)(C_(2)O_(4))_(2)] (ii) [Co(NH_(3))_(5)(NO_(2))](NO_(3))_(2) (iii) [Pt(NH_(3))(H_(2)O) CI_(2)]

Answer»

Solution : Both geometrical isomers (cis and trans),

(ii). IONIZATION isomers`[CO(NH_(3))_(5)](NO_(2)] (NO_(3))_(2) [CO(NH_(3))_(5)(NO_(3))] (NO_(2)) (NO_(3))`
. LINKAGE isomers
`[VO(NH_(3))_(5)(NO_(2))] (NO_(3))_(2), [CO(NH_(3))_(5)(ONO)] (NO_(3))_(2)(NO_(3))2`
(iii) Geometrical isomers (cis and trans)`
` (##FIITJEEE_CHE_MB_05_C02_SLV_026_S02.png" width="80%">
Discussion
24.

Indicate the types of isomerism exhibited by the following complexes and draw the structrues for these isomers : (i) K[Cr(H_2O)_(2)(C_2O_4)_(2)] "" (ii) [CO(en)_(3)]Cl_3 "" (iii) [Pt(NH_3)(H_2O)Cl_2]

Answer»

SOLUTION :
Discussion
25.

Indicate the types of isomerism exhibited by the following complexes and draw the structures for these isomers : [Co(NH_(3))_(5)(NO_(2))](NO_(3))_(2)

Answer»

Solution :Ionisation isomers of the COMPOUND are given below :
`[Co(NH_(3))_(5)(NO_(2))](NO_(3))_(2),[Co(NH_(3))_(5)(NO_(3))](NO_(2))(NO_(3))`
Linkage isomers of the compound are SHOWN below :
`(Co(NH_(3))_(5)(NO_(2))](NO_(3))_(2), [Co(NH_(3))_(5)(ONO)](NO_(3))_(2)`
OCTAHEDRAL complexes of the TYPE `[MA_(5)B]` do not show geometrical and optical ISOMERISM.
Discussion
26.

Indicate the types of isomerism exhibited by the following complexes and draw the structures for these isomers : K[Cr(H_(2)O)_(2)(C_(2)O_(4))_(2)]

Answer»

Solution :It exhibits geometrical as well as optical isomerism. Geometrical ISOMERS are given below :

Optical isomers of CIS- form are SHOWN below :
Discussion
27.

Indicate the types of isomerism exhibited by the following complexes and draw the structures for these isomers : [Co(en)_(3)]Cl_(3)

Answer»

SOLUTION : Both OPTICAL ISOMERS EXIST
Discussion
28.

Indicate the types of isomerism exhibited by the following complexes and draw the structures for these isomers : (i) K[Cr(H_(2)O)_(2)(C_(2)O_(4))_(2)] (ii) [CO(en)_(3)]Cl_(3) (iii)[CO(NH_(3))_(5)(NO_(2))](NO_(3))_(2) (iv) [Pt(NH_(3))(H_(2)O)Cl_(2)]

Answer»

Solution :`(i)` Both geometrical (cis,trans) and optical ISOMER for cis-form.

`(ii)` Two optical isomers can EXIST.

`(III)` Linkage isomers `[Co(NH_(3))_(5)ONO](NO_(3))_(2)` and `[Co(NH_(3))_(5)NO_(2)](NO_(3))_(2)`.
`(iv)` Geometrical isomerism.
Discussion
29.

Indicate the types of isomerism exhibited by the following complexes and draw the structures for these isomers : [Pt(NH_(3))(H_(2)O)Cl_(2)]

Answer»

SOLUTION :It EXISTS as a PAIR of GEOMETRICAL ISOMERS :
Discussion
30.

Indicate the types of isomerism exhibited by the following complexes and draw the structures for these isomers: (i). K[Cr(H_2O)_2C_2O_3)_2] (ii). [Co(en)_3]Cl_3 (iii). [Co(NH_3)_5(NO_2)](NO_3)_2 (iv). Pt[(NH_3)(H_2O)Cl_2]

Answer»

Solution :(i). `K[Cr(H_2O)_2(C_2O_4)_2]` is of `[M(AA)_2b_2]^(n+-)` type it SHOWS both geometrical isomers (cis and TRANS)
(ii). `[Co(EN)_3Cl_3` is of `[M(AA)_3]^(n+-)` type it shows optical isomers (d- and l-) of cis.
(iii). There are 2 ionisation and 2 linkage isomers. Compounds of `[Ma_5b]^(n+-)` type NEITHER shows geometrical nor optical isomers. Ionisation isomers:
`[Co(NH_3)_5(NO_2)](NO_3)_2`
`[Co(NH_3)_5(NO_3)](NO_3)(NO_2)`
Linkage isomers:
`[Co(NH_3)_5(NO_2)](NO_3)_2,[Co(NH_3)_5(ONO)](NO_3)_2`
(iv). `Pt[(NH_3)(H_2O)Cl_2]` is of `[Ma_2Bc]^(n+-)` type It shows geometrical isomers (cis and trans)
Discussion
31.

Indicate the type of isomerisms exhibited by the complex [Co(NH_3)_5 (NO_2)] (NO_3)_2 (At. No. Co = 27).

Answer»

Solution :Linkage and CO-ordination isomerism.
A pair of OPTICAL isomers

It can ALSO show linkage isomerism.
`[Co (NH_3)_5 (NO_2) ](NO_3)_2 and [Co(NH_3)_5 (ONO)] (NO_3)_2`
It can also show IONIZATION isomerism
`[Co(NH_3)_5 (NO_2)] (NO_3)_2 and [Co(NH_3)_5 (NO_3)] (NO_3) (NO_2)`
Discussion
32.

Indicate the type of isomerism exhibited by the following complexe and draw the structures for this isomer.[Pt(NH_3)(H_2O)Cl_2]

Answer»

SOLUTION :
Discussion
33.

Indicate the type of isomerism exhibited by the following complexes and draw the structures for these isomers.[Co(en)_3]Cl_3

Answer»

SOLUTION :
Discussion
34.

Indicate the type of isomerism exhibited by the following complexes and draw the structures for these isomers.K[Cr(H_2O)_2(C_2O_4)_2]

Answer»

Solution :it can show both GEOMETRICAL and OPTICAL isomerism it exist in CIS and trans forms.the cis ISOMER shows optical isomerism.
Discussion
35.

Indicatethetemperatureatwhichcarboncan beusedasa reducing agen forFeO.

Answer»

Solution :At1073 or above , thestandardfree energyofformation`( Delta_ FG^(@) ) ` of COfrom C ismuchbelowthe standardfreeenergyofformation` (Delta_ f G ^(@)) `of FeO.Therefore, above1073 K, carboncanreduce FeOto FE.
Discussion
36.

Indicate the steps in the preparation of: (i) K_(2)Cr_(2)O_(7) from chromite ore. (ii) KMnO_(4) from pyrolusite ore.

Answer»

Solution :(i) `4FeCr_(2)O_(4) + 8Na_(2)CO_(3) + 7O_(2) RARR 8Na_(2) CrO_(4) + 2Fe_(2)O_(3) + 8CO_(2)`
`2Na_(2)CrO_(4) + 2H^(+) rarr Na_(2)Cr_(2)O_(7) + 2Na^(+) + 2H_(2)O`
`Na_(2)Cr_(2)O_(7) + 2KCl rarr K_(2)Cr_(2)O_(7) + 2NaCl`
(ii) `2MnO_(2) + 4KOH + O_(2) overset(Delta)rarr 2K_(2)MnO_(4) + 2H_(2)O`
`3MnO_(4)^(2-) + 4H^(+) rarr 2MnO_(4)^(-) + MnO_(2) + 2H_(2)O`
Discussion
37.

Indicatethe reactivity of vinylic allylic andaliphatichydrogen in cyclhexene.

Answer»

SOLUTION :
Discussion
38.

Indicate the principle behind the method used for the refining of Nickel.

Answer»

Solution :Nickel is heated in a stream of carbon monoxide forming a volatile complex, nickel tetracarbonyl
`NI +4CO overset(330-350K) (to) Ni(CO)_(4)`
The carbonyl is heated to a HIGHER TEMPERATURE to give BACK the pure metal.
`Ni (CO)_(4) overset(450-470 K)(to) Ni +4CO`.
Discussion
39.

Indicatethe principlebehindthemethodused from refiningof zinc ?

Answer»

SOLUTION :Zinc is refinedbyelectrolyticrefiningwhich is basedupon teprincipleofoxidation-reduction. In thismethod,the impure metalis madethe anode whilethecathodeconsists of astrip ofpure zinc metal. Theseelectrodesare suspendedin an electrolyticbathcontaininga solutionof`Zn SO_ 4`acidifiedwithdil. ` H_ 2 SO_ 4`.Whenelectriccurrent is passed , zincmetalionsfrom theelectrolyte solutionare deposited atthe cathodein formof pure metalwhile an equivalentamount of zinc metaldissolvefrom the anodeand goes into theelectrolyte solution as zinc metalions, i.e.,
Anode:` Zn (s)toZn^(2 +)(aq)+2 e ^(-) `
CATHODE :` Zn^( 2 +)(aq) toZn (s) `
Theimpurities ofless BASIC metals such as iron, cadmium, arsenicand antimonyusually associated withinpure zinc, HOWEVER, settledownunder the anodeas anode mud.
Discussion
40.

Indicate the principle behind the method used for the refining of zinc.

Answer»

Solution :Zinc is a low boiling metal. It can be refined by DISTILLATION. At its boiling POINT, the VAPOURS of zinc are formed which are condensed to OBTAIN pure zinc. Impurities are left in the distillation flask.
Discussion
41.

Indicate the possible type of isomerism for the following complexex and draw their isomers (i) [Co(en)_(3)][Cr(CN)_(6)] (ii) [Co(NH_(3))_(5)(NO_(2))]^(2+) (iii) [Pt(NH_(3))_(3)(NO_(2))]Cl

Answer»

Solution :`(i) [Co(en)_(3)][Cr(CN)_(6)]`-EXHIBITS COORDINATION isomerism
`(a) [Co(en)_(3)][Cr(CN)_(6)]` `(b) [Cr(en)_(3)][Co(CN)_(6)]`

`(ii) Co(NH_(3))_(5)(NO_(2))]^(2+)`-Exhibits LINKAGE isomerism
`(a) Co(NH_(3))_(5)(NO_(2))]^(2+)`-N attached `(b) Co(NH_(3))_(5)(ONO_(2))]^(2+)`- O attached

`(iii) [PT(NH_(3))_(3)(NO_(2))]Cl`- Exhibits ionisation isomerism
`(a) [Pt(NH_(3))_(3)(NO)_(2)]Cl` `(b) [Pt(NH_(3))_(3)(Cl)]NO_(2)`
Discussion
42.

Indicate the organic structure for the product expected when 2-methyl propene is heated with acetyl chloride in presence of anhydrous zinc chloride

Answer»

`CH_3-underset(CL)underset|overset(CH_3)overset|C-CH_2-CO-CH_3`
`CH_3-undersetunderset(CH_3)|oversetoverset(H)|C-CH_2-CO-CH_3`

`CH_3-oversetoverset(O)(||)C-oversetoverset(CH_3)|C=CH_2`

ANSWER :A
Discussion
43.

Indicate the organic structure for product expected when 2-methyl propene is heated with acetyl chloride in presence of anhydrous ZnCl_2.

Answer»


ANSWER :A
Discussion
44.

Indicate the incorrect statement ,

Answer»

Diethyl ether is USED a anaesthetic
Diethyl ether is used a a fuel
Diethyl ether is an INERT compound
Diethyl ether is INSOLUBLE in water

Answer :B
Discussion
45.

Indicate the incorrect statement ?

Answer»

diethyl ether is used as anaesthetic
diethyl ether is used as REFRIGERENT
diethyl EHTER is an INERT compound
diethyl ehter is soluble in WATER.

Solution :`C_6H_5-O-CH_2CH_3+Conc. Hioverset(-I^-)to`
`C_6H_5-OVERSET(+)overset(|)underset(H)underset(|)(O)-CH_2CH_3overset(Delta)toC_6H_5OH+CH_3CH_2I`
Discussion
46.

Indicate the hydbridisation and Magnetic nature of Ni(CO)_4

Answer»

`dsp^2` , DIAMAGNETIC
`sp^3` , PARAMAGNETIC
`sp^3`, Diamagnetic
`dsp^2` Paramagnetic

ANSWER :B
Discussion
47.

Indicate the correct stetement :

Answer»

`C_2H_5N^+H_3OH^-` is ACIDIC
`C_2H_5NH_2` is LESS besic than `NH_3`
`C_2H_5NH_2` is a stronger BASE than `NH_3`
`C_2H_5NH_2` forms SALTS with bases

Answer :C
Discussion
48.

Indicate the correct statements :

Answer»

Conductivity cells have cell constant values Independent of the solution filled into the cell
DC (DIRECT current) is not used for MEASURING the RESISTANCE of a solution.
Kohlrausch law is valid both for STRONG and weak electrolytes.
The k decreases but `lambda_M` and `lambda_E` increase on dilution.

Solution :cell constant =`l/A`
`K=Gsigma " " lambda_(M)=(1000K)/M,lambda_(N)=(1000K)/N`
On dilution `Gdarr K darr Mdarr Ndarr lambda_Muarr, lambda_N uarr`
Discussion
49.

Indicate the correct statement for chain growth polymers

Answer»

These POLYMERS are made by the addition of monomers
The end of a chain is REACTIVE because it is a free radical CATION or anion
Polystyrene is the example of this class
It takes place step by step

Solution :Polystyrene is an example of chain growth polymerization.
Hence CHOICE (c) is also correct.
All chain growth polymerization take place in one step and not in multiple steps.
Hence choice (a),(B) and (c) are correct while choice (d) is incorrect.
Discussion
50.

Indicate the correct order of acidic strength (first ionization ) in the following dicarboxylic acids.

Answer»

`I GT II gt III gt IV`
`II gt IV gt I gt III`
`III gt I gt IV gt II`
`IV gt II gt I gt III`

ANSWER :C
Discussion