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.

Ce^(3+) can easily get oxidised to Ce^(4+). Give reason.

Answer»

Solution :`CE^(3+)([Xe]4f^(1)5d^(0)6s^(0))`, can easily LOSE its 4f - electron and attains the NEAREST inert gas configuration of xenon. Hence, `Ce^(3+)` can easily form `Ce^(4+)`.
Discussion
2.

Ce (Z=588) andYb (Z= 70)exhibitsstable+4and +2oxidationstatesrespectively . Thisisbecause

Answer»

`Ce^(4+)` and `YB^(2+)` ACQUIRE `f^(7)` configuration
`Ce^(4+)` and `Yb^(2+)` acquire`f^(0)` configuration
`Ce^(4+)` and `Yb^(2+)` acquire `f^(7)` and `f^(14)` configuration
`Ce^(4+)` and `Yb^(2+)` acquire `f^(0)` and `f^(14)` configuration

Answer :D
Discussion
3.

Cellulose, starch and glycogen are the polysaccharides having ____ monosaccharide unit:

Answer»

Glucose
Ribose
Fructose
Pentose

Answer :A
Discussion
4.

Ce ^(4+) is used as oxidising agent because

Answer»

it has TENDENCY to ATTAIN `+2,` O.S.
it has tendency to attain `+3,` O.S.
it has tendency to attain `+5,` O.S.
it does not gain electron

Answer :B
Discussion
5.

Cellulose in the form of plants is a food for cattles and sheeps but not for human beings. Explain.

Answer»

HUMAN body does not contain CELLULOSE hence cellulose cannot be broken into D - glucose
human SALIVA cannot break down plant cellulose in small pieces
bile juice PRESENT in cattle helps them to digest cellulose
human beings have a smaller stomach than cattle

Answer :A
Discussion
6.

CD:Fixed wall, EF:SPM, Fixed wall: allows the pressure transfer but no mass transfer. If 16 gm Helium present in ABCD chamber caluculate the length of this chamber in cm if no osmosis takes place through SPM EF. Assume 75% ionisation of K_4[Fe(CN)_6]

Answer»


Solution :`pi=iCRT , L=1+(y-1)alpha`
`pi=4xx2xx0.0821xx300 , i=1+(5-1)0.75`
For He PV=nRT , i=1+3
`piV=nRT` , i=4
2x 0.0821 x300 x 4 x100 x l x 10^(-3)=`16/4` x 0.0821 x300
`l=4/(8xx10^(-1))=40/8=5` cm
Discussion
7.

Cellulose, polyester, silk.

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SOLUTION :Polyester. It is a SYNTHETIC POLYMER WHEREAS others are natural polymer.
Discussion
8.

CdCl_2 added to AgCl crystal will introduce Schottky defect/Frenkel defect.

Answer»

SOLUTION :SCHOTTKY DEFECT
Discussion
9.

Cellulose is soluble in

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AMMONICAL curpic HYDROXIDE solution
organic solvents
water
none of these

Solution :Cellulose is SOLUBLE in ammoniacal CUPRIC hydroxide solution (Schweitzer's reagent).
Discussion
10.

Cd|Cd^(2+)||Fe^(3+)|Fe^(2+) reaction, on +ve electrode is

Answer»

`FE^(3+) +E^(-) to Fe^(2+)`
`Fe^(++)+e^(-) to Fe^(+)`
`Fe^(3+)+2E^(-) to Fe^(+)`
`Cd too Cd^(2+)+2e^(-)`

Solution :Positive electrode is CATHODE.
Discussion
11.

Cellulose is

Answer»

HYDROGEN Bonding
`BETA(1.4)` glycosidic linkage 
CELL wall MATERIAL 
vegetable matter 

Answer :A
Discussion
12.

Cd|Cd^(+2)"||"Fe^(+3), Fe^(+2)|Pt which of the following reaction occurs at the +ve electrode ?

Answer»

`Fe^(+3)+e^(-) to Fe^(+2)`
`Fe to Fe^(2+)+2e^(-)`
`Fe^(2+)+e^(-) to Fe^(+)`
`Cd to Cd^(2+)+2e^(-)`

ANSWER :A
Discussion
13.

Cellulose is polymer is

Answer»

GALACTOSE
`ALPHA`-glucose
fructose
`BETA`-glucose

Answer :D
Discussion
14.

Cd^(2+) and Cu^(2+) are seprated by (a) ___formationusing (b) ___in which (c ) is more stable then (d ) ____ . On passing H_(2)S gas (e ) ____. Is precipitate.

Answer»


Answer :a.Complex b. KCN c. `K_(3[Cu(CN)_(6)]`d.`K_(4)[CD(CN)_(6)]` E. `CdS`
Discussion
15.

ccp as same as with

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BCC
fcc
HCP
NONE of these

Solution :ccp = fcc.
Discussion
16.

Cellulose is not digestible by human beings due to the absence of a cellulose hydrolysing enzyme called

Answer»

CELLULOSE
zymase
invertase
urease.

Answer :A
Discussion
17.

CCl_4 is insoluble in water because :

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WATER is non-polar
`CCl_4` is non-polar
Water and `CCl_4 are ploar
None of the above

ANSWER :B
Discussion
18.

Cellulose is not digestible by human beings due to the absence of cellulose hydrolysing enzyme called

Answer»

CELLULOSE
ZYMASE
INVERTASE UREASE

ANSWER :A
Discussion
19.

Cellulose is a polymer of

Answer»

glucose
fructose
ribose
sucrose

Answer :A
Discussion
20.

Cellulose is a polymer of ……………….......

Answer»

GLUCOSE
SUCROSE
RIBOSE
Fructose

Solution :Glucose
Discussion
21.

"CCl"_4 + 2HF overset(SbF_3)(to)the carbon compound formed will be

Answer»

TEFLON
Pyrine
Freon -1, 2
All of these

Answer :C
Discussion
22.

Cellulose is a natural polymer of

Answer»

`alpha` - D glucose
`BETA`-D glucose
`alpha`-D-fructofuranose
MALTOSE

ANSWER :B
Discussion
23.

C Cl_4 is insoluble in water because :

Answer»

`C Cl_4` is NON-POLAR and WATER is polar
Water is non -polar and ` C Cl_4 ` is polar
Water and `C Cl_4 ` both are polar
None of these

Answer :A
Discussion
24.

"CCl"_(3)-NO_(2) can be obtained by

Answer»

`CH_(3)-NO_(2)` reaction with `PCl_(5)`
`CH_(3)-NO_(2)` reaction with `Cl_(2)` in presence ORF NAOH
`CHCl_(3)` reaction with `HNO_(3)`
`CH_(3)COOH` reacts with `HNO_(3)`

Solution :`CH_(3)-NO_(2)overset(Cl_(2)//NaOH)to" CCL"_(3)-NO_(2)`
Discussion
25.

Cellulose is a linear polymer of :

Answer»

`ALPHA` glucose
`BETA` glucose
`alpha` fructose
NONE

ANSWER :B
Discussion
26.

Cautions action of the acid to an anion in cold yields a transient, Pale-blue liquid with the evolution of brown furmes of a gas.Which of the following combination is correct for above statement.

Answer»

(I)(i)(R)
(IV)(iii)(S)
(III)(iv)(Q)
(III)(iv)(R)

Solution :`NO^(2-)+H_2SO_4(dil.)toHNO_2`
`(2HNO_2toN_2O_3+H_2O)`
Translent PALE BLUE liquid
`3HNO_2 to HNO_3 + 2NO+H_2O`
2NO+`O_2tounderset("Reddish BROWN vapour of"NO_2)(2NO_2(uarr))`
`2MnO_4^(-)+5NO_2^(-)+6H^(+)to2Mn^(+2)+3H_2O+5NO_3^(-)`
Discussion
27.

Cellulose is a condensation polymer of:

Answer»

MALTOSE
`BETA`-GLUCOSE
`ALPHA`-glucose
`beta`-fructose

Answer :B
Discussion
28.

C—CI bond of chlorobenzene in comparison C—Cl bond of methyl chloride is

Answer»

LONGER and weaker
stronger and weaker
shorter and stronger
longer and stronger

Answer :C
Discussion
29.

Causticization is a process in which :

Answer»

NAOH is MANUFACTURED by treating sodium carbonate with lime
soap is prepared by treating vegetable OILS with caustic soda
sodium carbonate is prepared by Solvay process
petroleum is treated with caustic soda before fractional distillation.

Answer :A
Discussion
30.

Caustic soda solution is an absorbent for:

Answer»

`NH_3`
`CO_2`
CO
`N_2O`

ANSWER :B
Discussion
31.

Caustic soda is:

Answer»

Efflorescent
Deliquescent
Hygroscopic
Oxidant

Answer :B
Discussion
32.

Cause of diagonal relationship is

Answer»

SIMILAR electronic configuration of the ELEMENTS
Similar e/r ratio of the elements
Same number of valency ELECTRONS in the elements
Same atomic weights of the elements

Answer :B
Discussion
33.

Cations move towards cathode and anions towards anode in both galvanic and electrolytic cells.

Answer»


SOLUTION :This DEFINES the TYPE of ION
Discussion
34.

Cations are present in the interstitial sites in

Answer»

FRENKEL defect 
Schottky defect 
Vacancy defect 
METAL deficiency defect 

Solution :Due to small size, the cations are DISLOCATED and OCCUPY interstitial SITE.
Discussion
35.

Cations are classified into varius groupon the basis oftheir behaviour againstsomereagents .The groupreagentused for the classifactionof most common cationare HCI,H_(2)S,NH_(4)OH,(NH_(4))_(2)CO_(3). Classification is based on whether a cationreacts withthese reagents by theformationof precipitates ornot .An aqucous solution which is sightly acids contains cattions Fe^(2+),Zn^(2+) and Cu^(2+). THe rengent added in excess to this solutionwould identify the separate Fe^(2+) ion in one step is

Answer»

`2M HCI`
`6M NH_(3)`
`6M NaOH`
`H_(2)S gas `

Solution :`Fe^(3+) + 3NH_(4)OH rarr Fe(OH)_(3) darr ("reddish brown") +3NH_(4)^(o+)`
`Cu^(2+) + 4NH_(3) rarr underset(("blue COLOUR soluble complex"))([Cu(NH_(3))_(4)]^(2+))`
` Zn^(2+) + 4NH_(3) rarr underset(("colourless soluble complex"))([Zn(NH_(3))_(4)]^(2+))`
Discussion
36.

Cations are classified into varius groupon the basis oftheir behaviour againstsomereagents .The groupreagentused for the classifactionof most common cationare HCI,H_(2)S,NH_(4)OH,(NH_(4))_(2)CO_(3). Classification is based on whether a cationreacts withthese reagents by theformationof precipitates ornot . Which one amongthe following paires of ions cannot beseparated by H_(2)S in the presenceofdilute hydrochloric acid ?

Answer»

`Bi^(2+),CD^(2+)`
`AI^(2+),Hg^(2+)`
`ZN^(3+),Cu^(2+)`
`Ni^(2+),Cu^(2+)`

Solution :Both `Bi^(3+) and Cd^(2+)` will be precipitate in `Bi_(2)S_(3)` (black) and `CdS` (YELLOW) by `H_(2)S` as both low VALUES of `K_(sp)` than `AI^(3+),Zn^(2+) and Ni^(2+)` (as SULPHIDES)
Discussion
37.

Cations are classified into varius groupon the basis oftheir behaviour againstsomereagents .The groupreagentused for the classifactionof most common cationare HCI,H_(2)S,NH_(4)OH,(NH_(4))_(2)CO_(3) Classification is based on whether a cationreacts withthese reagents by theformationof precipitates ornot . An aqueous solutioncontain Hg^(2+),Hg_(2)^(2+),Pb^(2+).THe addition of 2M HCI will procipitate.

Answer»

`HgCI_(2)`only
`PbCI_(2)"only"^(-)`
`PbCI_(2)` and `Hg_(3)CI_(2)`
`PbCI_(2)` and `CdCI_(2)`

Solution :`2M MCI` is group reagent for reagentfor group 1 cation `PbCI_(2)` And `HgCI_(2)` will get precipitated, is their SOLUBILITY products `(K_(sp))` are less than thatof other RADICAL
Discussion
38.

Cationic detergent salt

Answer»

quatermart AMMONIUM salt
tertiary amine
polyethylene glycol
polyacrylates

Answer :A
Discussion
39.

Cationic detergents have germicidal properties.

Answer»


ANSWER :T
Discussion
40.

Cationic detergent is used in

Answer»

TOOTH paste
household work
hair conditioners
midicinal syrups

Answer :C
Discussion
41.

Cationic complex is

Answer»

POTASSIUM ferrocyanide
Cryolite
CUPRAMMONIUM (II) sulphate
Sodium argentothiosulphate

Answer :C
Discussion
42.

Cation exchanger zeolite Na_(12)Al_(12)Si_(17)O_(58).27H_(2)O can exchange cation with which of the following in aqueous solution ?

Answer»

`Mg(HCO_(3))_(2)`
`K_(2)SO_(4)`
`CaCl_(2)`
`NH_(4)NO_(3)`

SOLUTION :Zeolites can exchange cation to release more soluble cation in AQUEOUS solution.
Discussion
43.

Cathode is made of ......... in a mercury battery:

Answer»

ZN metal
ZnO in CONTACT with steel
Steel in contact with HgO
Zn in contact with HgO

Answer :C
Discussion
44.

Catention properties of C, Si, Ge, Sn , Pb are in order

Answer»

`C GT gt Si gt GE ~~ Sn gt gt Pb`
`C LT Si lt Ge lt Sn lt Pb`
`C gt Si gt Sn gt Ge gt Pb`
NONE is correct

ANSWER :A
Discussion
45.

Cataylitc dehydrogention of methylcyclohexxane, obtained form petroleum, givesaliquid which on treatementwith chlorosulphonic acid at 370Kyileds a mixtureof two isomers(A) and (B), C_(7)H_(7)SO_(2) CL. The majorisomer (A) reacts withammonia to from (C), which on oxidationwith permangnategives compound (D) gives awell-knownsweet-ening agent. (E). The majorisomer (B) also reacts wtih ammonia to give a compound (F) which on treatment with NaClO//NaOH gives an antiseptic (G). Idntify (A) to (G).

Answer»

SOLUTION :
Discussion
46.

Catalyticreductionof watergasgives :

Answer»

Acetylene
ehtylene
ethane
METHANE

ANSWER :D
Discussion
47.

Catalytic reduction of isocyanides givesunderline(" primary amines").

Answer»

Solution :CATALYTIC REDUCTION of ISOCYANIDES gives secondary amines.
Discussion
48.

Catalytic poisoners are usually the same as:

Answer»

POISON for HUMAN body
Enzyme for human body
Vitamins for human body
None

Answer :A
Discussion
49.

Catalytic poisoners act by :

Answer»

Coagulating the catalyst
Getting adsorbed on the active centres on the surface of catalyst
Chemical COMBINATION with any ONE of the reactants
None

Answer :B
Discussion
50.

Catalytic hydrogenation of which of the following gives a product that further gives three photochemical monochlorination products (considering structural isomers only )?

Answer»




SOLUTION :
Discussion