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.

Differentiate between adsorption and absorption.

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Solution :DIFFERENCE between adsorption and ABSORPTION is GIVEN in the TABULAR form:
2.

Differentiate between addition and condensation polymers based on the mode of polymerisation. Give one example of each type.

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SOLUTION :
3.

Differentiate between addition and condensation polymerisation with the help of a suitable example.

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SOLUTION :DIFFERENCE between ADDITION and CONDENSATION POLYMERISATION
4.

Differentiate between a homopolymer and a copolymer. Give one example of each

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Solution :HOMOPOLYMERS: Polymers which are OBTAINED from only one type of monomers are called homopolymers. For example, polythene and POLYSTYRENE.
Copolymers: Polymers which are FORMED from TWO or more types of monomers are called copolymers. For example, Buna-S and Nylon 6, 6.
5.

Different theories have been put forward to explain the geometrical of co-ordianation compounds. Out of them , the most practical is the valence bond theory which is based upon the concept of hybridisation . According to this , the complexes with C.N.4 may be either tetrahedral (sp^(3) hybridised ) or square planar (dsp^(2) hybridised ) in nature. Similarly , in the octahedral complexes , the metal atom or ion is either paramagnetic if one or more orbitals are half-filled and diamagnetic if all are filled in nature. 5. Which is correct in the case ofcomplex ?

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<P>DIAMAGNETIC
octahedral
`ds^(2)p^(3)` hybridised
all are correct.

Answer :d
6.

Different reagents used for the identification of different functional groups. Eg. (i)Tollens reagent used for the identification of -CHO, etc. (ii)CAN used for alcohol. {:("Column-I","Column-II","Column-III"),((I)"Benzaldehyde",(i)l_2+NaOH(aq.),(P)"Yellow crystals is formed"),((II)"Butan-1-ol",(ii)AgNO_3(aq.)+NH_4OH,(Q)"White ppt is formed"),((III)"Formic ester",(iii)anhy.ZnCl_2+conc.HCl,(R)"Silver mirror is formed"),((IV)"Acetophenone",(iv)(NH_4)_2[Ce(NO_3)_6](CAN),(S)"Wine red colouration"):} The only correct combination in which the reation does not proceed through redox mechanism ?

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<P>(I),(ii),(R)
(IV),(i)(P)
(II),(iv)(S)
(III),(ii)(R)

Solution :When CAN react with R-OH there is no redox.
`C_4H_9OH+underset("CAN (a yellow solid)")((NH_4)_2[CE(NO_3)_6])to[Ce(NO_3)_5(n-C_4H_9O)]^(2-)` Wine red complex
`NH_4^+` ION present as spectators and so not partcipate.
7.

Different reagents used for the identification of different functional groups. Eg. (i)Tollens reagent used for the identification of -CHO, etc. (ii)CAN used for alcohol. {:("Column-I","Column-II","Column-III"),((I)"Benzaldehyde",(i)l_2+NaOH(aq.),(P)"Yellow crystals is formed"),((II)"Butan-1-ol",(ii)AgNO_3(aq.)+NH_4OH,(Q)"White ppt is formed"),((III)"Formic ester",(iii)anhy.ZnCl_2+conc.HCl,(R)"Silver mirror is formed"),((IV)"Acetophenone",(iv)(NH_4)_2[Ce(NO_3)_6](CAN),(S)"Wine red colouration"):} For the formation of silver mirror the only correct combination is :

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(IV),(II),(R)
(II),(ii),(R)
(III),(i),(R)
(I),(ii),(R)

Solution :`C_6H_5-CHO+AgNO_3+NH_4OHtoC_6H_5COO^(-)+underset("Silver MIRROR")(Agdarr)`
8.

Different reagents used for the identification of different functional groups. Eg. (i)Tollens reagent used for the identification of -CHO, etc. (ii)CAN used for alcohol. {:("Column-I","Column-II","Column-III"),((I)"Benzaldehyde",(i)l_2+NaOH(aq.),(P)"Yellow crystals is formed"),((II)"Butan-1-ol",(ii)AgNO_3(aq.)+NH_4OH,(Q)"White ppt is formed"),((III)"Formic ester",(iii)anhy.ZnCl_2+conc.HCl,(R)"Silver mirror is formed"),((IV)"Acetophenone",(iv)(NH_4)_2[Ce(NO_3)_6](CAN),(S)"Wine red colouration"):} For the formation of two different organic compounds the only correct combination is :

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(I),(ii),(R)
(IV),(i)(P)
(II)(iii)(Q)
(IV),(ii)(R)

SOLUTION :Acetophenorie gives halform reaction in which two different ORGANIC compouns are FORMED.
9.

Different proportions of oxygen in the various oxides of nitrogen prove the law of:

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EQUIVALENT proportion
Multiple proportion
constant proportion
Conservation of matter

Answer :B
10.

Different possible thermal decomposition pathways for peroxy esters are shown below. Match each pathway from list I with an appropriate structure from list II and select the correct answer using the code given below the list.

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SOLUTION :(P-1),(Q-3),(R-4),(S-2)`.
11.

Different proportions of oxygen in the various oxides of nitrogen, prove the law of

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reciprocal PROPORTIONS
multiple proportions
CONSTANT proportions
CONSERVATION of mass.

Answer :B
12.

DIfferent possible thermal decomposition pathways for peroxyesters are shown below. Match each pathway from peroxyesters are shown below. Match each phthway from column t I with an appropriate structure from Column II and select the correct answer using the code given below the lists.

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<P>`{:("P" , Q , R , S), ( 1 , 3, 4 , 2):}`
`{:("P" , Q , R , S), ( 2 , 4, 3 , 1):}`
`{:("P" , Q , R , S), ( 4 , 1, 2 , 3):}`
`{:("P" , Q , R , S), (3 , 2, 1 , 4):}`

Answer :A
13.

Different hydrogen in overset(a)(C )H_(3)overset(b)(C )H=overset(b)(C )H-overset(C )H_(2)-overset(d)(C )H_(2)-overset(e )(C )H(overset(f)(C )H_(3))_(2) represnted by alphalbets. Arrange them in decreasing order of reactivity towards radical substitution

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c gt a gt e gt d gt F gt B
f gt b gt a gt c gt d gt e
b gt c gt a gt f gt d gt e
a gt b gt c gt d gt e gt f

Solution :The EASE of RELEASE of hydrogen is
`3^(@) gt 2^(@) gt 1^(@)`
14.

Different possible thermal decomposition pathwasy for peroxyesters are shown below. Match each pathway from List-I with an appropriate structure from List-II and select the correct answer using the code given below the lists

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<P>`{:(A,B,C,D),(p,R,s,q):}`
`{:(A,B,C,D),(q,s,r,p):}`
`{:(A,B,C,D),(s,p,q,r):}`
`{:(A,B,C,D),(r,q,p,s):}`

SOLUTION :
15.

Different gases at the same temperature must have

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Same volume
Same pressure
Same AVERAGE KE
Same VANDER WALL's constant

Solution :`K.E. PROP T`
16.

Different allotropuc forms of sulphur differ in crystalline structure.

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ANSWER :T
17.

Different allotropic forms of sulphur differ in:

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CRYSTALLINE structure
Molecular weight
Chemical properties
Chemical structure

Answer :A
18.

Difference in density is the basis of:

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ULTRA filtration
molecular sieving
GRAVITY separation
molecular ATTRACTION.

Answer :C
19.

Difference in ._(17)Cl^(35) and ._(17)Cl^(37) is of

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ATOMIC number
Number of protons
Number of neutrons
Number of electrons

Solution :ISOTOPES differ in mass number, and hence in the number of neutrons.
20.

Difference between S and S^(2-) as S^(2-) has

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Larger radii and larger size
Smaller radii and larger size
Larger radii and small size
Smaller radii and small size

Solution :Difference between `S and S^(2-)` IMPLIES larger radii and larger size of `S^(2-)`.
As the radii of the anion is always larger than the atomic radii of its parent atom. In an anion as electron or electrons are added to the neutral atom the nuclear charge acts on more electrons so that each electron is held less TIGHTLY and thereby the electron cloud expands.
21.

Differenccebetween Globularand fibrousproteins.

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SOLUTION :
22.

Difference between diamond and graphite is due to :

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GRAPHITE combines with oxygen to FORM carbon DIOXIDE but diamond does not
The atoms in each have different masses
The crystal structure in diamond is different form that in graphite
All of these

Answer :C
23.

Differenatiate between "minerals " and " ores".

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SOLUTION :Minerals are naturally OCCURING chemical substance in the earths CRUST obtainable by mining.
The minerals from which a metal can be economically and conveniently extracted is ore.
For example, Al occurs in the earth.s crust in the form of two chemical substances BAUXITE `(Al_2O_3.2H_2O)` and clay `(Al_2O_3.2SiO_2. 2H_2O)`. These are CALLED minerals.
However, Al can be convenienthly and economicallyextracted from bauxite. Therefore, bauxite is an ore of Al.
24.

................differ in configuration at the glycosidic carbon while ............differ in configuration at any other carbon of hte carbohydrate molecule.

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SOLUTION :ANOMERS, EPIMERS
25.

Diethylenetriamine is :-

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Chelating agent
Tridentate NEUTRAL molecule
Tridentate monoanion
(1) and (2) both

Solution :`underset("diethylentriamine")(H_(2)underset( :NH_(2))underset(|)C-CH_(2)-overset(* *)NH)-CH_(2)-underset( :NH_(2))underset(|)(CH_(2))" DIEN" `
26.

Diethylenetriamine is :

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chelating agent
tridentate netural molecule
tridentatemonoanion
(a) and (B) both

Answer :B
27.

Diethylene triamine is:

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Chelating ligand
Polydentate ligand
Tridentate ligand
All of these

Solution :`H_(2)ddotN-CH_(2)-CH_(2)-ddotNH-CH_(2)-CH_(2)-ddotNH_(2)`
28.

Diethylamine reacts with nitrous acid to give :

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`(C_(2)H_(5))_(2)NH^(+)NO_(2)^(-)`
`(C_(2)H_(5))_(2)N NO`
`C_(2)H_(5)OH`
`NH_(3)` and alcohol.

Answer :B
29.

Diethyl ketone and a dimethyl ketone can be distinguished with

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TOLLEN's REAGENT
Fehling's solution
Schiffs reagent
HALOFORM test

Answer :D
30.

Diethyl ether with cold HI yields,

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`C_2H_5I`
`C_2H_5OH`
`C_2H_5I` and `C_2H_5OH`
NONE of these

Answer :C
31.

Diethyl ether will not reacts with which of the following one ?

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`H_(2)SO_(4)`
HCl
HI
`CH_(3)COOH`

SOLUTION :`CH_(3)COOH`
32.

Diethyl ether when refluxed with excess of HI gives two molecules oful((i)) . Ethers can be most commonly prepared by reaction oful ((ii)) and((III)) . The method is called((IV)) (i),(ii) , (iii)and (IV) respectively are

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ethyl IODIDE, sodium ALKOXIDE, alkyl halide, Williamson's synothesis
ethanol, alcohol, alkyl halide , substitution
methyl iodide Grignards's REAGENT, alky halide. Williamson's synthesis
ethyl iodide, phenol ehtyl iodide, esterification

ANSWER :A
33.

Diethyl ether when treated with Cl_2 in dark gives mostly

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`C_(2)H_(5)Cl`
`CH_(3)CHClOCHClCH_(3)`
`CH_(3)CHClCH_(2)OCH_(2)Cl`
`C_(2)Cl_(5)OC_(2)Cl_(5)`.

SOLUTION :`CH_(3)CH_(2)-O-CH_(2)-CH_(3) overset(Cl_(2))underset("DARK")to CH_(3)-overset(Cl)overset(|)(C)H-O-overset(Cl)overset(|)(C)H-CH_(3)`
34.

Diethyl ether reacts will excess of HI to form____________

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`C_(2)H_(5)OH` and `H_(2)O`
`C_(2)H_(5)I` and `H_(2)O`
`C_(2)H_(5)I` and `C_(2)H_(5)OH`
`C_(2)H_(5)OH` and `I_(2)`

Answer :B
35.

Diethyl ether to ethanol

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SOLUTION :Diethyl ETHER to ETHANOL :
`underset("diethyl ether")(C_(2)H_(5)-O)-C_(2)H_(5)+H_(2)Ounderset("heat, pressure")overset("dil."H_(2)SO_(4))rarrunderset("Ethanol")(2C_(2)H_(5)OH)`
36.

Diethyl ether reacts, inspite of its usual inert nature, with:

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DILUTE SULPHURIC ACID
Dilute sodium hydroxide
Boron triflouride
Metalllic sodium

Solution :Boron trifluoride being a lewis acid forms adduct with diethyl ether which is a lewis BASE.
37.

Diethyl ether on treatment with chlorine in presence of sunlight gives

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Trichlorodiethyl ether
Perchlorodiethyl ether
Trichloroacetaldehyde
NONE of these

ANSWER :B
38.

Diethyl ether on treatment with CI_2 in presence of sunlight give :

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Trichlorodiethyl ether
Perchlorodiethyl ether
Trichloracetaldehyde
1,1-dechlorodiethyl ether

Answer :B
39.

Diethyl ether on reaction with CO in specific conditions forms :

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ACETIC acid
Carbon dioxide
Ethyl propanoate
Acetyl chloride

Answer :C
40.

Diethyl ether on heating with concentrated HI gives two moles of :

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ETHANOL
iodoform
ethyl iodide
methyl iodide

Solution :N//A
41.

Diethyl ether on heating with conc.HI gives two mole of:

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Ethanol
Iodoform
Ethyl iodide
Methyl isocyanide

Answer :C
42.

Diethyl ether on heating with excess of conc. HI gives two moles of

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ethanol
1-bromo-2-butene
ethyl iodide
methyl iodide.

Solution :`C_(2)H_(5)OC_(2)H_(5) OVERSET("HI")to C_(2)H_(5)OH+ C_(2)H_(5)I`
`(C_(2)H_(5)OH+ HI to C_(2)H_(5)I)/(UNDERSET("excess")((C_(2)H_(5)OC_(2)H_(5)+ 2HI to 2C_(2)H_(5)I+ H_(2)O)))`
43.

Diethyl ether on heating with conc. HI gives two moles of

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ethanol
iodoform
ethyl iodide
methyl iodide.

Solution :`CH_3CH_2OCH_2CH_3+2HI to 2CH_3CH_2I + H_2O`
44.

Diethyl ether may behave as :

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LEWIS acid
Lewis base
Oxidising agent
Reducing agent

Answer :B
45.

Diethyl ether may be regarded as anhydride of :

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`C_2H_5COOH`
`C_2H_5OH`
`C_2H_5CHO`
`C_2H_5COOC_2H_5`

ANSWER :B
46.

Diethyl ether is soluble in :

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Water
Dilute HCI
Conc,`H_2SO_4`
Conc.KOH

Answer :C
47.

Diethyl ether is safe anesthetic agent. On administration it affect quickly to the central nerve system because

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it is more soluble in FATTY acid than WATER
it is more soluble in water than fatty acid
it is not soluble in fatty acid
it is HIGHLY inflammable

Answer :A
48.

Diethyl ether is prepared by passing vapours of ethyl alcohol over heated catalyst under high temperature and pressure. The catalyst is :

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`SiO_(2)`
CuO
`Al_(2)O_(3)`
`Ag_(2)O`

Solution :DEHYDRATION of alcohols to ETHERS is done with `AI_(2)O_(3)`
49.

Diethyl ether is prepared by passing vapours of ethyl alcohol over heated under high temperature and pressure. The catalysy is :

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`SiO_(2)`
`CUO`
`Al_2O_3`
`Ag_2O`

SOLUTION :NA
50.

Diethyl ether is not associated with which one of these isomers

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Butanoic acid
METHYL propionate
Stereoisomerism
None of these

Solution :(a) `CH_(3)CH_(2)CH_(2)COOH(C_(4)H_(8)O_(2))`
(B) `CH_(3)CH_(2)-COOCH_(3)(C_(4)H_(8)O_(2))`
Diethyl ETHER `C_(2)H_(5)-O-C_(2)H_(5)` have position isomer and not stereoisomer.