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 of the following oxides would liberate H_(2)O_(2) on treatment with dil. H_(2)SO_(4)? ltbr?PbO_(2),Na_(2)O_(2),MnO_(2),BaO_(2),TiO_(2),CO_(2),NO_(2),SnO_(2),Ag_(2)O.

Answer»


SOLUTION :Two, i.e., `Na_(2)O_(2)` and `BaO_(2)` CONTAIN PEROXIDE linkage and hence liberate `H_(2)O_(2)`.
Discussion
2.

How many of the following oxides are acidic. PbO,SnO,CO,CO_(2),SiO_(2),PbO_(2),SnO_(2),GeO

Answer»


SOLUTION :`GeO_(2),CO_(2),SiO_(2)` are ACIDIC
Discussion
3.

How many of the following on reductive ozonolysis will give only glyoxal ? 1,3-butadiene, ethylene, acetylene, o-xylene, m-xylene, p-xylene, benzene, cyclobutadiene, cyclooctateraene

Answer»


SOLUTION :FOUR , acetylene, BENZENE, cyclobutadiene, cyclooctatetraene.
Discussion
4.

How many of the following molecule can give red precipitate when treated with ammnonical cuprouschloride. Propyne, Butyne-1, Butyne-2, Acetylene, pentyne-1, Pentyne-2 and Phenyl acetylene.

Answer»


Solution :Terminal alkynes are ACIDIC in NATURE. Hence 1, 2, 4, 5 and 7
Discussion
5.

How many of the following metals when heated in an atmosphere of N_(2)gas form nitrides ? Li , Na , K , Rb , Cs , Mg , Ca ,Sr , Ba

Answer»


SOLUTION :FIVE , Li , Mg , CA , SR , BA .
Discussion
6.

How many of the following metals dissolve in boiling alkali to produce H_(2) gas ? Cu,Ni,Zn, Be,Ag,Fe,Mn,Sn,Al

Answer»


SOLUTION :FOUR , i.e., ZN, Be, SN, AL
Discussion
7.

How many of the following metals can from peroxides Be, Mg, Ca, Sr, Ba

Answer»


SOLUTION :EXCEPT Be all other elements of IIA group elements form peroxide. The ability of formationof PEROXIDES increases down the group DUE INCREASE in size of cation which can stabilise the peroxide ion
Discussion
8.

How many of the following may produce salicylic acid on hydrolysis under appropriate conditions?

Answer»


ANSWER :4(i, II, III, V)
Discussion
9.

How many of the following is reactive towards towards grigannard reagent ?

Answer»


Solution :GENARALLY griganard REAGENT will act as base and NUCLEOPHILE ALSO
Discussion
10.

How many of the following is correct statement(s) regarding 1,2-butadiene (I) and 1,3-butadiene is/are a) I has perpendicular pi planes while II has parallel pi planes b) Both gives the same products on adding 1.0 equivalent of HBr at -80^(@) . c) I gives 2,2-dibromobutane while II gives 2,3-dibromobutane, when reacted exces of HBr at very low temperature d) Both have same length of C=C double bonds

Answer»


Solution :In cumulene , ADJACENT pi - bonds are present in PERPENDICULAR PLANE while in conjugated dienes , pi-bonds are present in parallel PLANES
Discussion
11.

How many of the following in drinking water below 30 ppm do not cause any effect on the body as per international standards of water? Pb^(2+),Hg^(2+),Mn^(2+),Cd^(2+),Cl^(-),NO_(3)^(-),SO_(4)^(2),Ca^(2+),Mg^(2+)

Answer»

5
2
3
6

Answer :A
Discussion
12.

How many of the following in dinking water below 30 ppm do not cause any effect on the body as per international standards of water? Pb^(2+), Hg^(2+), Mn^(2+), Cd^(2+), Cl^(-), NO_(3)^(-), SO_(4)^(2), Ca^(2+), Mg^(2+)

Answer»

5
2
3
6

Answer :1
Discussion
13.

How many of the following hydroxides is/are amphoteric in character? CsOH , LiOH , Ca(OH)_(2) , Be(OH)_(2) , Mg(OH)_(2) , Ba(OH)_(2) , Sr(OH)_(2) , Ba(OH)_(2) , KOH , NaOH.

Answer»


SOLUTION :ONE , `Be (OH)_(2)`
Discussion
14.

How many of the following have chiral centres

Answer»

`H_(3)C-CH=C=CH-CH_(3)`


SOLUTION :
Discussion
15.

How many of the following groups cannot participate in resonance with other suitable group : {:("a) "-COOH, "b) "-COO^(rho), "c) "-COCl, "d) "overset(oplus)(-NH_(3))), ("e) "-overset(oplus)(C)H_(2),"f) "-overset(*)(C)H_(2), "g) "overset(overset(CH_(2)=overset(oplus)(N-))(|))(CH_(3)),""):}

Answer»


SOLUTION :`-Noverset(OPLUS)H_3`
Discussion
16.

How many of the following gives green ppt.? (a) CrCI_(3)+NaOH rarr (b) CrCI_(3)+"excess" NaOH rarr (c) NiCI_(2)+"excess" NaOH rarr (d) NiCI_(2)+"excess" NH_(4)OH rarr (e) Hg_(2)^(2+) +KI rarr

Answer»


SOLUTION :(i),(II),(V)
Discussion
17.

How many of the following gases are characterized by BOTH colour and a distinctive odour? CI_(2),CH_(4),NO_(2)

Answer»


SOLUTION :`CI_(2)` (GREENISH yellow), `NO_(2)` (REDDISH BROWN)
Discussion
18.

How many of the following gaseous mixtures do not obey Dalton's law of partical pressures : H_2 + Cl_2 , NH_3 + HBr, N_2 + O_2, CO + Cl_2, NO + O_2, N_2 + Cl_2, Xe + O_2

Answer»


SOLUTION :`H_2 + Cl_2 to HCL , NH_3 + HBR to NH_4Br`
`CO + Cl_2 to COCl_2, NO + O_2 to NO_2`
Discussion
19.

How many of the following compounds will produce visible change when treated with I_(2)//NaOH

Answer»


ANSWER :6
Discussion
20.

How many of the following compounds show steroisomerism

Answer»


ANSWER :5
Discussion
21.

How many of the following compounds react with NaHCO_(3) and liberate CO_(2)(g) 1. Salicylic acid2. Pthalic acid3. Picric acid4.Resorcinol 5. Carbolic acid6.Aspirin7.Anisol8.Tarteric acid

Answer»


ANSWER :5(1,2,3,6,8)
Discussion
22.

How many of the following compounds is/are aromatic ?

Answer»


Answer :6(I, IV, v, VI, vii, X)
Discussion
23.

How many of the following compounds give CO_(2) on reaction with NaHCO_(3)

Answer»


Answer :6(I,II,iii,vi,vii,IX)
Discussion
24.

How many of the following compounds decolorise Br_(2) water solution ?

Answer»


ANSWER :5
Discussion
25.

How many of the following compounds cleave diborane symmetrically? CH_(3)NH_(2), (CH_(3))_(2)NH, (CH_(3))_(3) N, CO(CH_(3))_(2)O, NH_(3)

Answer»


ANSWER :3
Discussion
26.

How many of the following compounds are aromatic ?

Answer»


SOLUTION :
Discussion
27.

How many of the following compound are aromatic.

Answer»


SOLUTION :ACCORDING to HUCKEL's RULE
Discussion
28.

How many of the following compound have less pKa then benzoic acid :

Answer»


ANSWER :5(I,IV,V,VI,viii)
Discussion
29.

How many of the following carbanions are more stable than mythyl carbanion? CH_(3)-bar(C)H_(2), Ph-bar(C)H-Ph, Ph-underset(underset(Ph)(|))(bar(C))-Ph, Ph-bar(C)H_(2), CH_(3)-bar(C)H-CH_(3), CH_(3)-underset(underset(CH_(3))(|))(bar(C))-CH_(3)

Answer»


SOLUTION :BENZYL CARBANIONS are more stable than METHYL carbanion.
Discussion
30.

How many of the following carbocation can undergo rearrangement:

Answer»


ANSWER :7
Discussion
31.

How many of the following cannot show tautomerism ? acetophenone, acetaldehyde, cyclohexanone, acetylacetone, benzoquinone, acetone , benzaldehyde, butanone, ethyl acetoacetate.

Answer»


SOLUTION :TWO, i.e., BENZOQUINONE and BENZALDEHYDE.
Discussion
32.

How many of the following can show both tautomerism, Hyper conjugation , & Aldol condensation

Answer»


SOLUTION :COMPOUNDS 1,4,5,6 will FOLLOWS all CONDITION that were GIVEN
Discussion
33.

How many of the following can produce hydrogen gas, when react with water Na,Cl_(2),CaF_(2),Mg_(3),N_(3),CaH_(2),CaC_(2)

Answer»


Solution :`2 NA + 2H_2O to 2NAOH+ H_2`
`2Cl_2 + 2H_2O to 2HCl + O_2`
`Ca + 2H_2O to Ca(OH)_2 + H_2`
`2F_2+ 2H_2O to 4HF + O_2`
`Mg_3 N_2+ 6H_2O to 3Mg (OH)_2 + 2NH_3`
`CaH_2 +2H_2O to Ca(OH)_2 + 2H_2`
`CaC_2+2H_2O to Ca(OH)_2 + C_2H_2`
Discussion
34.

How many of the following can act as negative healist for in the decomposion of H_(2)O_(2) urca, metals. sunlight, dust particles, glass, alkali, phosporic acid, acetanilide, sodium stannate, sandis Urea, Alkali. Phosporic acid, Acetanilide, Sodium stannate.

Answer»


SOLUTION :UREA, Alkali , Phosporic acid, ACETANILIDE, Sodium stannate.
Discussion
35.

How many of the following are tranquillizers ? Valium, seconal, diphenhydramine, primaquin, luminal, veronal, ranitidine, barbituric acid, mifepristone, equanil.

Answer»


ANSWER :7
Discussion
36.

How many of the following are the lyophilic sols? Gold sol, Silver sol, geltin,, starch,gum, Fe(OH)_(3),As_(2)S_(3)

Answer»


ANSWER :A-3(GUM,STARCH,GELATIN)
Discussion
37.

How many of the following are resolvable ?

Answer»


SOLUTION :
Discussion
38.

How many of the following are non - metals B, Al, Ga, In, Tl, C, Si, Ge, Sn, Pb.

Answer»


SOLUTION :`3(B, C, SI)`
Discussion
39.

How many of the following are more acidic than HCOOH.

Answer»


ANSWER :5(I,iv,V,vi,VIII)
Discussion
40.

How many of the following are macro molecular colloids? Proteins, starch, cellulose, gold sol, sulphur sol, sodium stearate.

Answer»


ANSWER :C-3( PROTEINS, STARCH, CELLULOSE)
Discussion
41.

How many of the following are meta orienting ? -underset(O)underset(||)C-OCH_3, -underset(O)underset(||)C-OH, -underset(CH_3)underset(|)overset(CH_3)overset(|)C-CH_3, -N = O, -NO_2

Answer»


SOLUTION :`-UNDERSET(O)underset(||)C - OCH_3 , - underset(O)underset(||)C - OH , NO_2`
Discussion
42.

How many of the following are Lewisacids ?[C Cl_4 , Si F_4 , BF_4^(-), NH_4^(+), overset(* * )(C Cl_2 ) , Mg^(+2), O, HCHO]

Answer»


Solution :` "SIF"_4 , overset(* *) C Cl_2 , MG^(+2), O , HCHO` are lewis ACIDS.
Discussion
43.

How many of the following are Covalent network solids ? S_(8), Bronze, SiO_(2), Diamond, ZnSO_(4), Si, AlN, SiC, CO_(2)

Answer»


ANSWER :5
Discussion
44.

How many of the following are antihistamine drugs ? Salvarsen, streptomycin, promethazine, iproniazid, terfenadine, diclofenac sodium, bromopheniramine, lansoprazole, diphenyl hydramine.

Answer»


ANSWER :4
Discussion
45.

How many of the following are anomalous properties of lithium ? (i) Hydrated lithium ion is the largest among alkali metals . (ii) The melting and boiling points of lithium are comparatively high . (iii) Lithium directly reacts with atmospheric nitrogen on heating . (iv) Lithium chloride is the only hydrated salt , among all alkali chlorides . (v) Lithium salts shows crimson red colour in flame test . (vi) Lithium is softer than that of other alkali metals . (vii) Lithium reacts directly with carbon to form an ionic carbide .

Answer»


ANSWER :5
Discussion
46.

How many of the following are aromatic in nature.

Answer»


Solution :A,B,F,G FOLLOWS HUCKEL's RULE.
Discussion
47.

How many of the following are aerosols of liquid of gas ? Fog, clutch mist, insecticide sprays, smoke, dust.

Answer»


ANSWER :B-4(Fog, clouds mist, INSECTICIDE SPRAYS.)
Discussion
48.

Howmany of the following alkynes on treatment with dilute H_2SO_4 in presence of Hg SO_4 give a methyl ketone ? HC -= CH, CH_3C -= CH, CH_3CH_2 C -= CH, CH_3C -= C CH_3 , C_6H_5C -= CH, C_6H_5C -= C CH_3. CH_3CH_2C -= C CH_2CH_3, CH_3CH_2CH_2C -= CH, C_6H_5CH(OH)C-=CH

Answer»


Solution :These are `CH_3 C -= CH , CH_3CH_2C -= CH , CH_3 C -= C CH_3, C_6H_5C -=CH , and CH_3 Ch_2 CH_2C -= CH . ` PLEASE note that
`C_6H_5 CH (OH)C -=CH` gives
`C_6H_5CH = CH - CHO and C_6H_5C-= C CH_3`
gives `C_6H_5COCH_2CH_3 `
Discussion
49.

How many of the following alkali metals are kept on kesosene oil Li, Na, K, Rb, Cs.

Answer»


Solution :Na, K Rb and Cs are kept in KEROSENE oil while Li being lighter floats our the SURFACE an/is USUALLY keft WRAPPED in paraffen oil
Discussion
50.

How many of the followign are coloured or paramagnetic or coloured and paramagnetic both. NO_(2),Cu^(+1),O_(2),O_(3),Hg_(2)^(+2),Cd^(+2), Al,C("graphite"),Sc^(+3)

Answer»


SOLUTION :`.^(**)NO_(2)`coloured & Pramagnetic
`Cu^(+1)`Colourless
`.^(**)O_(2)`Paramagnetic
`O_(3)`Diagmagnetic
`Hg_(2)^(+2)`Colourless
`CD^(+2)`Coloureless
`.^(**)Al`Paramagnetic
`.^(**)C("GRAPHITE")`Paramagnetic
`SC^(+3)`Colourless or diamagnetic
Discussion