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.

Find out product Din the followingsequence of reaction .CH_(3) - CH_(2) - COOH + Na to A overset(Br_(r)//Red. P.)to B overset(NANO_(2))to C overset(H_(2)O)toD

Answer»

`CH_(3) - CH_(2) - NO_(2)`
`CH_(3)- CH_(2) - CH_(2) - NO_(2)`
`CH_(3) - OVERSET(NO_(2))overset(|)(CH)- CH_(3)`
`CH_(3) - CH_(2) - CH_(2)- NO_(2)`

Solution :`CH_(3) - CH_(2) - COOH + 2Na toCH_(3) - CH_(2) -COONa + H_(2)`
`CH_(3) - CH_(2) - COONa + Br_(2) overset("Red P") toCH_(3)- UNDERSET(Br)underset(|)(CH) - COONa + HBr`
`CH_(3) - underset(Br) underset(|)(CH) - COONa + NaNO_(2) toCH_(3) - underset(NO_(2))underset(|)(CH) - COONa`
`CH_(3) - underset(NO_(2))underset(|)(CH_(2)) - COONa + H_(2) OtoCH_(3) - CH_(2)- NO_(2)+ NaHCO_(3)`
Discussion
2.

Find out process involved in the following reaction, R-O-R+H_2O underset"under press"overset(dil. H_2SO_4, Delta)toROH + ROH

Answer»

hydrolysis
oxidation
hydration
reduction

Answer :A
Discussion
3.

Find out osmotic pressure of 12 % w/V KCl solution at 27^(@)C.

Answer»


ANSWER :73.30 ATM
Discussion
4.

Find out osmotic pressure of 0.2 M solution of glucose at 300 K.

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ANSWER :4.92 ATM
Discussion
5.

Findout number of reactions that are electrophilic aromatic substitution in nature

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SOLUTION :N//A
Discussion
6.

Find out of compounds which show mutarotation (A) Cellobiose (4-O-(beta-D-"glucopyranosyl")-D-"glucophranose) (B) Maltose (4-O-(alpha-D-"glucopyranosyl")-D-glucopyranose) (C) Lactose (4-O-(beta-D-"galactopyranosyl")-D-"glucopyranose") (D) Gentiobiose (6-O-(beta-D-"glucopyranosyl")-D-"glucopyranose") (E) Sucrose (alpha-D-"glucopyranosyl"-beta-D-"fructofuranoside") (F) Methyl alpha-D-"galactopyranoside". (G) alpha-D- allopyranose (G) alpha-D- glucopyranose (I) alpha-D- fructofuranose

Answer»


Solution :`A,B,C,D,G,H,I` show mutarotation. A SUGAR whose IUPAC NAME endsd with the suffix OSE is a REDUCING sugar and they do mutarotation
Discussion
7.

Findout numberofdimerize products obtainedby thefollowingreaction . H_(3)C-Cl+H_(3)C-CH_(2)-Cl+H_(3)C-CH_(2)-CH_(2)-CH_(2)Cl underset("(dry ether)")overset(Na)to ?

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ANSWER :5
Discussion
8.

Find out number of reactions that are electrophilic aromatic subsitution in nature.

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ANSWER :4
Discussion
9.

Find out number of compounds which are more acidic than benzoic acid, form following.

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SOLUTION :`H-overset(O)overset(||)C-OH,H_(2)C_(2)H_(4)`
Discussion
10.

Find out no of compounds that gives positive iodoform test (either in cold or hot condition) (A) H_(3)C-underset(O)underset(||)(C)-CH_(2)-CH_(3) (B) I_(3)C-underset(O)underset(||)(C)-CH_(2)-CH_(3) (C) CH_(3)-underset(OH)underset(|)(C)-CH_(2)CH_(3) (D) CH_(2) l -underset(OH)underset(|)(CH)-CH_(2)CH_(3) (E) CH_(3)CH_(2)OH

Answer»


SOLUTION :`
Discussion
11.

Find out number of chiral carbon atoms in sucrose.

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ANSWER :3
Discussion
12.

Find out number of aromatic compounds or ion from following .

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SOLUTION :
Discussion
13.

Find out number of benzylic hydrogen in

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SOLUTION :N/A
Discussion
14.

Find out no of correct statements (A) N_(2)gtN (Ist ionization Energy) (B) O_(2)gtO (Ist Ionization Energy) (C) H_(2)gtH (Ist ionization Energy) (D) N_(2)^(+)gtN_(2)^(-) (Stability) (E) O_(2)gtO (Ist Electron affinity) (G) Na_(2)CO_(3)gtLi_(2)CO_(3) (Thermal stability) (H) NO of co-ordinate bond in P_(4)O_(10) is 4 (I) No of pi bond in P_(4)O_(8) is 2

Answer»


Solution :CORRECT statements `A,C,D,G,H,I`
INCORRECT statements `B,E,F`
Discussion
15.

Find out normality of the solution prepasred by dissolving 9.8 gram H_(2)SO_(4) to 500 mL solution ?

Answer»

`4.0`
`0.8`
`0.2`
`0.4`

SOLUTION :V = 500 mL
W = 9.8 gram
M = 98 gram/mole
`E=("49 gram")/("eq. WT.")`
Normality `(N)=(1000xx W)/(E xx V)`
`= (1000xx9.8)/(49xx500)=0.4 N`
Discussion
16.

Find out mole fraction of methanol in 5.2 m solution of methanol.

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ANSWER :`0.086`
Discussion
17.

Find out no of compound which has non zero Dipole moment

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Solution :`G` & `J` have ZERO dipole moment

`A,B,C,D,E,F,H,I` have NONZERO dipole moment
Discussion
18.

Find out mole fraction of glycerine, in solution of 46 gm of glycerine and 36 gm water.

Answer»


ANSWER :`0.2`
Discussion
19.

Find out molar conductivity of AgCl at infinite dilution. Given, Lamda_(m)^(alpha)=133.4(AgNO_(3)),Lamda_(m)^(alpha)=149.9(KCl), Lamda_(m)^(alpha)=144.9" S "cm^(2)mol^(-1)(KNO_(3)).

Answer»

140 S `cm^(2)mol^(-1)`
138 S `cm^(2)mol^(-1)`
134 S `cm^(2)mol^(-1)`
132 S `cm^(2)mol^(-1)`

Solution :`Lamda_(m)^(0)(AgCl)=Lamda_(m)^(0)(AgNO_(3))+Lamda_(m)^(0)(KCl)-Lamda_(m)^(0)(KNO_(3))`
`=133.4+149.9-144.9`
=138 S `cm^(2)mol^(-1)`
Discussion
20.

Find out mlarity of solution on addition of 200 mL of water in 500 mL of 0.2 M solution.

Answer»

0.501 M
0.02847 M
0.709 M
0.1428 M

SOLUTION :Milimole `= 500xx0.2=100`
`THEREFORE M=(100)/(700)=0.1428 M`
Discussion
21.

Find out molarity of NO_(3)^(-) ions in solution when mixing 2 litre 3 M AgNO_(3) solution with 3 litre 1 M BaCl_(2) solution.

Answer»

1.2 M
0.1 M
0.5 M
0.4 M

Solution :2 litre of `3 M AgNO_(3)` solution has 3 MOLES of `AgNO_(3)`.
3 litre of `1 M BaCl_(2)` solution has 3 moles of `BaCl_(2)`.
`2AgNO_(3)+BaCl_(2)rarr Ba(NO_(3))_(2)+2AgCl`
From above reaction, it is CLEAR that 6 moles of `AgNO_(3)` is reacted with 3 moles of `BaCl_(2)` and PRODUCE 3 moles of `Ba(NO_(3))_(2)`.
So in 5 litre solution total 6 moles of `NO_(3)^(-)` ions is produced.
`therefore` Molarity of `NO_(3)^(-)` ions `= (6)/(5)=1.2`
Discussion
22.

Find out molarity of solution when 0.01 mole substance is dissolved in its 10 mL aqueous solutions.

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ANSWER :1.0 M
Discussion
23.

Find out missing compound in following reaction CO_(2) + ? underset(H_(3)O^(+)) overset("dry ether") to R - COOH

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`R-X`
`R- LI`
`R - MGX`
`R - ONa`

ANSWER :C
Discussion
24.

Find out major product of following reaction:

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No reaction

Answer :A
Discussion
25.

Find out final product of the following reactionButan-2-one + NH_(2) -OH to A overset([O])to B

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ANSWER :B
Discussion
26.

Find out maximum number of geometrical isomers theoritically possible for an actaheral complex of formula [Pt(en)(NH_(3))_(2)Cl_(2)(en)^(+)] are

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SOLUTION :For `[M(A-A)abcd]^(NPM)6` ISOMERS possible.
Discussion
27.

Find out in which option the order of reducing power is correct.

Answer»

`Cr^(3+) lt CL^(-) lt Mn^(2+) lt Cr`
`Mn^(2+) lt Cl^(-) lt Cr^(3+) lt Cr`
`Cr^(3+) lt Cl^(-) lt Cr_(2)O_(7)^(2-) lt MnO_(4)^(-)`
`Mn^(2+) lt Cr^(3+) lt Cl^(-) lt Cr`

SOLUTION :Less is the OXIDATION potential, weaker is the reducing agent. Oxidation potentials are `Cr^(3+)//Cr_(2)O_(7)^(2-)=1.33V,Cl^(-)//Cl_(2)=-1.36V,Mn^(2+)//MnO_(4)^(-)=-1.51V,Cr//Cr^(3+)=+0.74V`. Hence, ORDEROF reducing power will be `Mn^(2+)ltCl^(-)ltCr^(3+)ltCr`.
Discussion
28.

Find out final product of following sequence of reaction:

Answer»




ANSWER :C
Discussion
29.

Find out final product of following reactions:

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ANSWER :`(##GRB_CHM_ORG_HP_C05_E01_283_S01##)`
Discussion
30.

Find out final product in the following reaction. CH_(3) - overset(overset(CH_(3))(|" "))(CH) - COOH overset(LiAiH_(4)" ")(rarr)A overset("PCC")(rarr)B overset((i)NH_(2)-NH_(2))underset( (ii) KOH)(rarr) C

Answer»

`CH_(3) - overset(overset(CH_(3))(|" "))(CH) - CH= NOH`
`CH_(3) - overset(overset(CH_(3))(|" "))(CH) - CH_(2)- NH_(2)`
`CH_(3) - overset(overset(CH_(3))(|" "))(CH) - CH_(3)`
`CH_(3) - overset(overset(CH_(3))(|" "))(CH) - CH_(2) - OH`

ANSWER :C
Discussion
31.

Find out final product of following reactions:

Answer»


ANSWER :`(##GRB_CHM_ORG_HP_C05_E01_278_S01##)`
Discussion
32.

Find out final product in following reaction C_(2)H_(6) + Br_(2) overset(AlBr_(3)" ") (rarr) A overset( "KCN ") (rarr) B overset(SnCl_(2)+HCl " ")underset(H_(3)O^(+))(rarr)

Answer»

`CH_(3) - CH_(2)-CH_(3)`
`CH_(3) - CH_(2)-CHO`
`CH_(3)-CH_(2)-COOH`
`CH_(3)-CH_(2)-Cl`

ANSWER :B
Discussion
33.

Find out (F)

Answer»

`HgSO_(4).2HgO`
`HgSO_(4).3HgO`
`HgSO_(4)`
`Hg_(2)SO_(4).3HgO`

SOLUTION :
Discussion
34.

Find out (F) :

Answer»

`HgSO_(4). 2HgO`
`HgSO_(4).3HgO`
`HgSO_(4)`
`Hg_(2)SO_(4). 3HgO`

SOLUTION :
Discussion
35.

Find out (E ) :

Answer»

`S^(2-)`
`CO_(3)^(2-)`
`S_(2)O_(3)^(2-)`
`SO_(4)^(2-)`

SOLUTION :
Discussion
36.

Find out (E )

Answer»

`S^(2-)`
`CO_(3)^(2-)`
`S_(2)O_(3)^(2-)`
`SO_(4)^(2-)`

SOLUTION :
Discussion
37.

Find out correct statement/s.

Answer»

All chiral centers are stereogenic centers.
All stereogenic centers are not chiral center.
A COMPOUND may be chiral withoutchiral center.
A compound will be chiral only if it has at LEAST ONE chiral center.

Answer :A::B::C
Discussion
38.

Find out crystalline allotrophic form of sulphur?

Answer»

`GAMMA-` SULPHUR
`LAMBDA-` sulphur
`ALPHA-` sulphur
milk of sulphur

Solution :`alpha-` sulphur
Discussion
39.

Find out correct statement regarding resonance energy :

Answer»

It is equal energy of RESONANCE HYBRID
It is equal to the DIFFERENCE in enregies of the most stable canonical structure and resonance hybrid
It is enerhy released by the molecule
It is rqual to the energy of LEAST stable canonical structure

Solution :N/A
Discussion
40.

Find out correct sequence of reagents for following conversion: PH-overset(O)overset("||")C-OH rarrPh-overset(O)overset("||")C-H

Answer»

`PCl_(5),CH_(3)MgBr`
`CH_(2)N_(2),NaBH_(4)`
`SOCl_(2),H_(2)//Pd,BaSO_(4)`
`CH_(3)-overset(O)overset("||")C-Cl, LiAlH_(4)`

ANSWER :C
Discussion
41.

Find out correct orders :

Answer»


(Rate of esterification)
(Rate of NUCLEOPHILIC ADDITION)

ANSWER :A::B::C
Discussion
42.

Find out correct reducing agent in following conversion. CH_3-CH_2-CH_2-COOH to CH_3-CH_2-CH_2-CH_2-OH

Answer»

`H_2+Ni`
`NaBH_4`
NAHG + `H_2O`
`LiAlH_4`

ANSWER :D
Discussion
43.

Find out 'B' in the following reaction. C_(2)H_(6) overset(Cl_(2)) to Aoverset(CH_(3)-overset(CH_(3)) overset(|)(CH)-ONa) toB

Answer»




ANSWER :B
Discussion
44.

Find out correct IUPAC name of complex compound

Answer»

Triamminetricyanidochromium(III)hexanitrito-N-irridate(III)
Pentaamminecyanidochromium(III)hexanitrito-N-irridium(III)
Hexanitrito-N-irridium(III)pentaamminecyanidochromate(II)
Pentaamminecyanidochromium(III)hexanitrito-n-irridate(III)

Solution :The correct IUPAC name of COMPLEX compound is `[Cr(NH_(3))_(5)(CN)][Ir(NO_(2))_(6)]`
Pentaamminecyanidochromium(III)hexanitrito-N-irridate(III).
Discussion
45.

Find out correct combination of 'A' :

Answer»

`C_(2)H_(5)overset(Theta)O,Cl-overset(O)overset("||")C-OC_(2)H_(5)`
`C_(2)H_(5)overset(Theta)O,CH_(3)-overset(O)overset("||")C-Cl`
`C_(2)H_(5)overset(Theta)O,CH_(3)-overset(O)overset("||")C-OC_(2)H_(5)`
`H^(oplus)//H_(2)O,CH_(3)-overset(O)overset("||")C-OC_(2)H_(5)`

Answer :A
Discussion
46.

Find out (B) in the following reaction C_3H_8+Br_2 overset(AlBr_3)to (A) overset(Aq. KOH)to (B)

Answer»

`CH_3-CH=CH_2`
`CH_3-CH_2-CH_2-OH`
`CH_3-CHOH-CH_3`
`CH_3-O-C_2H_5`

ANSWER :C
Discussion
47.

Find out anti aromatic compound among the following :-

Answer»




SOLUTION :
Discussion
48.

Find out 'A' in the followingreaction : CH_(3) - overset(NH_(2))overset(|)(CH) - CH_(3) overset(Zn + NH_(4)Cl)to ?

Answer»




ANSWER :C
Discussion
49.

Find out (A) in the given reaction sequence: (A)overset(O_3//H_2O)rarr(B)overset(Delta)rarr2CH_3COOH+CO_2

Answer»




ANSWER :C
Discussion
50.

Find out A in the following reaction CH_(3) - CH = CH_(2) - NO_(2) overset(A) to CH_(3) - CHO + CH_(3) - CH_(2) - NO_(2)

Answer»

`KMnO_(4)`
`H_(2)O^(+)`
`LiAIH_(2)`
`PC C^(4)`

Answer :B
Discussion