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.

Give the structure of A in the following reaction :

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SOLUTION :
Discussion
2.

Glucose is not oxidised to gluconic acid by

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`Bra_(2)//H_(2)O`
FEHLING's SOLUTION
TOLLEN's REAGENT
Conc.`HNO_(3)`

Solution :Conc.`HNO_(3)`
Discussion
3.

Glucose is not

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hexose
a CARBOHYDRATE
an oligosaccharide
an ALDOSE

ANSWER :C
Discussion
4.

Give the structure of a compound that fits each description (There may be more than one correct answers for each). (a) A chiral primary C_(4)H_(7)N amine with no triple bonds. (b) Two secondary amines which when treated with CH_(3)I, then Ag_(2)O and heat, give propene and N, N-dimethylaniline.

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SOLUTION :
Discussion
5.

Give the structure of A, B and C In the following reactions : CH_(3)COOH overset(NH_(3))underset(Delta)(rarr)Aoverset(Br_(2)+KOH)(rarr)Boverset(CHCI_(3)+NaOH)(rarr)C

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Solution :`CH_(3)COOHoverset(NH_(3))UNDERSET(Delta)(rarr)CH_(3)CONH_(2)overset(Br_(2)+KOH)(rarr)CH_(3)NH_(2)overset(CHCI_(3)+NaOH)(rarr)CH_(3)NC`
Discussion
6.

Glucose is hydrolysed by zymase into:

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Dicarboxylic acid
Alcohol
Amino acids
Aromatic acids

Answer :C
Discussion
7.

Give the structure of A, B and C In the following reactions : CH_(3)Broverset(KCN)rarrAoverset("LiAH"_(4))(rarr)Boverset(HNO_(2))underset(273K)(rarr)C

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SOLUTION :`CH_(3)Br overset(KCN)(rarr)CH_(3)CNoverset("LIAIH"_(4))(rarr)CH_(3)CH_(2)NH_(2)overset(HNO_(2))underset(273K)(rarr)CH_(3)CH_(2)-OH`
Discussion
8.

Give the structure for the following compound . (i) diamminesilver (I) dicyanidoargentater (I) (ii) Pentaammine nitrito-kN cobalt (III) ion (iii) hexafluorido cobaltate (III) ion (iv) dichloridobis (ethylenediamine) cobalt (III) sulphate (v) Tetracarbonylnickel (0)

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Solution :`(i)` diamminesilver (I) dicyanidoargentater (I)-`[Ag(NH_(3))_(2)][Ag(CN)_(2)]`
`(ii)` Pentaammine nitrito-`kN` cobalt (III) ION `-[Co(NH_(3))_(5)NO_(2)]^(+)`
`(iii)` hexafluorido cobaltate (III) ion `-[CoF_(6)]^(3-)`
`(iv)` dichloridobis (ethylenediamine) cobalt (III) sulphate `[Co(en)_(2)Cl_(2)]SO_(4)`
`(V)` Tetracarbonylnickel (0) `-[Ni(CO)_(4)]`
Discussion
9.

Glucose is converted into ethyl alcohol by

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maltase
zymase
invertase
diastase

ANSWER :B
Discussion
10.

Glucose is an aldose . Whichone of thefollowingreactionsreactions isnot expectedwithglucose ?

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It DOESNOT FORM OXIME
It doesnot REACT withGrignard REAGENT
It doesnot formoszones
It doesnot reducetollens reagent

Answer :B
Discussion
11.

Give the structure and the IUPAC name of the lowest molecular mass aliphatic monocarboxylic acid containing a chiral carbon. Or write the structure of active valeric acid.

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SOLUTION :`CH_(3)CH_(2)-OVERSET(CH_(3))overset(|)(.^(**)C)H-COOH` (2-Methylbutanoic ACID)
Discussion
12.

Glucose is an aldose. Which one of the following reactions is not expected with glucose ?

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It dose not FORM OXIME
It does not REACT with Grigned reagent
It does not form osazones
It does not REDUCE TOLLENS reagent

Solution :It does not react with Grigned reagent
Discussion
13.

Glucose is an________and is also known as________.

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SOLUTION :ALDOHEXOSE, DEXTROSE
Discussion
14.

Glucose is an aldose. Which one of the following reactions is not expected with glucose?

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It does not FORM oxime
It does not form OSAZONES
It does not reduce TOLLENS reagent

Solution :It does not react with Grignard reagent
Discussion
15.

Give the structures and names of various amines with the formula C_(7)H_(9)N

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SOLUTION :
Discussion
16.

Glucose is an example of

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aldohexose
ketohexose
disaccharide
non-reducing sugar

Answer :A
Discussion
17.

Give the structure and IUPAC name of vanillin.

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SOLUTION :STRUCTURE of vanillum is
The IUPAC name of VANILLIN is 4hydroxy - 3- methoxybezenecarbaldehyde.
Discussion
18.

Glucose is added to one liter water to such an extent that DeltaT_(f)//k_(f) becomes equal to 1//1000, the weight of glucose added is :

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180 GM
18 gm
1.8 gm
0.18 gm

Answer :D
Discussion
19.

Glucose is an aldose sugar but it does not react with sodium hydrogen sulphite. Give reason.

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SOLUTION :The - CHO group REACTS with - OH group at C - 5 to form a cyclic HEMIACETAL.
Discussion
20.

Give the structure and IUPAC name of disaccharide, which gives the reactio given below: Given, (A) does not reduce Fehling's solution and does not mutarotate.

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Solution :(i). It does not reduce Fehling'ssolution and does not mutarotate, which suggests that hemiacetalic `OH` group at `C-1` of glucose and hemiketalic `OH` group at `C-2` of fructose are not free and are involved in glycosidic linkage.
ii. Hydeoysis by maltose suggests `alpha-`linkage and HYDROLYSIS by emulsin suggests `beta-`linkage.
ii. Hydrolysis by maltase suggests `alpha-`linkage and hydrolysis by emulsin suggests `beta-`linkage.
iii. PRODUCTS obtained after the methylation and hydrolysis of `(A)` suggest `(C-1) (OH) (alpha)` of glucose and `(C-2) (OH) (beta)` of fructose are involved in glycosidic linkage.
iv. Glucose is in puranose FORM which suggests a six-membered ring.
v. Fructose is in FURANOSE form and this suggests a five-membered ring.
All the observations suggest that `(A)` is SUCROSE.
Discussion
21.

Glucose is added to 1 litre of water to such an extent that DeltaT_(f)//K_(f) becomes equal to 1//1000. The wt. of glucose added is

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180g
18g
`1.8g`
`0.18g`

ANSWER :D
Discussion
22.

Give the structural formulae of the following : (i) potassium hexacyanoferrate (III) (ii) Chloro-bis (ethylenediamine) nitrocobalt (III) ion

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Solution :(i) `K_(3)[Fe(CN)_(6)]` (ii) `[COCL(en)_(2)(NO_(2))]^(+)`
Discussion
23.

Glucose is also known as dextrose because

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it has D-CONFIGURATION
it has L- configuration
it is dexto rotatory
it is leavo rotatory

Answer :D
Discussion
24.

Glucose is a monosaccharide which can be oxidised, reduced and acetylated. What happen when a glucose is treated with acetic anhydride

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SOLUTION :GLUCOSE PENTAACETATE is FORMED
Discussion
25.

Glucose is a monosaccharide which can be oxidised, reduced and acetylated. What happen when a glucose is treated with HI//red P.

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SOLUTION :GLUCOSE is REDUCED to n-hexane
Discussion
26.

Glucose is a monosaccharide which can be oxidised, reduced and acetylated. What happen when a glucose is treated with Br_2 water

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SOLUTION :GLUCOSE is oxidised to GLUCONIC ACID
Discussion
27.

Give the structural formulae for the simplest chiral {:("(a) alkane","(b) alkene","(c) alkyne","(d) alcohol"),("(e) aldehyde ","(f) ketone ","(g) carboxylic acid ","(h) amine"):}.

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Solution :(a) `CH_(3)CH_(2)-CH(CH_(3))CH_(2)CH_(2)CH_(3)`
(b) `CH_(3)CH_(2)-CH(CH_(3))-CH=CH_(2)`
(c ) `CH_(3)CH_(2)overset(CH_(3))overset("|")"CH"-C-=CH`
(d) `CH_(3)CH_(2)-CH(OH)CH_(3)`
(e) `CH_(3)CH_(2)-CH(CH_(3))CHO`
(f) `CH_(3)COCH(CH_(3))CH_(2)CH_(3)`
(G) `CH_(3)CH_(2)CH(CH_(3))COOH`
(h) `CH_(3)CH_(2)CH(CH_(3))NH_(2)`
Discussion
28.

Glucose is a ketohexose.TRUE/FALSE

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ANSWER :FRUCTOSE is a KETOHEXOSE.
Discussion
29.

Give the structural fomula of ethyl (3-chloro-2-methylbutanoate)

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SOLUTION :
Discussion
30.

Glucose in human blood about……..and it also known as ………. .

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SOLUTION :100mg/dl,BLOODSUGAR
Discussion
31.

Give the structural formula and name of the product of the following reaction : Phenol is treated with excess of aqueous solution of bromine.

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SOLUTION :
Discussion
32.

Glucose is

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Monosaccharide
Disaccharide
Trisaccharide
Polysaccharide

Answer :A
Discussion
33.

Glucose in blood can be quantitatively determined with

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TOLLEN reagent
Benedict solution
Alkaline iodine solution
BROMINE water

Solution :In glucose ALDEHYDIC group is present and Tollen's reagent is the TEST for aldehydes.
Discussion
34.

Give the structural formula and IUPAC name of aspirin.

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Solution :Aspirin is ACETYL salicylic acid. Its STRUCTURAL FORMULA is

IUPAC name is 2-acetoxy benzoic acid.
Discussion
35.

Glucose(HCN) Product (hydrolysis )Product (HI+ Heat) A, the compound A is ……….. .

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Heptanoicacid
2-Iodohexane
HEPTANE
Heptanol

ANSWER :A
Discussion
36.

Give the structural formua and IUPAC name of the following compounds. (i) Isopropyl amine (ii) Allyl amine (iii) Hexamehtyl diamine.

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SOLUTION :(i) Isopropyl amine:`""CH_(3)-underset(underset(..)(N)H_(2))underset(|)(CH)-CH_(3)""`Propane -2-amine
(ii) ALLYL amine: `""CH_(2)=CH-CH_(2)OVERSET(..)(N)H_(2)""` prop-2-en-1amine
(iii) Hexa methyl diamine : `""H_(2)overset(..)(N)-(CH_(2))_(6)-overset(..)(N)H_(2)""` Hexane 1,6-diamine
Discussion
37.

Give the steroselective products. When cyclopentene is treated with (a) alkaline KMnO_(4) (B) HCOOH(c) Br_(2)

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SOLUTION :
Discussion
38.

Give the structural and diastereomers of pent-1-ene.

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SOLUTION :
Structures (II) and (III) are diastereomers (GEOMETRICAL isomers.)
Discussion
39.

Give the star mark to the hydrogen which is most acidic in the following compounds: (a) CH_(3)-CH_(2)-overset(O)overset(||)C-CH_(2)-CH_(3)(b) H_(2)C=CH-CH_(2)-overset(O)overset(||)C-H (c ) CH_(3)-overset(O)overset(||)C-O-CH_(2)-CH_(3)(d) CH_(3)-overset(OH)overset(|)"CH"-overset(O)overset(||)C-OH

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Solution :(a) Hydrogen of methylene GROUP will be most acidic.
`CH_(3)-underset(**)CH_(2)-OVERSET(O)overset(||)C-underset(**)CH_(2)-CH_(3)`
(b) In this compound, allylic hydrogen will be most acidic.
`H_(2)C=CH-underset(**)CH_(2)-overset(O)overset(||)C-H`
(c ) Hydrogen of methylene group will be most acidic.
`CH_(3)-overset(O)overset(||)C-O-underset(**)CH_(2)-CH_(3)`
(d) Hydrogen of carboxylic group will be most acidic.
`CH_(3)-overset(OH)overset(|)"CH"-overset(O)overset(||)C-Ounderset(**)H`
Discussion
40.

Give the special characteristics of enzyme catalysed reactions.

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Solution :(i) Effective and efficient conversion is the special characteristic of enzyme catalysed reactions. An enzyme may transform a million molecules of reactant in a MINUTE. For eg. `2H_2O_2 to 2H_2O + O_2`
For this reaction, the ACTIVATION energy is18k cal/mole without a catalyst. With colloidal platinum as a catalyst the activation energy is 11.7kcal /mole But with the enzyme catalyst the activation energy of this reaction is less than 2kcal/ mole. (ii) Enzyme catalysis is highly specific in nature. (iii) Enzyme catalysed reaction has maximum rate at optimum temperature. The rate of enzyme catalysed reactions varies with the pH of the system. The rate is maximum at a pH called optimum pH. Enzymes can be INHIBITED i.e. POISONED. Activity of an enzyme is decreased and destroyed by a poison. The physiological action of DRUGS is related to their inhibiting action. (vi) Catalytic activity of enzymes is increased by coenzymes or activators.
Discussion
41.

Glucose has optical isomers

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8
12
16
Cannot be predicted

Answer :C
Discussion
42.

Give the sources of vitamin A and E and list the deficiency disease caused by lack of vitamin A and E in diet.

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SOLUTION :
Discussion
43.

Glucose (HCN) Product (hydrolysis)Product (HI + Heat) A, the compound A is

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Heptanoic ACID
2 - Iodohexane
HEPTANE
Heptanol

ANSWER :A
Discussion
44.

Give the sources of the enzymes, pepsin, urease and maltase.

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SOLUTION :
Discussion
45.

Glucose has functional group

Answer»

aldehydic
aldehydic and alcoholic
alcoholic
ketonic and alcoholic

Solution :`UNDERSET"GLUCOSE"({:(CH_2,-,CH,-,CH,-,CH,-,CH,-,CHO),("|",,"|",,"|",,"|",,"|",,),(OH,,OH,,OH,,OH,,OH,,):})`
`therefore` Glucose has alcohol and ALDEHYDE as functional GROUPS.
Discussion
46.

Give the source and trivial names of (i) C_(3)H_(7)COOH and (ii) HCOOH.

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SOLUTION :
Discussion
47.

Glucose has how many optical isomers?

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8
12
16
Cannot be predicted.

Answer :C
Discussion
48.

Give the significance of d^4 ions in octahedral field.

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<P>

Solution :(i) If `Delta_0 LT P`, the `4^(TH)` electron enters into one of the `e_g` orbitals giving the configuration `t_2^3 e_g^1` . Ligands from which `Delta_0 lt P` are called weak field ligands. So they form HIGH spin complexes.
(ii) If `Delta_0 gt P`, the `4^(th)` electron enters into `t_(2g)` orbitals giving the configuration `t_(2g)^4 e_g^0`. Ligands which produce this EFFECT are called strong field ligands. So they form low spin complexes.
Discussion
49.

Glucose gives the silver mirror test with ammoniacal solution of silver nitrate because it contains :

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ALDEHYDE group
Ester group
Ketone group
Amide group

Answer :A
Discussion
50.

Give the significance of a lattice point.

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Solution :A LATTICE POINT is the POSITION occupied by the costituent particles in a crystal lattice. The representation of the lattice point in a crystal DIAGRAMMATICALLY is called crystal lattice.
Discussion