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.

Carbohydrates containing more than 10 simple units of sugar are called :

Answer»

Monosaccharides
Disaccharides
Trisaccharide
Polysaccharide

Answer :D
Discussion
2.

Carbohydrates containing an aldehydic group are called ................and those containing a keto group any other chiral carbon of the carbohydrate molecule.

Answer»

SOLUTION :ALDOSES, KETOSES
Discussion
3.

Carbohydrates are stored in the body as

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sugar
starch
Glucose
glycogen

Answer :D
Discussion
4.

Carbohydrates are used by body mainly

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for OBTAINING vitamins
As SOURCE of energy
for all its developmental needs
for building muscels

Solution :CARBOHYDRATE are RICH source of energy
Discussion
5.

Carbohydrates are represented by the general formula

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`C_x H_(2X) O_(2x+2)`
`C_x (H_2O)_x`
`C_x (H_2O)_y`
`C_x(H_2O)_(2x)`

SOLUTION : GENERAL formula of CARBOHYDRATES is `C_x (H_2O)_y`
Discussion
6.

Carbohydrates are stored in human body as

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Glucose
GLYCOGEN
Starch
Fructose

ANSWER :B
Discussion
7.

Carbohydrates are polyhydroxy aldehydes or ketones or substances which generally give these upon hydrolysis. These have been classified as mono, oligo or polysaccharides. These are all optically active since they contain number of chiral carbon atoms in their molecules. Further, the carbohydrates may be either reducing or non-reducing in nature. In disaccharides and polysaccharides, the monosaccharides are linked to each other by Glycosidic linkages. Which of the following given the same osazone ?

Answer»

GLUCOSE, Fructose
Glucose, Galactose
Maltose, Lactose
Sucrose, Fructose

Solution :Both FORM the same OSAZONE.
Discussion
8.

Carbohydrates are essential for life in both plants and animals. Name the carbohydrates that are used as storage molecules in plants and animals, also name the carbohydrates which is present in wood or in the fibre of cotton clothes.

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SOLUTION :CARBOHYDRATES are stored in animal body as GLYCOGEN. It is also KNOWN as animal starch. In plants, the carbohydrates are stored in starch. In wood or in the fibre of cotton clothes, cellulose is used.
Discussion
9.

Carbohydrates are classified on the basis of their behaviour on hydrolysis and also as reducing or non-reducing sugar. Sucrose is a …………

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Monosaccharide
Disaccharide
REDUCING sugar
Non-reducing sugar

Solution :(B) and (D)
The anomeric CARBON of glucose and fructose UNITS in sucrose are ENGAGED in GLYCOSIDIC linkage. So, it is a non-reducing sugar.
Discussion
10.

Carbohydrates are classified on the basis of their behaviour on hydrolysis and also as reducing or non -reducing sugar. Sucrose is a .............

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MONOSACCHARIDE
DISACCHARIDE
REDUCING SUGAR
non-reducing sugar

Solution :disaccharde , non -reducing.
Discussion
11.

Carbohydrates are classified into three major classes : monosaccharide, oligosaccharide and polysaccharides. What is inverted sugar ?

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SOLUTION :An equimolecular mixture of D (+) glucose and D (-) FRUCTOSE obtained by the hydrolysis SUCROSE is called inverted sugar.
Discussion
12.

Carbohydrates are essential for life in both plants and animals. Name the carbohydrates that are used as storage molecules in plants and animals, also name the carbohydrate which is present in wood or in the fibre of cotton cloth.

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Solution :Carbohydrates used as storage MOLECULE in plants in starch and in animals, it is glycogen. Cellulose is PRESENT in wood or in the FIBRE of cotton CLOTH.
Discussion
13.

Carbohydrates are classified into three major classes : monosaccharide, oligosaccharide and polysaccharides. Give two examples of polysaccharide.

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SOLUTION :STARCH , CELLULOSE
Discussion
14.

Carbohydrates are classified into monosaccharides,oligosaccharides and polysaccharides. Give an example of an oligosaccharide?

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SOLUTION :MONOSACCHARIDE- GLUCOSE, Oligosaccharide-Sucrose
Discussion
15.

Carbohydrates are classified into three major classes : monosaccharide, oligosaccharide and polysaccharides. What are polysaccharide ?

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SOLUTION :Carbohydrates which give a LARGE number of monosaccharide UNITS on hydrolysis are called polysaccharide
Discussion
16.

Carbohydrates are classified into monosaccharide, oligosaccharides and polysaccharides. What is the basic of such classification ?

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Solution :This CLASSIFICATION of carbohydrates is BASED on their HYDROLYSIS. If the CARBOHYDRATE cannot behydrolysed into simpler unit, they are CALLED monosaccharide. Carbohydrates that give 2-10 monosaccharide units on hydrolysis are called oligosaccharides. Carbohydrates that give many molecules of monosaccharide units on hydrolysis are called polysaccharides
Discussion
17.

Carbohydrates are stored in the body as :

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HYDRATES of carbon
Polyhydroxy ALDEHYDES or, ketones
Polyhydroxy acids
None

Answer :B
Discussion
18.

Carbohydrates are commonly found as starch in plant storage organ . Which of the following five properties of starch (i-v) make it useful as a storage material ? (i) easily translocated(ii) chemically non-reactive(iii)easily digested by animals(iv) osmotically inactive(v) synthesized during photosynthesis The useful properties-are:

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HYDRATES of carbon
Polyhydroxy ALDEHYDES or, ketones
Polyhydroxy acids
None

Answer :B
Discussion
19.

Carbohydrates are

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POLYHYDROXY ALDEHYDES
polyhydroxy ketones
polyhydroxy acids
both (a) and (B)

SOLUTION :both (a) and (b)
Discussion
20.

Carbohydrates.

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Solution :Carbohydrates are essential for life in both plants and ANIMALS.
(2) They are the important constituent of supporting TISSUES in plants e.g. cellulose found in wood, cotton etc.
(3) They form a major part of our food and store chemical energy in plants.
(4) They act as the major SOURCE of energy for animals and human BEINGS.
(5) Animals store glucose in the form of glycogen which is main source of energy.
(6) Carbohydrates satisfy the three basic needs, food, clothes and shelter.
Discussion
21.

Carbohydrate is treated with alpha-naphthol and conc. H_(2)SO_(4) colour developed at the junction of the two liquids is

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Blue
Violet
GREEN
Red

Solution :This is MOLISCH TEST for carbohydrate.
Discussion
22.

Carbohydrate contains

Answer»

-OH gp
-CHO gp

All

Answer :D
Discussion
23.

Carbogen is

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PURE FORM of carbon
`COCl_(2)`
MIXTURE of CO and `CO_(2)`
Mixture of `O_(2)` and `CO_(2)`

Solution :Mixture of `O_(2)` and `CO_(2)`.
Discussion
24.

Carbocation which is most stable

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`CH_(3)CH_(2)^(+)`
`CH_(3)^(+)`
`C_(6)H_(5)CH_(2)^(+)`
`CH_(3)CH_(2)CH_(2)^(+)`

SOLUTION :Due to resonance benzyl CARBONIUM ION is most stable.
Discussion
25.

Carbocation as an intermediate is likely to be formed in the reaction :

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Propene`+Cl_(2) overset(hv) rarr`2- chloropropane
Acetone `+HCN overset(""^(-)OH)rarr` acetonecyanohydrin
ETHYL bromide `+ Aq. KOH overset(Delta) rarr` ethyl alcohol
Hexane `overset("Anhy."AlCl_(3)//HCl)rarr` 2-methylpentane

Solution :`CH_(3)CH_(2)CH_(2)CH_(2)CH_(2)CH_(3) underset("Isomerisation")overset("Anhy."AlCl_(3)//HCl)rarr underset("2-Methylpentane")overset(""CH_(3))overset("|")(CH_(3)CH_(2)CH_(2)CHCH_(3))`
This involves the formation of carbocation as an intermediate.
Discussion
26.

Carbinol is the trivial name for :

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`(CH_3)_3COH`
`C_2H_5OH`
`CH_3OH`
`CH_3CH_2CHOHCH_3`

ANSWER :C
Discussion
27.

Carbinol is the trivial name for:

Answer»

`C_2H_5OH`
`CH_3OH`
`(CH_3)_3COH`
`CH_3CH_2CHOHCH_3`

ANSWER :B
Discussion
28.

Carbinol is

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`C_(2)H_(5)OH`
`CH_(3)OH`
`(CH_(3) )_(2)CHOH`
`CH_(3)CH_(2)CH(OH)CH_(3)`

Solution :Carbinol is `CH_(3)OH` (METHANOL).
Discussion
29.

Carbenes are the reactive intermediates in:

Answer»

Carbyamine reaction
ReimerTiemann reaction
Hofmann's bromamide reaction
Witting reaction

Answer :A::B::D
Discussion
30.

Carbide, which react with water to give propyne is

Answer»

`CaC_2`
SIC
`Mg_2C_3`
`Al_4C_3`

SOLUTION :`Mg_2C_3+4H_2O to CH_3C -=CH+2Mg(OH)_2`
Discussion
31.

Carbanions initiate:

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ADDITION reactions
Substitution reactions
BOTH (A) AND (B)
NONE of these

Answer :C
Discussion
32.

Carbanion contains _______ electrons in valence shell

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six
ten
eight
five

Answer :C
Discussion
33.

Carat is a measure of:

Answer»

IMPURE gold
Purity of gold
Pure gold
None

Answer :B
Discussion
34.

Caprolactum polymerises to give

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NYLON - 6
Buna - S
GLYPTAL
TEFLON

ANSWER :A
Discussion
35.

Carafully observe the given diagrams which indicates standard enthalpy of formation of different states of one mole Mg and 2 mole Cl atom and match the entries in column I and II provided.

Answer»


Solution :(A) `MG(s) RARR Mg^(+2)(g) rarr Mg^(+2) (AQ)`
`DeltaH=2360-[1110+790]`
`=460" kJ/mole"`
(B) `Cl_(2)(g) rarr 2Cl (g) rarr 2Cl^(-) (aq)`
For TWO `CL^(-) (aq) DeltaH=240-1490=-1250`
For `Cl^(-) (aq)=-1250/2 =-625" kJ/mole"`
(C) `Mg^(+2)(g) rarr Mg^(+2) (aq)`
`DeltaH=-790-1110=-1900" kJ/mole"`
(D) `MgCl_(2) rarr Mg^(+2) +2Cl^(-) (g)`
`Delta=2510" kJ/mole"`
Discussion
36.

Caprolactum on heating with water gives

Answer»

NYLON
nylon 6,6
terylene
NEOPRENE

ANSWER :A
Discussion
37.

Caprolactum is used for manufacturing

Answer»

Bakelite
NYLON -6
rubber
dacron

Solution :Nylon -6 is obtained by the POLYMERIZATION of CAPROLACTUM .
Discussion
38.

Caprolactum is a monomer of Nylon - 6 . It can be obtained from :

Answer»

CYCLOHEXANE
BENZENE
FORMALDEHYDE
ADIPIC acid

Answer :A
Discussion
39.

Caprolactum is a monomer of

Answer»

GLYPTAL
nylon-6
melamine
PTFE

Solution :nylon-6
Discussion
40.

Caprolactum can be obtained from:

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Benzaldehyde
Cyclohexane
Benzophenone
Adipic acid

Answer :B
Discussion
41.

Caprolactam polymerises to give

Answer»

terylene
teflon
glyptal
nylon-6.

Solution :Nylon-6
Discussion
42.

Caprolactam polymcriscs to give

Answer»

terylene
teflon
glyptal
Nylon-6

Answer :D
Discussion
43.

Caprolactam is used in the manufacture of

Answer»

TEFLON
TERYLENE
nylon6,6
Nylon-6

Answer :D
Discussion
44.

Caprolactam on reduction with LAH or H_(2)+Pt or Pd gives:

Answer»

a.`4`-Amino butan-`1-ol`
b.`5`-Aminopentam-`1-ol`
c.`6`-Aminohexan-`1-ol`
d.`7`-Aminoheptan-`1-ol`

SOLUTION :
HENCE, the ANSWER is `(b)`.
Discussion
45.

Caprolactam is used for the manufacture of :

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Terylene
Nylon-6,6
Nylon-6
Teflon

Solution :
Discussion
46.

Capacity of fuel cell is. . . . .

Answer»

`(DELTAG)/(DELTAS)`
`(DeltaG)/(DELTAH)`
`(DeltaS)/(DeltaG)`
`(DeltaH)/(DeltaG)`

SOLUTION :`(DeltaG)/(DeltaH)`
Discussion
47.

Ca(OH)_(2)+H_(3)PO_(4) rarr CaHPO_(4)+2H_(2)O the equivalent weight of H_(3)PO_(4) in the above reaction is

Answer»

21
27
38
49

Solution :The EQUIVALENT weight of `H_(3)PO_(4)=("molecular weight")/2`
`:'` MOLE wt of `H_(3)PO_(4)=3+31+64=98`
`:. 98/2=49`
Discussion
48.

CaOCL_2+H_2OrarrCa(OH)_2+XX+CH_3CHOrarrYY+Ca(OH)_2rarrCHCL_3What is 'Y'?

Answer»

`CH_(3)CH(OH)_(2)`
`CH_(2)Cl_(2)`
`C Cl_(3)CHO`
`C CI_(3)COCH_(3)`

Answer :C
Discussion
49.

CaOCI_(2) +H_(2)O to Ca(OH)_(2) +X X +CH_(3)CHO to Y Y +Ca(OH)_(2) to CHCH_(3) what is 'Y' ?

Answer»

`CH_(3)CH(OH)_(2)`
`CH_(2)CI_(2)`
`C CI_(2) CHO`
`C CI_(3) COCH_(3)`

Solution :N//A
Discussion
50.

CaO does not react with

Answer»

`SiO_2`
`P_4O_10`
`CO_2`
`MgO_2`

ANSWER :D
Discussion