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.

Polymer obtained by condensation polymerisation is :

Answer»

Polythene
Teflon
PVC
Phenol FORMALDEHYDE resin

Answer :D
Discussion
2.

Polymer obtained by condensation polymerisation is:

Answer»

POLYTHENE
TEFFLON
Phenol-formaldehyde
NITRITE RUBBER

ANSWER :D
Discussion
3.

polymer obtainded by condensation polymerisation is :

Answer»

Polythene
Teflan
PVC
Phenol FORMALDEHYDE resin

Answer :D
Discussion
4.

Polymer given below is [-HN-CH_2-CONH(CH_2)_5CO]_n

Answer»

NYLON -6
Nylon -2,6
Nylon -6,6
Nylon -3,6

Answer :B
Discussion
5.

Polymer formation from monomers starts by

Answer»

CONDENSATION reaction between monomers
Co-ordination reaction between monomers
CONVERSION of MONOMER to monomer ions by protons
Hydrolysis of monomers

Answer :A
Discussion
6.

Polymer formation from monomers starts by :

Answer»

condensation REACTION between MONOMERS
coordination reaction between monomers
conversation of MONOMER to monomer IONS by protons
hydrolysis of monomers

Answer :A
Discussion
7.

Polymer fonnation from monomers starts by

Answer»

condensation reaction between monomers
coordinate reaction between monomers
conversion of MONOMER to monomer ions by protons
hydrolysis of monomers

Solution :Polymerisation STARTS either by condensation or ADDITION reactions between monomers. Condensation polymers are formed by the combination of monomers with the elimination of SIMPLE molecules. Where as theaddition polymers are formed by the addition together of the molecules of the monomer or monomers to forma large MOLECULE without elimination of any thing.
Discussion
8.

Polymer containing nitrogen is

Answer»

DACRON
Buna-s
PAN
Dextron

ANSWER :C
Discussion
9.

Polymer formation from monomers in step growth polymerisation starts by

Answer»

condensation REACTION between MONOMERS
coordination reaction between monomers
conversion of monomer to monomer ions by protons
hydrolysis of monomers.

Solution : POLYMER formation from monomers in STEP growth POLYMERISATION or condensation polymerisation starts by condensation reaction between monomers.
Discussion
10.

Polyhosphates are usedas water softening agents because they

Answer»

1. formsoluble complexeswith anionic species
2. precipitate anionic species
3. formsolublecomplexes withcationic species
4. precipitatecationic species

Solution :POLYPHOSPHATES such as sodium HEXA meta phosphate combines with CATIONS `Ca^(2)+` or `Mg^(2+)` to form soluble complexes
`2CA^(2+)+Na_(4)[Na_(4)(PO_(3_6))rarr4Na^(2+)+Na_(2)Ca_(2)(PO_(3_6))`
Discussion
11.

Polyethyleneglycols are used in the preparation of which type of detergents?

Answer»

CATIONIC detergents
Anionic detergents
Non-ionic detergents
Soaps

ANSWER :C
Discussion
12.

Polyethyleneglycols are used in the preparation of which\ type of detergents ?

Answer»

CATIONIC detergents
ANIONIC detergents
Non-ionic detergents
Soaps.

SOLUTION :POLYETHYLENE glycols are used in the PREPARATION of non-ionic detergents.
Discussion
13.

Polythyleneglycols are used in the preparation of which type of detergents ?

Answer»

Cationic detergents
ANIONIC detergents
Non-ionic detergents
Soaps.

SOLUTION :Polyethylene GLYCOLS are USED in the preparation of non-ionic detergents.
Discussion
14.

Polyethyleneglycols are used in the preparation of which type of detergents ?

Answer»

CATIONIC detergents
Anionic detergents
Non-ionic detergents
Soaps.

Answer :C
Discussion
15.

Polyethylene Glycols are used in the preparation of which type of detergents ?

Answer»

CATIONIC detergents
Anionic detergents
Non-ionic detergents
Soaps

Answer :C
Discussion
16.

Polyethylene is

Answer»

RANDOM copolymer
Homopolymer
Alternate copolymer
Crosslinked copolymer

Solution :Polyethylene is a homopolymer
`nCH_(2)=CH_(2) to (-CH_2-CH_(2)-)_(n)`
Discussion
17.

Polyethene can be prepard by CaC_(2) by the following sequence of reactions . CaC_(2) + H_(2)O to CaO + C_(2)H_(2) C_(2)H_(2) + H_(2) to C_(2)H_(4) nC_(2)H_(4)to (C_(2)H_(4))_(n) "(Polythene)" The mass in kg of polythene that can be prepared by 20 kg CaC_(2) .

Answer»

4.1 kg
8.75 kg
3.78 kg
10 kg

Answer :B
Discussion
18.

Polyethylene glycol stearate is a _______detergent

Answer»


ANSWER :non-ionic
Discussion
19.

Polyethylene glycols are used in the preparation of which type of detergent ?

Answer»

Cationic detergents
ANIONIC detergents
Non-ionic detergents
Soaps

SOLUTION :Non-ionic detergent is FORMED when stearic ACIDS reacts with polytheylene glycol.
Discussion
20.

Polyethylene glycol stearate is a

Answer»

SOAP
ANIONIC detergent
cationic detergent
non-ionic detergent

Answer :D
Discussion
21.

Polychlorinated biphenyls, PCBs, known to be dangerous environment pollutants , are a group of compounds with the general empirical formula C_12H_mCl_(10-m), where m is an integer. What is the value of m, if percentage of carbon atom in the compounds is 40 ?

Answer»


SOLUTION :% of CATION =`144/(144+m+36.5(10-m))xx100=40`
On SOLVING m=4
Discussion
22.

Polybromination takes place in which of the given cases-

Answer»




ANSWER :B::C
Discussion
23.

Polycaprolactum is

Answer»

NYLON-6
nylon -66
TERYLENE
mylor

ANSWER :A
Discussion
24.

Polyanion formation is maximum in

Answer»

NITROGEN
Oxygen
SULPHUR
Boron

ANSWER :C
Discussion
25.

Pollution can be controlled by

Answer»

Sewage treatment
Manufacturing ELECTRICALLY operated vehicles
By CHECKING ATOMIC blasts
All of the above

Answer :D
Discussion
26.

Polonium crystallizes in a simple cubic unit cell. Its atomic mass is 209 and density is 91.5 kg m^(-3). What is the edge length of its unit cell?

Answer»


ANSWER :`1.56 XX 10^(-7) CM`
Discussion
27.

Poly Beta-hydroxybutyrate-co-Beta-hydroxy valerate (PHBV) is obtained by the copolymerisation of

Answer»

2-hydroxybutanoic ACID and 3-hydroxypentanoic acid
3-hydroxybutanoic acid and 2-hydroxypentanoic acid
3-hydrocybutanoic acid and 3-hudroxypentanoic acid
3-aminobutanoic acid and 3-hudroxypentanooc acid

Answer :C
Discussion
28.

Polonium is a radioactive element. This element w discovered by

Answer»

Faraday
Lewis
Marie Curie
Fajan

Answer :C
Discussion
29.

Poly - beta- hydroxybutyrate - co - beta hydroxy valerate is an example of

Answer»

thermoplastic
BIODEGRADABLE polymer
NATURALLY OCCURRING polymer
semi - SYNTHETIC polymer

Answer :B
Discussion
30.

Polling process is used for the refining of (1) Iron (2) Copper (3) Tin (4) Lead

Answer»

1, 2
2, 3
1,4
3, 4

Answer :B
Discussion
31.

Polling process us used in the purification of

Answer»

Ge
Bi
Cu
Fe

Answer :C
Discussion
32.

Poling process is used .........

Answer»

for removal of `Fe_2O_3` from FE. 
for removal of `Al_2O_3` from AL. 
for removal of `Cu_2O` from Cu. 
for removal of ZNO from Zn. 

Solution :POLING is used to remove impurity of copper(I) OXIDE from Blister Copper.
Discussion
33.

Pollen grains suspended in water showed ........

Answer»

SOLUTION :Drownian MOVEMENT
Discussion
34.

Polling process is used :

Answer»

For the REMOVAL of `Cu_2O` from Cu
For the removal of `Al_2O_3` from Al
For the removal of `Fe_2O_3` from Fe
All the above

Answer :A
Discussion
35.

Polarisation of sigma - bond is caused by polarisation of adjacent sigma - bond is referred as-

Answer»

Mesomeric EFFECT
Electromeric effect
INDUCTIVE effect
Hyperconjagation

ANSWER :C
Discussion
36.

Polarisation of electrons in acrolein may be written as :

Answer»

`OVERSET(delta-)(CH_(2))=CH-overset(delta+)(CH)=O`
`overset(delta-)(CH_(2))=CH-overset(delta+)(CH)=O`
`overset(delta+)(CH_(2))=CH-overset(delta-)(CH)=O`
`overset(delta-)(CH_(2))=CH-overset(delta+)(CH)=O`

ANSWER :C
Discussion
37.

Polarisation of electrons in acrolein may be written as

Answer»

`OVERSET(-delta)(CH_(2))=CH-CH=O`
`overset(-delta)(CH_(2))=CH-CH=overset(+delta)(O)`
`overset(-delta)(CH_(2))=overset(+delta)(CH)-CH=O`
`overset(+delta)(CH_(2)) = CH - CH = overset(-delta)(O)`

Solution :Oxygen is highly ELECTRONEGATIVE than carbon, so it acquires partiallynegative charge and carbon ATOM acquire partially positive charge which is transferred to the last carbon atom.
Discussion
38.

Polarimeter is used to determine of compounds.

Answer»

D and L CONFIGURATION
d and l configuration
R and S configuration
Both D and L as WEL as d & l configuration

ANSWER :B
Discussion
39.

Polar covalent molecules exhibit dipole moment. Dipole moment is equal to the product of charge separation , q and the bond length d for the bond. Unit of dipole moment is debye. One debye is equal to 10^(-18) esu cm. Dipole moments is a vector quantity. It has both magnitude and direction. Hence,dipole moment of a molecule depends upon the relative orientation of the bond dipoles, but not on thepolarity of bonds alone. A symmetrical structure shows zero dipole moment. Thus, dipole moment helps to predict the geometry of a molecules. Dipole moment values can be distinguish between cis- and trans- isomers, ortho, meta and pare-forms of asubstance, etc. Q. mu of the AX_(4) type of molecule is zero. The geometry of it can be :

Answer»

tetrahedral
square planar
A or B
None of these

Answer :C
Discussion
40.

Polar covalent molecules exhibit dipole moment. Dipole moment is equal to the product of charge separation , q and the bond length d for the bond. Unit of dipole moment is debye. One debye is equal to 10^(-18) esu cm. Dipole moments is a vector quantity. It has both magnitude and direction. Hence,dipole moment of a molecule depends upon the relative orientation of the bond dipoles, but not on thepolarity of bonds alone. A symmetrical structure shows zero dipole moment. Thus, dipole moment helps to predict the geometry of a molecules. Dipole moment values can be distinguish between cis- and trans- isomers, ortho, meta and pare-forms of asubstance, etc. Q. Arrange the following compounds in increasing order of dipole moments, toluene (I), o-dichlorobenzene (II), m-dichlorobenzene (III) and p-dichlorobenzene (IV) :

Answer»

`IVltIltIIltIII`
`IltIVltIIltIII`
`IVltIltIIIltII`
`IVltIIltIltIII`

SOLUTION :
Discussion
41.

Polar solutes are _____ in non-polar solvents .

Answer»

SOLUTION :INSOLUBLE
Discussion
42.

Polar covalent molecules exhibit dipole moment. Dipole moment is equal to the product of charge separation, q and the bond length d for the bond. Unit of dipole moment is Debye. One Debye is equal to 10^(-18) esu-cm. Dipole moment is a vector quantity. It has both magnitude and direction. Hence, dipole moment of a molecule depends upon the relative orientation of the bond dipoles, but not on the polarity of bonds alone. A symmetrical structure shows zero dipole moment. Thus, dipole moment helps to predict the geometry of a molecules. Dipole moment values can be used to disinguisd between cis- and trans- isomers, ortho-, meta - and para - forms of a substance, etc. Which of thefollowing pair of species have same diple moment value?

Answer»




Both (a) and (C)

ANSWER :D
Discussion
43.

Poisonous gas 'Lewisite' is obtained by the reaction of

Answer»

`CH-=CH` and `AsCl_3`
`CH_2=CH_2` and `AsCl_3`
`CH-=CH` and `S_2Cl_2`
`CH_2=CH_2` and NOCl

Solution :`HC-=CH+AsCl_3 to UNDERSET"(LEWISITE)"underset"2-chlorovinyl dichloroarsine"(ClHC=CH As Cl_2)`
Discussion
44.

Poisonous gas present in the exhaust fumes of automobiles is :

Answer»

`C_(2)H_(2)`
`CO`
`CH_(4)`
`CO_(2)`.

Answer :B
Discussion
45.

Poisonous gas present in exhaust fumes of car is :

Answer»

`CH_4`
`C_2H_2`
CO
`CO_2`

ANSWER :C
Discussion
46.

Poison for platinum, a catalyst in contact process of H_2SO_4 is:

Answer»

S
P
As
C

Answer :C
Discussion
47.

Poison for platinum, a catalyst in Contact process is

Answer»

<P>S
P
As
C

ANSWER :C
Discussion
48.

Point out wrong statement about protems

Answer»

These are POLYMERIC macromolecules
They are present in FOOD stuff
Many of them are hormones and enzymes
They do not CONTAIN CONH group

Answer :D
Discussion
49.

Point out the wrong statement On moving horizontally from left to right across a period in the periodic table

Answer»

Metallic character decreases
Electronegativity increases
GRAM atomic VOLUME first decreases and then increases
SIZE of the ATOMS increases for normal elements

Solution :Size of elements decreases ACROSS a period.
Discussion
50.

Point out the wrong statement in relation to the structure of benzene

Answer»

It forms only one monosubstitution product
The C-C BOND distance in benzene is UNIFORMLY 1.397 Å
It is a resonance HYBRID of a number of canonical forms
It has THREE delocalised `pi`-MOLECULAR orbitals

Answer :A
Discussion