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.

Correct the following statements by changing the underlined part of the sentence (Do not change the whole sentence) Colloidal solution of a liquid dispersed in a liquid is called ul("a gel")

Answer»

SOLUTION :an EMULSION
2.

Correct the following statements by changing the underlined part of the sentence (Do not change the whole sentence) The size of the colloidal particles is of the order of ul("0.1 nm -1 nm.")

Answer»

SOLUTION :INM - 1000 NM
3.

Correct the following statements by changing the underlined part of the sentence (Do not change the whole sentence) A colloidal solution is ul("homogeneous").

Answer»

SOLUTION :HETEROGENEOUS
4.

Correct the following statements by changing the underlined part of the sentence (Do not change the whole sentence) ul("Electro-osmosis") is the movement of the particles of colloids under the influence of electric current.

Answer»

SOLUTION :ELECTROPHORESIS
5.

Correct the following statements by changing the underlined part of the sentence (Do not change the whole sentence) ul("Coagulation") is the property of the dispersion of colloidal particles.

Answer»

SOLUTION :PEPTIZATION
6.

Correct the following statements by changing the underlined part of the sentence. Bakelite is a condensation polymer of ul("ethanol and") formaldehyde.

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SOLUTION :Bakelite is a CONDENSATION POLYMER of phenol and FORMALDEHYDE
7.

Correct the following statement by changing the underlined part of the sentence. W(tungsten) crystallises in ul("fcc structure").

Answer»

Solution :W (TUNGSTEN) CRYSTALLISES in BCC STRUCTURE.
8.

Correct the following statement by changing the underlined part of the sentence. W(tungsten) crystallises in ul("fcc structure") If the edge length is 316.5 pm.

Answer»

SOLUTION :W (TUNGSTEN) crystallises in bcc structure.
9.

Correct the following statement by changing the underlined part of the sentence. Three spheres of the first layer and three of the second layer enclose a site at the centre in a closest packing arrangement, the site is called ul("tetrahedral site").

Answer»

Solution :THREE spheres of the first layer and three of the second layer ENCLOSE a site at the centre in a closest PACKING arrangement, the site is called octahedral site.
10.

Correct the following statement by changing the underlined part of the sentence. Non-stoichiometric NaCl is ul("pink").

Answer»

SOLUTION :Non-stoichiometric NACL is YELLOW.
11.

Correct the following statement by changing the underlined part of the sentence. In bcc arrangement, the space filled by identical spheres is ul(60.4%).

Answer»

SOLUTION :In bcc ARRANGEMENT, the spacefilled by IDENTICAL spheres is 68%
12.

Correct the following statement by changing the underlined part of the sentence. In a hexagonal closest packing of identical spheres in two layers, one above the other, the coordination number of each sphere will be ul(12).

Answer»

SOLUTION :In a hexagonal closest packing of identical SPHERES in TWO layers, one above the other, the coordination number of each sphere will be 9.
13.

Correct the following statement by changing the underlined part of the sentence. In a close packed lattice, the number of ul("tetrahedral sites formed will be equal to that of the number of spheres").

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SOLUTION :In a close packed LATTICE, the number of tetrahedral SITES formed will be DOUBLE than that of the number of SPHERES.
14.

Correct the following statement by changing the underlined part of the sentence. If R is the radius of the spheres forming closest packing arrangement, then radius r of the octahedral void will be ul("0.225 R").

Answer»

Solution :IF R is the RADIUS of the spheres forming CLOSEST PACKING ARRANGEMENT, the radius r of the octahedral void will be 0.414 R.
15.

Correct the following statement by changing the underlined part of the sentence. If R is the radius of spheres forming closest packing arrangement, then radius r of the tetrahedral void will be ul(0.732R).

Answer»

Solution :If R is the radius of spheres FORMING CLOSEST PACKING arrangement, then radius of the TETRAHEDRAL VOID will be 0.225 R.
16.

Correct the following statement by changing the underlined part of the sentence. Graphite is an ul("amorphous solid").

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SOLUTION :GRAPHITE is a CRYSTALLINE SOLID.
17.

Correct the following statement by changing the underlined part of the sentence. Amorphous solids ul("have sharp melting points").

Answer»

SOLUTION :AMORPHOUS SOLIDS do not have SHARP MELTING points.
18.

Correct the following sentence and rewrite it-- On June 1977, Prime Minister Morarji Desai recommended the imposition of the emergency to GyaniZail Singh.

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Solution :On June 25TH 1975, PM INDIRA GANDHI recommended the IMPOSITION of emergency to President FAKHRUDDIN ALI AHMED.
19.

Correct the decreasing order of basic strength underset((a))overset(ϴ)(OH)""underset((b))overset(ϴ)(NH_(2))""underset((c))overset(ϴ)(HC-=C)""underset((d))overset(ϴ)(CH_(3)-CH_(2))

Answer»

`bgtagtcgtd`
`agtbgtcgtd`
`dgtbgtcgta`
`cgtbgtagtd`

SOLUTION :NA
20.

Correct the decreasing order of basic strength {:(oversetѳOH,oversetѳNH_2,HC-=oversetѳC,CH_3-oversetѳCH_2),("(a)","(b)","(c)","(d)"):}

Answer»

B GT a gt C gt d
a gt b gt c gt d
d gt b gt c gt a
c gt b gt a gt d

ANSWER :C
21.

Correct structure of Aspirin is

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ANSWER :C
22.

Correct structure of glycine at pH = 7 is :

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`H_(3)overset(o+)N-CH_(2)COO^(Θ)`
`Noverset(o+)H_(3)-CH_(2)-COOH`
`NH_(2)-CH_(2)-COOH`
`NH_(2)CH_(2)COO^(Θ)`

SOLUTION :N//A
23.

Correct structural formula of compound 5-nitro-3-methoxy-3-methylhexanolchloride is

Answer»

`{:(""NO_(2)""OCH_(3)""O),("|""|""||"),(CH_(3)-CH-CH_(2)-C-CH_(2)-C-CL),("|"),(""CH_(3)):}`
`{:(""NO_(2)" "Cl""CH_(3)),("|""|""|"),(CH_(3)-CH-CH-C-CH_(2)-CHO),("|"),(""OCH_(3)),():}`
`{:(""CH_(3)),("|"),(CH_(3)-CH_(2)-CH-CH_(2)-CH),("|""|"),(""Cl""OCH_(3)):}`
`{:(CH_(3)-CH_(2)-CH-C-CH-CH_(3)),("|""||""|"),(""Cl""O""OCH_(3)):}`

ANSWER :A
24.

Correct stereochemical relationship between reactant and product will be

Answer»

enantiomer
diastereomer
structural ISOMER
NONE of these

ANSWER :D
25.

Correct statement(s) regarding the graph I) Above 983K, Carbon can reduce any metal oxide at high temperature and itself oxidised to CO (II) In the first reaction (Formation of CO_(2) from 'C') DeltaS^(0)=0& DeltaG^(0) ramains nearly same, i.e. it is independent of temperature III)In the second reaction, (formation of CO), there is increase is entropy & DeltaS^(0)=+ve &DeltaG^(0) becomes more -ve with increase in temperature (IV)In third reaction(formation of CO_(2) from CO) there is a decrease in entropy DeltaS^(0)= -ve& DeltaG^(0) becomes less -ve with increase in temperature

Answer»

ONLYI
I,II only
I,II,III only
All

Answer :4
26.

Correct statements regarding XeO_3 & XeO_4

Answer»

Both `XeO_3, XeO_4` are EXPLOSIVE SOLIDS
Both `XeO_3, XeO_4` are HYGROSCOPIC
`XeO_3`, is more stable than `XeO_4`
Both `XeO_3 and XeO_4` are formed by `sp^3` hybridisation

Solution :a) Both are explosiveb) `XeO_3` is more stable than `XeO_4`
d) `XeO_3and XeO_4` are formed by `sp^3` hyb
27.

Correct statement(s) regarding the graph

Answer»

Curves involving the FORMATION of ZNO and CO cross each other at about 1270 K
Zinc begins to boil at 1180K, hence sudden INCREASE in the VALUE of `DeltaG^(0)`
Above 1270 K,'C' can REDUCE
All

Answer :4
28.

Correct statements regarding sucrose A) It is a reducing sugar B) It is a disaccharide with C_1-C_2 glycosidic linkage C) It posseses two types of rings D) It is dextro rotatory

Answer»

A, B, C, D
B, C, D
A, C, D
A, B, C

Answer :B
29.

Correct statements regarding F-centres are (a) they impart magnetic propertes to the crystal (b) they impart colour to crystals (c) they increases the conductivity of crystals The correct answers are

Answer»

only B
only C
only b and c
a, b and c

ANSWER :D
30.

Correct statements in case of n-butanol and t-butanol are:

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both are having equal solubility in WATER
t-butanol is more SOLUBLE in water than n-butanol
boiling point of t-butanol is LOWER than n-butanol
boiling point of n-butanol is lower than t-butanol

Answer :B::C
31.

Correct statement(s) is/are-

Answer»

an acidified solution of `K_2Cr_2O_7` liberates iodine from KI
`K_2Cr_2O_7` is USED as a standard solution for estimation of `FE^(2+)` ions
in ACIDIC medium, M = N/6 for `K_2Cr_2O_7`
`(NH_4)2Cr_2O_7` on heating decomposes to yield `NH_3` through an ENDOTHERMIC reaction

Answer :A::B::C
32.

Correct statement(s) in cases of n-butanol and t-butanol is (are)

Answer»

both are having EQUAL solubility in water
t-butanol is more SOLUBLE in water than n-butanol
BOILING point of t-butanol is lower than n-butanol
boiling point of n-butanol is lower than t-butanol.

Solution :`"Boiling point" prop (1)/(" Branching")`
`"Solubility" prop "Branching"`
33.

Correct statements from the graph I) Above 1073 K,DeltaG^(0) for the formation of F_(2)O_(3) is less negative than DeltaG^(0) for the formation of CO from carbon II) Above 1073K, Carbon can reduce Fe_(2)O_(3) III) Below 1073K, CO can reduce Fe_(2)O_(3) IV) In blast furnance, reduction of Fe_(2)CO_(3) occurs in different temperature ranges with below 1073K by CO (or) above 1073 K by carbon

Answer»

ONLYI
I,II only
I,II,III only
All

Answer :4
34.

Correct statements form the graph I) Above 1073K, DeltaG^(0) for the formation of Fe_(2)O_(3) is less negative than DeltaG^(0) for the formation of CO from carbon II) Above 1073K, Carbon can reduce Fe_(2)O_(3) III) Below 1073K, CO can reduce Fe_(2)O_(3)IV) In blast furnace, reduction of Fe_(2)O_(3) occurs in different temperature ranges with below 1073K by CO (or) above 1073K by carbon

Answer»

Only I
I, II only
I, II, III only
All

Solution :If `DeltaG=-ve` the PROCESS is SPONTANEOUS
35.

Correct statements are-

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`A+B to D,DELTAH=xkJ`. This REACTION is performed in the following two steps: (i) `A+B to C`
(ii) `CtoD`. If in step (i) `DeltaH =ykJ`, then `DeltaH=(x-y)J` in step (ii)
For a spontaneous process occuring in an isolated system `DeltaS_(sys) gt0` at equilibrium
in a spontaneous chemical reaction at CONSTANT temperature and pressure, `DeltaG=-TDeltaS_("surr")`
in a chemical reaction `DeltaH gt0 and DELTAS gt0`. The reaction attains equilibrium at temperature, `T_(c)`. At constant pressure and constant temperature TK the reaction will be spontaneous, if `T gt T_(c)`.

Answer :A::D
36.

Correct statements among the following is /are :-

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2ND electron gain ENTHALPY is always endothermic
ELECTRONEGATIVITY is the property of bonding of atoms
`Al_(2)O_(3)` and BEO are AMPHOTERIC oxide
None of these are incorrect

Answer :D
37.

Correct statements about transition metals are that they

Answer»

FORM complexes
SHOW variable OXIDATION STATES
show MAGNETIC properties
do not form coloured compounds

Answer :A::B::C
38.

Correct statement(s) about hydrolysis of H_(5)P_(3)O_(10) is/are:

Answer»

`H_(4)P_(2)O_(6)` can be formed by its partial HYDROLYSIS
Hydrolysis is PROCEEDED by `SN_(AE)` mechanism
Complete hydrolysis produces `H_(3)PO_(4)`
`H_(5)P_(3)O_(10)` is obtained by hydrolysis of `H_(3)P_(3)O_(9)`

Solution :
39.

Correct statement(s) is/are:

Answer»

an acidified solution of `K_(2)Cr_(2)O_(7)` liberates iodine from `KI`
`K_(2)Cr_(2)O_(7)` is used as a STANDARD solution for estimation of `Fe^(2+)` ions
in acidic medium, `M=N//6` for `K_(2)Cr_(2)O_(7)`
`(NH_(4))_(2)Cr_(2)O_(7)` on heating decomposes to yield `Cr_(2)O_(3)` through an EXOTHERMIC reaction

Solution :N//A
40.

Correct statement with respect to sucrose is

Answer»

It is dextrotatory and GIVES DEXTROROTATORY glucose and laevorotatory FRUCTOSE on hydrolysis
It is laevorotatory amd gives laevorotatory glucose and dextrorotatory fructose on hydrolysis
It is dextrorotatory amd gives LEVOROTATORY glucose amd dextrorotatory fructose on hydrolysis
It is laevorotatory and gives dextrorotatory glucose and laevorotatory fructose on hydrolysis

Answer :A
41.

Correct statement (s) about is//are

Answer»

It gives COLOURED SOLUTION with neutral `FeCl_(3)` solution.
It LIBERATES `H_(2)` GAS with `Na` metal.
It gives `+ve` Iodoform test.
It forms sweet smelling compound with alcohols.

Solution :N//A
42.

Correct statement (s) about is//are :

Answer»

librate `(3)/(2)` MOLE of `H_(2)` on treatement with `NA`.
POSITIVE test with `FeCl_(3)`
Positive test with `NaHCO_(3)`
Positive test with tollen's reagent

Solution :It has `3` acidic `H`.
43.

Correct statement (s) about dipole moment of R_(3)NO and R_(3)PO is /are:

Answer»

dipole moment of `R_(3)NOgt` dipolemoment of `R_(3)PO`
dipole moment of `R_(3)NOlt` dipolemoment of `R_(3)PO`
Experimental dipole moment of `R_(3)NOgt`Experimantal dipolemoment of `R_(3)PO`
Experimental dipole moment of `R_(3)NOlt`Experimantal dipolemoment of `R_(3)PO`

Solution :
`mu_(1)gtmu_(2)implies`due to higher difference in electronegativity of N and C than between P and C.
`mu_(1)gtmu_(2)implies` because `2p_(PI)-3d_(pi)` back bonding in the `P-O` bond decrease moment hence `(R_(3)NO)_(MU)gt(R_(3)PO)_(mu)`

Hence, experimental dipole moment of `R_(3)POLT`theoretical dipole moment of `R_(3)PO.`
44.

Correct statement regarding S_N2 reaction is A) rate = K[substrate][N bar(u)] B) stronger nucleophiles cause faster rate C) favored by aprotic solvents

Answer»

A only
A and B 
A and C
A, B and C 

ANSWER :D
45.

Correct statement regarding molecules SF_(4),CF_(4) and XeF_(4) are :

Answer»

2,0 and 1 LONE PAIRS of CENTRAL ATOM respectively
1,0 and 1 lone pairs of central atom respectively
0,0 and 2 lone pairs of central atom respectively
1,0 and 2 lone pairs of central atom respectively

Answer :D
46.

Correct statement regarding given reaction sequence is/are : "Toluene"overset(Cl_(2)//hv)rarrPunderset("Ether")overset(Mg)rarrQunderset(NH_(4)Cl)overset(CH_(3)-CHO)rarrR

Answer»



R GIVES LUCAS Test

Solution :
47.

Correct statement for a-D Glucose and B-D Glucose I) Enantiomers II) Anomers III) Isomers IV) Not Enantiomers

Answer»

All are CORRECT
Only II, III, IV are correct
II, III are correct
Only II is correct

Answer :B
48.

Correct statement about white phosphorus is:

Answer»

It IGNITES at `240^@` C
It is violet-red solid
It is not poisonous
It ignites at `30^@` C

Answer :D
49.

Correct statement about VBT is .

Answer»

Each bond is formed by MAXIMUM overlap for its maximum stability
It REPRESENTS localised electron modal of bonding.
Most of the ELECTRONS retain the same orbital localisation as in a separate atom,
All are correct.

ANSWER :D
50.

Correctstatement about lactose is/are :

Answer»

It is glycosidic linkage
It is a dissacharide
It does not REDUCES Tollen's REAGENT
On hydroilsis it GIVES TWO PRODUCT only

Solution :N//A