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.

Gas needed by plants for their growth :

Answer»

`CO_2`
`N_2`
CO
`O_2`

ANSWER :A
Discussion
2.

Give an example of artificial sweetener that could have been recommended to diabetic patients.

Answer»

Solution :Sucrolose which is trichloro derivative of sucrose COULD have been RECOMMENDED to DIABETIC patients.
Discussion
3.

Gas masks containing activated charcoal to remove poisonous gases from atmosphere acts on the principle of :

Answer»

Adsorption
Absorption
Sorption
All

Answer :A
Discussion
4.

Give an example of anomers.

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SOLUTION :`ALPHA- and BETA`-GLUCOSE are ANOMERS
Discussion
5.

…………….gas is found in volcanic eruptions.

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SOLUTION :SULPHURDIOXIDE
Discussion
6.

Gas evolved in Bhopal gas tragedy was

Answer»

methane
`CO_(2)`
methyl isocyanide
butene

Solution :Methyl isocyanide (MIC) GAS evolved in BHOPAL gas tragedy, which is a poisonous gas. It can be OBTAINED by heating methyl amine with chloroform in presence of alcoholic KOH.
`CH_(3)NH_(2)+CHCI_(3)+3KOHrarrCH_(3)-NC+3KCI+3H_(2)O`
Discussion
7.

Give an example of an ionic compound which shows Frenkel defect.

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SOLUTION :ZNS, AGCI and AGBR.
Discussion
8.

Gas equation PV = nRT is obeyed by :

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Only ISOTHERMAL process
Only adiabatic process
BOTH (A) AND (B)
NONE of these

Answer :C
Discussion
9.

Give an example of an assodicated colloid.

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SOLUTION :SOAPS and DETERGENTS.
Discussion
10.

Give an example of an amino acid containingsulphur. Write its zwitter ion form.

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Solution :`NH_(2)-underset("CYSTEINE")underset(CH_(2)SH)underset(|)"CH"-COOH` `H_(3)overset(+)N-underset("Zwitter ion")underset(CH_(2)SH)underset(|)"CH"-COO^(-)`
Discussion
11.

Gas evolved during the reaction of sodium metal on ethyl amine is :

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`N_2`
`C_2H_2`
`H_2`
`CO_2`

ANSWER :C
Discussion
12.

Give an example of ambident nucleophile reaction.

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Solution :`C_2H_5Cl + KCN RARR C_2H_5 - C EQUIV N + KCl`
`C_2H_5Cl + AGCN rarr C_2H_5 - N equiv C+ AGCL`
Discussion
13.

Gas (D)overset(HCI) to while fumes Gas(B)overset(AI)underset(Delta)to (E ) overset(H_(2)O) to gas (B) Identify (A) to (H) and explain reactions.

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Solution :(A)`(NH_(4))_(2)Cr_(2)O_(7)` (B) `N_(2)` (C )`Cr_(2)O_(3)`
(D) `NH_(3)` (E ) `AIN` (F) `CrCI_(3)`
(G) `Na_(2)CrO_(4)`
(H) `PbCrO_(4)`
Discussion
14.

Give an example of a zwitterion.

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SOLUTION :, Sulphanic ACID.
Discussion
15.

Gas (B) and (E ) are respectively :

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`H_(2)S, NH_(3)`
`H_(2)S, SO_(2)`
`SO_(2), H_(2)S`
`H_(2)S, CO_(2)`

ANSWER :B
Discussion
16.

Give an example of a weak electrolyte.

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SOLUTION : ACETIC ACID
Discussion
17.

Gas (B) on passing through CaSO_(4) solutionwill give

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BLACK ppt
yellow ppt
orange ppt
No ppt

Solution :
Discussion
18.

Give an example of a substance having cubic crystal system.

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SOLUTION :SODIUM CHLORIDE
Discussion
19.

Gas (B) on passing through cadmium acetate solution will give :

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BLACK ppt
Yellow ppt
Orange ppt
White ppt

Answer :B
Discussion
20.

Gas (A_(x)) has the ratio of cpecific heat, equal to 1.66. The value of x will be:

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ANSWER :1
Discussion
21.

Give an example of a solution containing a liquid solute in a solid solvent.

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SOLUTION :Hydrated SALTS LIKE `CuSO_(4).5 H_(2)O`.
Discussion
22.

Gas A+Na_(2)CO_(3)+H_(2)O to B+C(gas) B+Na_(2)CO_(3) to D +C"(gas)"+H_(2)O D+S overset(Delta)to E Which of the following are correct?

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A is `SO_(2)`
D is `Na_(2)SO_(3)`
C is `CO_(2)`
E is `Na_(2)S_(2)O_(3)`

Solution :`Na_(2)CO_(3)+UNDERSET((A))(2SO_(2))+H_(2)O to underset((B))(2NaHCO_(3))+underset((C ))(CO_(2))`
`NaHSO_(3)+Na_(2)CO_(3) to underset((D))(Na_(2)SO_(3))+underset((C ))(CO_(2))+H_(2)O, underset((D))(Na_(2)SO_(3))+underset("(sulphur)")(S) to underset((E ))(Na_(2)S_(2)O_(3))`
Discussion
23.

Give an example of a solid solution in which the solute is a gas.

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SOLUTION :DISSOLVED GASES in MINERALS.
Discussion
24.

Gas 'A' (Molar Mass of A =128 g "mol"^(-1)) is taken in a closed container at the initial total pressure of 1000 mm of Hg.Pressure of the gas decreases to 900 mm in 5 seconds due to the diffussion through square cross section.Another similar size container is taken in which gaseous mixture of A and B are taken.(Molar mass of the mixture 472/5) at the total pressure of 5000 mm (molar mass of B =72 g "mol"^(-1)).A reactangular cross-section is made in this container and gases are allowed to diffuse.Width of this rectangular cross-section is same as the side of the square cross section and length of the rectangular cross-section is 50% more than the width.Assume that the gases A and B are non reacting and rate of diffusion of the gases are only dependent upon the initial total pressure and it is independent of the change in the pressure due to diffusion.Assume all other conditions to be identical. What is the time which container will have same number of moles of A and B:

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15 SEC.
50 sec.
25 sec.
`50/3` sec.

Solution :`2000-60t=3000-120t " " IMPLIES 60t=1000 " " implies t=50/3 "sec"`
Discussion
25.

Give an example of a solid showing Frenkel defect.

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SOLUTION :ZINC SULPHIDE
Discussion
26.

Gas 'A' (Molar Mass of A =128 g "mol"^(-1)) is taken in a closed container at the initial total pressure of 1000 mm of Hg.Pressure of the gas decreases to 900 mm in 5 seconds due to the diffussion through square cross section.Another similar size container is taken in which gaseous mixture of A and B are taken.(Molar mass of the mixture 472/5) at the total pressure of 5000 mm (molar mass of B =72 g "mol"^(-1)).A reactangular cross-section is made in this container and gases are allowed to diffuse.Width of this rectangular cross-section is same as the side of the square cross section and length of the rectangular cross-section is 50% more than the width.Assume that the gases A and B are non reacting and rate of diffusion of the gases are only dependent upon the initial total pressure and it is independent of the change in the pressure due to diffusion.Assume all other conditions to be identical. Ratio of the number of moles of A and B left in the container after 10 seconds from the diffusion starts is :

Answer»

`7/9`
`2/3`
`8/11`
`9/13`

SOLUTION :Initially, `r_A=(1000-900)/5=20` torr/s
In the mixture
`M_(mix)=X_AM_A+(1+X_A)M_Bimplies 472/5=X_Axx128+(1-X_A)72`
`472/5=56X_A+72 IMPLIES 472=280X_A+360`
`X_A=112/280=5/2,X_B=3/5`
The mixture
`r_A/r'_A=(P_A'.A'_1)/(P_A A_2)implies r_A/r'_A=1/2xx X^2/(x x(3x)/2)=1/3`
`r'_A=3r_A=3xx20=60 "torr"//s " " implies r'_A^@/r'_B^@=P'_A/P'_Bsqrt(M_B/M_A)=2/3xxsqrt(72/128)=1/2`
`r'_B=120` torr/s
After 10 sec
`P''_A=2000-60xx10=1400` torr
`P''_B=3000-120xx10=1800` torr
`n''_A/n''_B=7/9`
Discussion
27.

Give an example of a solution in which solute is a solid while solvent is a liquid.

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SOLUTION :Solution of SOLUBLE SALTES in WATRE.
Discussion
28.

Gas 'A' (Molar Mass of A =128 g "mol"^(-1)) is taken in a closed container at the initial total pressure of 1000 mm of Hg.Pressure of the gas decreases to 900 mm in 5 seconds due to the diffussion through square cross section.Another similar size container is taken in which gaseous mixture of A and B are taken.(Molar mass of the mixture 472/5) at the total pressure of 5000 mm (molar mass of B =72 g "mol"^(-1)).A reactangular cross-section is made in this container and gases are allowed to diffuse.Width of this rectangular cross-section is same as the side of the square cross section and length of the rectangular cross-section is 50% more than the width.Assume that the gases A and B are non reacting and rate of diffusion of the gases are only dependent upon the initial total pressure and it is independent of the change in the pressure due to diffusion.Assume all other conditions to be identical. Gas diffused out initially from 2nd container has composition :

Answer»

`1/A=3/7`
`X_B=3/5`
`X_A=1/3`
`X_B=1/4`

SOLUTION :`(n_A//t)/(n_B//t)=P_A/P_Bsqrt(M_B/M_A) " " (n_1M_1+n_2M_2)/(x_1+x_2)=M_(MIX)`
`X_1M_1+(1-X_1)M_2=M_(mix)`
`IMPLIES X_1=2/5,X_2=3/5`
`implies X_A/X_B=2/3sqrt(72/128)=1/2 implies X_A=1/3,X_B=2/3`
Discussion
29.

Give an example of a secondary cell.

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SOLUTION :LEAD STORAGE BATTERY.
Discussion
30.

Gas A (1 mol) dissociates in a closed rigid vessel of volume 0.16 litre as per following reaction : 3 A (g) rarr 2B (g) + 4C (g) If degree of dissociation of A is 0.2 and remain constant in entire range of temperature then correct P vs T graph is [Given : R = 0.08 atm L mol^(-1) K^(-1) ]

Answer»




Solution :`{:(3 A (g),rarr,2B (g),+,4C (g),),(1 MOL,,-,,,),(1 - 0.2,,0.2 xx (2)/(3),,0.2 xx (4)/(3),),(= 0.8,,,,,),(P = (n)/(V) RT,,,,,):}`
Total mole `= 0.8 + (0.4)/(3) + (0.7)/(3)`
`= (3.6)/(3) = 1.2`
`TAN THETA = m = (NR)/(V)`
`m = (1.2 xx 0.08)/(0.16) = 0.6`
Discussion
31.

Gas A is bubbled through slaked lime when a white precipitate is formed. On prolonged bubbling the precipitate is dissolved. On heating the resultant solution, the white precipitate appears with evolution of gas B. The gases A and B respectively are

Answer»

`CO_(2) and CO`
`CO and CO_(2)`
`CO and CO`
`CO_(2) and CO_(2)`

SOLUTION :ACCORDING to the equation.
`Ca(OH)_(2)+CO_(2) OVERSET(Delta)toCaCO_(3)+H_(2)O`
`CaCO_(3)+H_(2)O+CO_(2)toCa(HCO_(3))_(2)` ltbr. `Ca(HCO_(3))_(2) overset(Delta)toCaO+H_(2)O+2CO_(2)`
HENCE, the gas A and B are `CO_(2) and CO_(2)` respectively.
Discussion
32.

Give an example of a reaction having fractional order.

Answer»

Solution :DECOMPOSITION of ACETALDEHYDE (order = 1.5)
`CH_(3)CHO OVERSET(723" K")toCH_(4)+CO," RATE "=k[CH_(3)CHO]^(1.5)`
Discussion
33.

Give an example of a physical change for each of the following relations between DeltaH and DeltaU: (i) DeltaH gt DeltaU (ii) DeltaH lt DeltaU (iii) DeltaH~~DeltaU.

Answer»

Solution :The EQUATION `DELTAH=DELTAU+DeltanRT` can be used in case of a process involving PHASE change of a substance.
(i) `H_(2)O(l)toH_(2)O(g)`. Here, `Deltan=+1`. So, `DeltaH gt DeltaU`.
(ii) `H_(2)O(g)toH_(2)O(l)`. Here `Deltan=-1`. So, `DeltaH lt DeltaU`.
Discussion
34.

Gas (A) and gas(B) bothturn K_(2)r_(2)O_(7)//H^(+) green. Gas (A) alos turbs lead acetate paper black. When gas (A) is passed into gas (B) in ann aqueous solution, yellowish white turbidiyt appears. Identify gas (A) and (B) and explain the reactions.

Answer»

Solution :The information suggest that the gas (A) is `H_(2)S` while the gas (B) is `SO_(2)`. Both turn ACIDIFIED `K_(2)Cr_(2)O_(7)` PAPER green.
`K_(2)Cr_(2)O_(7)+4H_(2)SO_(4)+underset("(Gas A)")(3H_(2)S) to K_(2)SO_(4) + underset("(green)")(Cr_(2)(SO_(4))_(3))+7H_(2)O+3(S)`
`K_(2)Cr_(2)O_(7)+H_(2)SO_(4)+underset("(Gas B)")(3SO_(2)) to K_(2)SO_(4) + underset("(green)")(Cr_(2)(SO_(4))_(3))+H_(2)O`
`underset("(Gas A)")(H_(2)S)+(CH_(3)COO)_(2)Pb to underset("(Black ppt.)")(PbS)+2CH_(3)COOH`
`underset("(Gas A)")(2H_(2)S)+underset("(Gas B)")(SO_(2)) to 2H_(2)O+underset("(Yellowish TURBIDITY )")(3S)`
Discussion
35.

Give an example of a narcotic which is used as an analgesic.

Answer»

SOLUTION :MORPHINE.
Discussion
36.

Gas A (1 mol) dissociates in a closed rigid container of volume 0.16 lit. as per following reaction. 2A(g) rarr 3B(g) +2C(g) If degree of dissociation of A is 0.4 and remains constant in entire range of temperature then the correct P us T graph is: [Given R = 0.08 lit-atm/mol/K]

Answer»




ANSWER :B
Discussion
37.

Give an example of a metal which can be purified by the process of distillation.

Answer»

SOLUTION :MERCURY.
Discussion
38.

Gangue.

Answer»

Solution :The earthly and undesired impurities of various susbstances like send `(SiO_(2))`, metal oxides, ETC. PRESENT in the ore are called gangue or MATRIX.
Discussion
39.

Give an example of a metal purified by Mond process.

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SOLUTION :NICKEL `(NI)`.
Discussion
40.

Gangue is

Answer»

IMPURE metal
impure ore
impurity in an ore
pure metal

Answer :A::C
Discussion
41.

Gammexane is the name given to

Answer»

`C_(6)H_(3)Cl_(3)`
`C_(6)H_(4)Cl_(2)`
`C_(6)H_(6)Cl_(6)`
Diphenyltrichloroethane.

Solution :`C_(6)H_(6)Cl_(6)`
Discussion
42.

Give an example of a hexadentate ligand.

Answer»

SOLUTION :EDTA (ETHYLENEDIAMINETETRAACETATE ION).
Discussion
43.

Give an example of a group which decreases the rate of aromatic electrophilic substitution reaction.

Answer»


ANSWER :`-NO_2`
Discussion
44.

Gammexane is

Answer»

D.D.T
Chloral
Benzene hexachloride
Hexachloro ethane

Answer :C
Discussion
45.

Give an example of a Heteroleptic complex.

Answer»

SOLUTION :`[Co(NH_3))_(4)` `(CO)_(3)]CI` or any SUITABLE EXAMPLE.
Discussion
46.

Gammaxene is product of _____ of benzene.

Answer»


ANSWER :ADDITION REACTION
Discussion
47.

Give an example of a fuel cell and write the cathode and anode reactions.

Answer»

Solution :HYDROGEN CELL `[H_(2)-O_(2)]` is an example of fuel cell. The REACTIONS are given as under:
`{:("Anode", H_(2)(g) + 2OH^(-)(q) to 2H_(2)O(l) + 2E^(-)xx 2),("Cathode", O_(2)(g) + 2H_(2)O(l) + 4e^(-) to 4OH^(-)(aq)), ("Net reaction", 2H_(2)(g) + O_(2)(g) to 2H_(2)O(l)):}`
Discussion
48.

Give an example of a disaccharide that contains fructose unit in the furanose form.

Answer»

SOLUTION :SUCROSE contains fructose unit in the FURANOSE FORM.
Discussion
49.

Gamma rays are:

Answer»

HIGH ENERGY electrons
low energy electrons
high energy ELECTROMAGNETIC waves
high energy positrons

Answer :C
Discussion
50.

Give an example of a disproportionation reaction of F_(2) ?

Answer»

Solution :`F_(2)` when PASSED over ice at 233 K, underoges a disproportionation reaction, i.e., `F_(2)` is both oxidised and reducted. In HOF, the oxidation state of F is +1 while in HF it is -1.
`OVERSET(0)(F_(2))(g) + H_(2)O(g) overset(233 K)rarr HOoverset(+1)(F)(l) + overset(-1)(HF)(l)`
Discussion