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.

Assertion: 1,3 -Butadiene is monomer for natural Reason: Natural rubber is formed through anionic addition polymerization

Answer»

If both assertion and REASON are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the corret explanation of the assertion.
if assertion is true but reason is false
if the assertion and reason both are false

Solution :Monomer of natural RUBBER is isoprene, rubber is RADICAL addition polymer.
Discussion
2.

Assertion :""^(22)_(11)Na emits a position giving ""^(22)_(12)Mg Reason : In beta^+ emission neutron is transformed into proton.

Answer»


Solution :`._(11)Na^(22) rarr ._(12)Mg^(22) + ._(-1)beta^(0)`
THUS this change involves a `beta`-particle EMISSION and not a positron. Also, proton emission converts proton into neutron as : `._(1)P^(1) rarr ._(0)n^(1) + ._(+1)beta^(0)`
Discussion
3.

Assertion : 100% pure acetic acid is called glacial acetic acid Reason : Its called so as it forms ice like crystals when cooled.

Answer»

(A) and ( R) are true and ( R) is the correct EXPLANATION of (A)
Both (A) and ( R) are true but ( R) does not EXPLAIN (A)
(A) is true but ( R) is false
Both (A) and ( R) are false

Answer :A
Discussion
4.

Assertion: 1 M solution of KCl has greater osmotic pressure than 1M solution of glucose at the same temperature Reason :In solution KCl dissociates to produce more number of particles .

Answer»

If both assertion and reason are TRUE and reason is the CORRECT EXPLANATION of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false

ANSWER :A
Discussion
5.

Assertion : 1.231 has three significant figures. Reason : All numbers right to the decimal point are significant.

Answer»

If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If the assertion and reason both are false.

Solution :1.231 has FOUR significant figures all no. from left to right are COUNTED, STARTING with the first DIGIT that is not ZERO for calculating the no. of significant figure.
Discussion
6.

Assertion: 1-butene on reaction with HBr in the presence of a peroxide produces 1-bromobutane. Reason:It involves the formation of a primary radical

Answer»

Both assertion and reason are correct and reason is the correct explanation of the assertion
Both assertion and reason are correct but reason is notthe correct explanation of the assertion
Assertion is correct, but reason is incorrect
Assertion is incorrect, but reason is correct

Solution :Assertion is correct but reason is incorrect because 1-butene on reaction with HBr in the presence of a PEROXIDE produces 1-bromobutene. In this reaction, secondary free radical is formed as INTERMEDIATE PRODUCT.
(i)(a)`(C_6H_5CO)_2 O_2 to 2C_6H_5COO^(.)`
(b)`C_6H_5COO^(-)+HBr to C_6H_5COOH +Br^(.)`
(II)`CH_3-CH_2-CH=CH_2+Br^(.)to CH_3-CH_2-Coverset(dot)H-CH_2Br`
(iii)`CH_3-CH_2-overset(dot)CH-CH_2Br + H -Br to CH_3-CH_2 -CH_2 -CH_2Br+Br^(dot)`
Discussion
7.

Assertion : [10]Annulene is not aromatic though it contains Huckel number of pi-electrons. Reason:Steric interaction between internal hydrogens makes it non-planar

Answer»

If both assertion and reason are true and the reason is the correct explanation of the assertion
If both assertion and reason are true butreason is not the correct explanation of the assertion
if assertion is true but reason is false
If assertion and reason both are false

SOLUTION :
Due to SERVERE non-bonded interactions between the internal (as shown in FIGURE), the RING assumes non-planar geometry
Discussion
8.

Assertion:1//4^(th) of the gas is expelled if air present in an open vessel is heated from 27^(@)C to 127^(@)C. Reason : Rate of diffusion of a gas is inversely proportional to the square root of its molecular mass.

Answer»

If both ASSERTION and reason are true and the reason is correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If the assertion and reason both are false

Solution :`(V_(1))/(T_(1))=(V_(2))/(T_(2))` ( initial fraction ) `(V_(1))/(V_(2))=1`when temperature is `27^(@)C`. At `127^(@)C` the newfraction is `(V_(1))/(V_(2))=(300)/(400)=(3)/(4) :. ` air expelled `implies 1-(3)/(4)=(1)/(4)`
Discussion
9.

Assertion : 0.2 M aqueous solution o flucose has higher lowering in freezing point temperature than 0.2 M (aqueous) urea solution. Reason K_(f) for both the solutions are different.

Answer»

If both assertion are REASON are correct and reason is correct explanation for assertion.
If both assertion and reason are CORRCT but reason is not correct explanation for assertion.
If assertion is corrct but reason is incorrect.
If assertion and reason both are incrrect.

SOLUTION :Correct Assertion. 0.2 M awueous solution of GLUCOSE has the same lowering in freezing point temperature then 0.2 M aqueous urea solution.
Correct Reason. `K_(f)` is the same since SOLVENT remains the same. It is water.
Discussion
10.

Assertion : 0.2 per cent solution of phenol is an antiseptic while its one percentsolution is disinfectant. Reason : Antiseptics are also called disinfectant .

Answer»

If both assertion and reason are trueand reason is the correct explanationof assertion .
If both assertion and reason are TRUE but reason is not the correct explanationof assertion .
If assertion is true but reason is false.
If both assertion and reason are false.

Solution :Antiseptics are APPLIED to the living tissues such as WOUNDS and cuts whereas DISINFECTANTS are applied to inanimate objects such as FLOORS, drainage systems ,etc .
Discussion
11.

Assertion: 0.1M glucose, 0.1M urea solutions cause the same osmotic pressure in solution. Reason: Osmotic pressure is a measure of the number of particles present in the solution

Answer»

Both ASSERTION and REASON are TRUE and Reason is the CORRECT explanation of Assertion
Both Assertion and Reason are true and Reason is not the correct explanation of Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false

ANSWER :A
Discussion
12.

Assertion : 1 amu equals to 1.66xx10^(-24) g. Reason : 1.66xx10^(-24)g equals to 1/12 th of mass of a C^(12) atom.

Answer»

If both assertion and reason are true and the reason is the CORRECT EXPLANATION of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If the assertion and reason both are false.

Solution :12 gm of C-12 contain `6.023xx10^(23)` ATOM
`:. 12/6.023xx10^(-23)=1.66xx10^(-24)`.
Discussion
13.

Assertion. 0.1 M solution of glucose has higher increment in the freezing point than 0.1 M solution of urea. Reason. K_(f) for both has different values.

Answer»

If both ASSERTION and reason are true, and reason is the true explanation of the assertion.
If both assertion and reason are true, but reason is not the true explanation of the assertion.
If assertion is true, but reason is false.
If both assertion and reason are false.

SOLUTION :Correct A. Both being non-electrolytes with same molar concentration will have same decrease (not INCREMENT) in FREEZING point.
Correct R. Both being aqueous solution, i.e., solvent is same (water), `K_(f)` will be same for both.
Discussion
14.

Assertin : the CaSO_(4).5H_(2)O_((s))hArrCaSO_(4).3H_(2)O_((s))+2H_(2)O_((g)) is K_(C)=([CaSO_(4).3H_(2)O][H_(2)O]^(2))/([CaSO_(4).5H_(2)O]) Reason: Equlibrium constnat is the ratio of the product of molar concentration ofhte substances produced to the product of the molar concentrations of reactants with each concentrations term raised to the power equal to the respective stoichiometric constant.

Answer»

If both assertion and reason are TRUE and the reason is the CORRECT EXPLANATION of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If assertion is false but reason is true.

Discussion
15.

Assertin : Cu^(2+)is the onlyion (M^(2+)) whichhas positiveE^(@) red(M^(2+) //M) in 3dseries Reason : Cu haslowerhydrationenthalpyas comparisonto itsionisationenthalpyand Delta H atm.

Answer»

bothassertionand reasonare truereasonis thecorrectexplanationof THEASSERTION .
bothassertinandreasonare truebutreasonis notcorrectexplanationof theassertion
Assertionis truebutreasonis FALSE
Bothassertionand reasonare false.

Answer :A
Discussion
16.

Assertin: All Cr- O bondlengthinK_(2) Cr_(2) O_(7) are equal Resson: Boththe Cr are presentin dsp^(2) hybridstate.

Answer»

Bothassertinand reasonare trueandreasonis thecorrectexplanationof THEASSERTION
bothassertionand reasonare truebut REASONIS notthecorrectexplanationof theassertion
Assertionis truebutreasonfalse.
Bothassertionand reasonare false.

Answer :B
Discussion
17.

Asserion (A): Ethanol is miscible in all proportions with water Reason (R): Hydrogen bond is formed between water and alcohol molecules.

Answer»

Both A and R are true and R is the correct EXPLANATION to A
Both A and R are true and R is not the correct explanation to A
A is true but R is FALSE
A is false but R is true

Answer :B
Discussion
18.

Asseriton : Hard Water is not fit for washing clothes. Reason : It contains Ca^(+2) & Mg^(+2) ion which can forms ppt with soap & detergents.

Answer»

If both Assertion & REASON are True & the Reason is a CORRECT EXPLANATION of the Assertion.
If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
If Assertion is True but the Reason is False.
If both Assertion & Reason are False.

Answer :A
Discussion
19.

Asseration : Salts like KCl,KNO_3 i.e., inert electrolytes are used in salt bridge. Reason : An inert electrolyte can easily be filled in the U-tube.

Answer»


SOLUTION :Assertion is true but reason is false. Ions of INERT electrolytes are not involved in any electrochemical CHANGE until they react chemically with the electrolytes in the TWO half-cells.
Discussion
20.

Asseration : A small amount of acid or alkali is added before electrolysis of water. Reason : Pure water is weak electrolyte.

Answer»


Solution :SMALL AMOUNT of ACID increase the conductivity of water by INCREASING ionisation.
Discussion
21.

Asprin is obtained by the reacation of (CH^(3)CO)^(2)O with

Answer»

BENZOIC ACID
salicylin acid
phenol
cresol

ANSWER :B
Discussion
22.

Asprin do not contain

Answer»

COOH GROUP
`OCOCH^(3)` group
OH group
benzene nucleus

Answer :C
Discussion
23.

Aspirin on hydrolysis in the stomach gives _______which cause _______

Answer»


ANSWER :SALICYCLIC ACID, ULCERS
Discussion
24.

Aspirin is widely used to prevent heart attack because of its

Answer»

ANTIPYRETIC property
anti-blood CLOTTING action
antidepressant
pain KILLING action

Answer :B
Discussion
25.

Aspirin is which type of drug ?

Answer»

Antibiotics
Antacids
ANALGESIC
Antiseptics

Solution :Analgesic
Discussion
26.

Aspirin is used to cure Alzheimer's disease which is caused by

Answer»

`AL^(3+)`
`MG^(2+)`
`FE^(3+)`
All of these

Answer :A
Discussion
27.

Aspirin is prepared by

Answer»

alkoxylation of salicylic acid
OXIDATION of salicylic acid
acelylation acid
reduction of salicylic acid

Answer :C
Discussion
28.

Aspirin is prepared by the rection (CH_(3)CO)_(2)O with

Answer»

PHENOL
SALICYLIC ACID
citiric acid
saccharic acid

ANSWER :B
Discussion
29.

Aspirin is pain relieving antipyretic drug but can be used to prevent heart attack. Explain.

Answer»

Solution :Aspirin belongs to non-narcotic Aspirin inhibits the synthesis of CHEMICALS known as prostaglandins which stimulate inflammation in the tissue and cause pain these drugs are effective in relieving SKELETAL pain such as that due to arthritis. These drugs have many other effects such as reducing fever (ANTIPYRETIC) and prevents platelet coagulation Because of its anti BLOOD clotting action, aspirin finds use in PREVENTION of heart attack.
Discussion
30.

Aspirinis pain relieving antipyretic drug but can be used to prevent heart attack. Explain.

Answer»

Solution :Aspirin is 2-acetoxybenzoic acid. It is very effectivein reducing or ABOLISHING pain without causing impairment OC consciousness, mental confusion, incordination or paralysis or some othr disturbance or disorder of the nervous system. It REDUCES FEVER (antipyretics) and prevents platelet coagulation.
Due to it has ANTI blood clotting action and, therefore it is widely used to prevent heart attack.
Discussion
31.

Aspirin is obtained by the reaction of salicylic acid with

Answer»

Acetone
Acetaldehyde
Acetyl chloride
Acetic anhydride

Solution :.
Discussion
32.

Aspirin is obtained by the reaction of CH_3COClwith:

Answer»

BENZOIC ACID
Phenol
Salicylic acid
Benzaldehyde.

Answer :C
Discussion
33.

Aspirin is obtained by the reaction of CH_3COCl with :

Answer»

Phenol
Benzoic ACID
SALICYLIC acid
Benzaldehyde

Answer :A::B::C::D
Discussion
34.

Aspirin is chemically named as

Answer»

methyl SALICYLATE
ethyl salicylate
o-hydroxy benzoic ACID
ACETYL salicylic acid

Solution :acetyl salicylic acid
Discussion
35.

Aspirin is an acetylation product of

Answer»

p-dihydroxybenzene
o-hydroxybenzoic acid
o-dihydroxybenzene
m-hydroxybenzoic acid.

Solution :
Discussion
36.

Aspirin is an acetylation product of :

Answer»

<P>p - dihydroxy benzene
m - HYDROXY benzoic acid
o - dihydroxy benzene and salicylic acid both
o - hydroxy benzoic acid

Answer :D
Discussion
37.

Aspirin is an acctylation product of

Answer»

p-Dihydroxybenzene
o-Hydroxybenzoic acid
o-Dihydrobenzene
m-Hydroxybenzoic acid

Answer :B
Discussion
38.

Aspirin is an

Answer»

antihistamine
Analgesic
ANTIBACTERIAL
ANTIBIOTIC

ANSWER :B
Discussion
39.

Aspirin is also known as

Answer»

METHYL SALICYLATE
Acetyl salicylic acid
Acetyl salicylate
Methyl salicylicacid

Solution : Aspirin or Acetyl salicylic acid.
It is ALSO known as ACETOXY Banzoic acid.
Discussion
40.

Aspirin is also known as:

Answer»

METHYL SALICYLIC acid
Acetyl salicylic acid
Acetyl salicylate
Methyl salicylate

Answer :B
Discussion
41.

Aspirin is acetyl salicylic acid, the pair of functional groups present in the compound is

Answer»

Hydroxyl, ester
Carboxylic ACID, hydroxyl
Carboxylic acid, keto
Carboxylic acid, ester

SOLUTION :is ASPRIN
Discussion
42.

Aspirin is a pain relieving antipyretic drug but can be used to prevent heart attack. Explain.

Answer»

SOLUTION :ASPIRIN prevents platlet COAGULATION and has antiblood-clotting ACTION. It can prevent BLOOD clotting in heart.
Discussion
43.

Aspirin is know as :

Answer»

ACETYL SALICYLIC ACID
2-methoxybenzoic acid
Acetyl OXALIC acid
Methylbenzoic acid

Solution :Acetyl salicylic acid
Discussion
44.

Aspirin is a/an

Answer»

ACETYLSALICYLIC ACID
benzoyl SALICYLIC acid
chlorobenzoic acid
ANTHRANILIC acid

SOLUTION :acetylsalicylic acid
Discussion
45.

Aspirin is:

Answer»

BARBITURIC ACID
Seconal
Chloro-xylenol
ACETYL SALICYLIC acid.

Solution :Acetyl salicylic acid is ASPIRIN.
Discussion
46.

Aspirin is .........

Answer»

barbitiric ACID
seconal
chloroxylenol
ACETYL SALICYLIC acid 

SOLUTION :acetyl salicylic acid
Discussion
47.

Aspirin is 2-aetoxybenzoic acid.

Answer»


ANSWER :T
Discussion
48.

Aspirin is :

Answer»

ANTIBIOTIC
Analgesic
Tranquilizer
None

Answer :B
Discussion
49.

Aspirin inhibits the synthesis of _______which stimulate inflammation in the tissue and cause pain

Answer»


ANSWER :PROSTAGLANDINS
Discussion
50.

Aspirin can be prepard from salicylic acid (C_(7)H_(6)O_(3)) and acetic anhydride (C_(4)H_(6)O_(3)) according to the equation 2C_(7)H_(6)O_(3)+C_(4)H_(6)O_(3)rarr2C_(9)H_(8)O_(4)+H_(2)O This reaction gives a yield of 74%, provided that a 50% excess of acetic anhydride (the cheaper reagent) is used. If a chemist wants to prepare 20.0g of aspirin in the laboratory, what mass of the of acetic anhydride should be use ?

Answer»

`20.7g`
`11.5g`
`23.0g`
`7.65g`

Solution :`2C_(7)H_(6)O_(3)+C_(4)H_(6)O_(3)rarr2C_(9)H_(8)O_(4)+H_(2)O`
If 100% YIELD
360g of Asprine required`=102g` of acetic anhydried
1G of Asprine required `=(102)/(360)g` of acetic anhydried
20g of Asprine required `=(102)/(360)xx20g` of acetic anhydried
But for 74% yield acetic anhydride required is =7.657g
But CHEMIST taking 50% exceeds, So `=7.65+7.65xx(500)/(100)=11.5g`
Discussion