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.

Mg + "air" overset("Ignition") rarrA+ B (Insoluble ) A overset(dil.Hcl)rarrC+Duarr CuO+Doverset(Delta)rarrEuarr Correct statment about 'E' ......

Answer»

It is an ACIDIC gas
It I a basic gas
It can be prepared by heating `NH_4NO_2`
It can be obtaind by heating `NH_(4)CL` with NaOH

Solution :`5Mg+underset("air")(ubrace(N_2+O_2))overset(Delta)rarrunderset((A))(Mg_(3)N_(2))+underset("INSOLUBLE")underset(uarr(B))(MgOdarr)underset((A))(Mg_3N_2)+underset("dil)(6HCl)rarrunderset((C))(3MgCl_2)+underset((D))(2NH_3)uarr3CuO+underset((D))(2NH_3)rarr3Cu+underset((E))(N_2)uarr+3H_2O`
E is `N_2` it can be prepared by heating `NH_(4)NO_(2)overset(Delta)rarrN_(2)+2H_(2)O`
Discussion
2.

Mg + "air" overset("Ignition") rarrA+ B (Insoluble ) A overset(dil.Hcl)rarrC+Duarr CuO+Doverset(Delta)rarrEuarr'E' can be prepared by heating .......

Answer»

`NH_(4) NO_3`
`HNO_3`
`(NH_4)_(2)Cr_(2)O_7`
`N_2O_4`

Solution :`5Mg+UNDERSET("air")(ubrace(N_2+O_2))overset(Delta)rarrunderset((A))(Mg_(3)N_(2))+underset("insoluble")underset(uarr(B))(MgOdarr)underset((A))(Mg_3N_2)+underset("dil)(6HCl)rarrunderset((C))(3MgCl_2)+underset((D))(2NH_3)uarr3CuO+underset((D))(2NH_3)rarr3Cu+underset((E))(N_2)uarr+3H_2O`
Mg + air `rarr MgO+Mg_(3)N_(2),Mg_(3)N_(2)+6H_(2)Orarr3Mg(OH)_2+2NH_(3)uarr`
`3CuO +2NH_(3)overset(Delta)rarr3Cu+3H_(2)O+N_(2(E))uarrCr_(2)O_(7)overset(Delta)rarrN_(2)(E)uarr+Cr_(2)O_(3)+4H_(2)O`
Discussion
3.

Mg + "air" overset("Ignition") rarrA+ B (Insoluble ) A overset(dil.Hcl)rarrC+Duarr CuO+Doverset(Delta)rarrEuarr What is not correct ?

Answer»

`Ba(N_3)2overset(Delta)RARR` Neutral gas
`NaNO_32overset(Delta)rarr` Paramagneticgas
`LiNO_(3)OVERSET(Delta)rarr` Acidic and diamganetic gases
`Ba(N_3)2overset(Delta)rarr` Coloured PARAMAGNETIC gas

Solution :`5Mg+UNDERSET("air")(ubrace(N_2+O_2))overset(Delta)rarrunderset((A))(Mg_(3)N_(2))+underset("insoluble")underset(uarr(B))(MgOdarr)underset((A))(Mg_3N_2)+underset("dil)(6HCl)rarrunderset((C))(3MgCl_2)+underset((D))(2NH_3)uarr3CuO+underset((D))(2NH_3)rarr3Cu+underset((E))(N_2)uarr+3H_2O`
a) `Ba(N_3)_(2)overset(Delta)rarr2Ba+3N_(2)uarr` neutral gas
b) `2NaNO_3overset(Delta)rarr2NaNO_(2)+O_(2)uarr` paramagnetic gas
c) `2LiNO_(3) rarrLi_(2)O+2NO_(2)+1/2O_(2)uarr` acidic , colored and paramagnetic
Discussion
4.

Mg + "air" overset("Ignition") rarrA+ B (Insoluble ) A overset(dil.Hcl)rarrC+Duarr CuO+Doverset(Delta)rarrEuarrCorrect statment about 'D' is

Answer»

It is a Lewis acid
It can act as a strong LIGAND
It is a good oxidant
It is neutral to Litmus

SOLUTION :`5Mg+underset("air")(ubrace(N_2+O_2))OVERSET(Delta)rarrunderset((A))(Mg_(3)N_(2))+underset("insoluble")underset(uarr(B))(MgOdarr)underset((A))(Mg_3N_2)+underset("dil)(6HCL)rarrunderset((C))(3MgCl_2)+underset((D))(2NH_3)uarr3CuO+underset((D))(2NH_3)rarr3Cu+underset((E))(N_2)uarr+3H_2O`
d - can acts as strong ligand
Discussion
5.

Metntion the chief use of quaternary ammonium salts derived from long chain amines. Or what for are quaternary ammonium salts widely used?

Answer»

Solution :The quaternary ammonium SALTS derived from LONG chain ALIPHATIC amines are USED as detergents, i.e., `CH_(3)(CH_(2))_(15)overset(+)(N)(CH_(3))_(3)Cl^(-)`, cetyltrimethylammonium chloride.
Discussion
6.

MF + XeF_(4) rarr M^(+) (M^(+)= alkali metal cation) The state of hybridisation of the central atom in A and shape of the species are:

Answer»

`sp^(3)d, TBP`
`sp^(3)d^(3)`, DISTORTED OCTAHEDRAL
`sp^(3)d^(3)`, pentangonal planar
No COMPOUND formed at all

Answer :C
Discussion
7.

Methylphenyl ether can be obtained by reacting

Answer»

Phenolate IONS and methyl iodide
Methoxide ions and bromobenzene
Methonal and phenol
Bromo BENZENE and methyl bromide

Solution :`C_(6)H_(5)O^(-)+CH_(3)Ito C_(6)H_(5)OCH_(3)+ I^(-)`
Discussion
8.

Methylene chloride on hydrolysis yields :

Answer»

HCHO
`CH_3CHO`
`CH_3COCl`
None

Answer :A
Discussion
9.

Methylene chloride on hydrolysis yields:

Answer»

HCHO
`CH_3CHO`
`CHCl_3`
`CH_3COCl`

ANSWER :A
Discussion
10.

Methylene blue, from its aqueous solution is adsorbed on activated charcoal at 25^(@)C.For this process, the correct statement is

Answer»

The ADSORPTION REQUIRES activation at `25^(@)C`
The adsorption is accompanied by a decrease in enthalpy.
The adsorption increases with INCREASE of temperature
The adsorption is irreversible.

Solution :The adsorption of METHYLENE blue on activated charcoal is an example of PHYSIOSORPTION which is exothermic, multilayer and does not have energy barrier
Discussion
11.

Methylene blue, from its aqueous solution, is adsorbed on activated charcoal at 25^(@) C. For this process, the correct statement is

Answer»

The ADSORPTION requires activation at `25^(@)C`.
The adsorption is accompanied by a decreases in enthalpy.
The adsorption INCREASES with INCREASE of temperature.
The adsorption is irreversible.

Answer :B
Discussion
12.

Methylationof methylaminegives 1^(st) productas

Answer»

`(CH_(3))_(3) N`
`(CH_(3))_(2) NH`
`(CH_(3))_(4) N^(+) I^(-)`
both(a)and ( B)

Answer :D
Discussion
13.

Methylation of glucose with dimethyl sulphate indicates the presence of following group in glucose :

Answer»

-CHO group
-COOH group
-OH group
None

Answer :C
Discussion
14.

Methylated spirit is

Answer»

Methanol
Methanol+ ethanol
Methanoic alcohol
Methanamide

Solution :5-10% METHYL alcohol and REMAINING ethanol is called METHYLATED spirit. It is ALSO known as denatured alcohol because it is unfit for drinking .
Discussion
15.

Methylate spirit (ethyl alcohol containing a small amount of methyl alcohol) is used fo rcleaning the wooden furnitue of doors windows etc. becore polishing them. Quite often, some incident are reported where people die due to drinking of this spirit. This is inspite of the fact that copper sulphate is added to it which gives it a blue colour to give a warning that it is not meant for drinking. After reading the above paragraph, answer the questions : Why is methylate spirit poisonous ?

Answer»

SOLUTION :METHYL ALCOHOL is POISONOUS.
Discussion
16.

Methylate spirit (ethyl alcohol containing a small amount of methyl alcohol) is used fo rcleaning the wooden furnitue of doors windows etc. becore polishing them. Quite often, some incident are reported where people die due to drinking of this spirit. This is inspite of the fact that copper sulphate is added to it which gives it a blue colour to give a warning that it is not meant for drinking. After reading the above paragraph, answer the questions : What is the role of spirit used for cleaning the wooden surface before polish ?

Answer»

SOLUTION :SPRITE is used to remove ABSORBED layers of gases, liquid or SOLID film so that no crack is DEVELOPED after polish.
Discussion
17.

Methylated spirit is :

Answer»

METHANOL CONTAINING some syridine
Ethanol containing some methanol
Pure methanol
`95%` methanol

Answer :B
Discussion
18.

Methylate spirit (ethyl alcohol containing a small amount of methyl alcohol) is used fo rcleaning the wooden furnitue of doors windows etc. becore polishing them. Quite often, some incident are reported where people die due to drinking of this spirit. This is inspite of the fact that copper sulphate is added to it which gives it a blue colour to give a warning that it is not meant for drinking. After reading the above paragraph, answer the questions : As a good citizen, what do you suggest should be done to prevent people from drinking spirit ?

Answer»

Solution :The sale of METHYLATED spirit should be strictly CONTROLLED just as it has been done on the sale of ACID as INCIDENTS of acid throwing were increasing.l Spirit should be available only to registered FURNITURE dealeers.
Discussion
19.

Methylamine reacts with nitrous acid to form :

Answer»

`CH_(3)CH_(3)`
`CH_(3)NO_(2)`
`CH_(3)OH`
`CH_(3)CH_(2)OH`.

SOLUTION :`CH_(3)NH_(2)+HNO_(2) rarr CH_(3)OH+H_(2)O+N_(2) uarr`
Discussion
20.

Methylamine reacts with HNO_2 to form

Answer»

`CH_3 - O-N=O`
`CH_3 -O-CH_3`
`CH_3 OH`
`CH_3 CHO`

SOLUTION :`UNDERSET( "METHYLAMINE ")(CH_3 NH_2 ) + HNO_2to CH_3 OH+N_2 H_2 O`
Discussion
21.

Methylamine reacts with HNO_(2) to form

Answer»

`CH_(3)-O-N= 0`
`CH_(3)OCH_(3)`
`CH_(3)OH`
`CH_(3)CHO`

Answer :C
Discussion
22.

Methylamine reacts with HNO_(2) to form:

Answer»

`CH_(3)-O-N=O`
`CH_(3)-O-CH_(3)`
`CH_(3)OH`
`CH_(3)CHO`

ANSWER :C
Discussion
23.

Methylamine reacts with HNO_(2) to form _____

Answer»

`CH_(3)-O-N=O`
`CH_(3)-O-CH_(3)`
`CH_(3)OH`
`CH_(3)CHO`

Answer :C
Discussion
24.

Methylamine is soluble in water but not aniline. Explain.

Answer»

Solution :Methylamine forms H-bonds with WATER and hence it is soluble in water. ltBrgt
In contrast the large HYDROCARBON part of aniline retards the tendency of the `-NH_(2)` GROUP to FORM H-bonds with water and hence it is only sparingly soluble in water.
Discussion
25.

Methylamine is more....than ammonia due to.....effect.

Answer»

SOLUTION :BASIC, +I.
Discussion
26.

Methyl-ter-butyl ether on heating with HI of one molar concentration gives

Answer»

`CH_(3)I+(CH_(3))_(3)COH`
`CH_(3)OH+(CH_(3))_(3)Cl`
`CH_(3)I+(CH_(3))_(3)Cl`
None of the above

Solution :`CH_(3)-UNDERSET(CH_(3))underset(|)OVERSET(CH_(3))overset(|)C-O-CH_(3)+HI to CH_(3)I + (CH_(3))_(3)COH`
Discussion
27.

methylamine can be prepared by

Answer»

WURTZ reaction
Friedel-Crafts reaction
Hofmann's bromamide reaction
Clemmensen's reaction

Answer :C
Discussion
28.

Methyl phenyl ether cannot be prepared from bromoenzene. Discuss.

Answer»

SOLUTION :To prepare the ether, bromobenzene must react with sodium methoxide but the CLEAVAGE of C-Br bond in bromobenzene is diffifult because of partial double bond character RESULTING from conjugation. However , the desired ethercan be PREPARED by REACTING sodium phenoxide with methyl bromide.
Discussion
29.

Methyl phenyl ether can be obtained by reacting

Answer»

phenolate IONS and METHYL iodide
methoxide ION and bromobenzene
methanol and phenol
bromobenzene and methyl bromide

Answer :A
Discussion
30.

Methyl organge is the example of which type of dye

Answer»

ACID dye
Mordant dye
Azo dye
Both a and c

Answer :D
Discussion
31.

Methyl-n-propyl ketone on oxidation with K_(2)Cr_(2)O_(7) and H_(2)SO_(4) gives mainly :

Answer»

`CH_(3)CH_(2)COOH+CH_(3)COOH`
`CH_(3)CH_(2)CH_(2)COOH+HCOOH`
`CH_(3)COOH+HCOOH`
`CH_(3)CH_(2)COOH+CO_(2)+H_(2)O`

Answer :A
Discussion
32.

Methyl orange is an indicator in acid-alkali titration. It gives

Answer»

YELLOW colour in alkaline MEDIUM
Red colour in ACID medium
Yellow colour in acid medium
Yellow colour in alkaline medium and red colour in acid medium

Solution :Methyl orange is yellow in alkaline medium and red in acidic medium.
Discussion
33.

Methyl orange gives red colour in :

Answer»

SODIUM CARBONATE solution
Sodium chloride solution
Hydrochloric acid solution
Pottasium hydroxide solution

Answer :C
Discussion
34.

Methyl magnesium iodide on treatment with D_2O furnishes a hydrocarbon, along with Mg(OD)I. The hydrocarbon is:

Answer»

`CH_3D`
`CH_3CH_2D`
`CH_4`
NONE

ANSWER :A
Discussion
35.

Methyl magnesium bromide reacts withwater toform :

Answer»

`C_(2) H_(6)`
`CH_(4)`
`C_(2)H_(5)OH`
`CH_(3) OH`

Answer :B
Discussion
36.

Methyl lithium can abstract an alpha - Hydrogen most easily from

Answer»




Solution :More than STABILITY of CONJUGATE BASE (`A^-`) more will be the ACIDIC strength of (HA)
Discussion
37.

Methyl magnesium bromide on treating with ……….. Gives 2-propanol :

Answer»

HCHO
`CH_3CHO`
`C_2H_5OH`
`O=C=O`

ANSWER :B
Discussion
38.

Methyl ketones are usually characterised by

Answer»

IDOFORM test
TOLLEN REAGENT
SCHIFF test
BENEDICT test

Answer :A
Discussion
39.

Methyl ketones are characterized through

Answer»

TOLLENS' reagent
IODOFORM TEST
Schiff's reagent
Fehling's solution

Solution :Methyl ketones are CHARACTERIZED by iodoform test.
Discussion
40.

Methyl ketones are characterized through :

Answer»

TOLLEN's reagent
Iadoform test
Schiff's test
None.

Answer :B
Discussion
41.

Methyl ketones are characterised through :

Answer»

The Tollen.s REAGENT
The IODOFORM test
The Schiff.s test
The Benedict.s reagent

ANSWER :B
Discussion
42.

Methyl Isocyanate, the poisonous gas which was responsible for Bhopal tragedy in 1984, on alkaline hydrolysis gives

Answer»

Methylamine
Methyl carbamic ACID
ETHYL amine
Methyl cyanide

Answer :1
Discussion
43.

Methyl ketone group is identified by

Answer»

LUCAS test
Haloform test
Hinsberg test
Millon's test

ANSWER :B
Discussion
44.

Methyl isocyanide on reduction using LiAlH_4 gives :

Answer»

METHYL amine
Ethyl amine
Dimethyl amine
Trimethyl amine

Answer :C
Discussion
45.

Methyl ethyl propylamine form non- super -imposable mirror image but it does not show opitcal activity because :

Answer»

Of RAPID FLIPPING
Amines are BASIC in nature
Nitrogen has a lone pair of ELECTRONS
Of absence of ASYMMETRIC nitrogen

Answer :A
Discussion
46.

Methyl cyclohexene on reductive oxonzolysis followed by reaction with dil. NaOH gives [X] number of products A mixture of HCHO + PhCHO on treatment with conc. NaOH gives Y number of products 1,2-Dimethylcyclohexene on treatment with metachloroperbenzoic acids give (Z) number of products .

Answer»

SOLUTION :
Discussion
47.

Methyl group attached to benzene can be oxidised to carboxyl group by reacting with

Answer»

`Fe_(2)O_(3)`
`AgNO_(3)`
`KMnO_(4)`
`Cr_(2)O_(3)`.

ANSWER :C
Discussion
48.

Methyl free radical involves:

Answer»

sp-HYBRIDISATION
`sp^2`-hybridisation
`sp^3`-hybridisation
`sp^3d`-hybridisation

Answer :C
Discussion
49.

Methyl cyanide on acid hydrolysis gives .....

Answer»

ACETYL CHLORIDE
ACETIC acid
ACETAMIDE
Acetic anhydride

Solution :Acetamide
Discussion
50.

Methyl cyanide on reduction with sodium and alcohol gives:

Answer»

Methyl AMINE
ETHYL amine
Methyl alcohol
Acetic acid.

Solution :`CH_(3)CN+4Hoverset(Na.C_(2)H_(5)OH)RARR underset("Ethyl amine")(CH_(3)CH_(2)NH_(2))`
Discussion