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.

Name one reagent to distinguish between 2-pentanone and 3-pentanone.

Answer»

Solution :`I_(2)//NaOH` (IODOFORM TEST). 2-Pentanone being a methyl ketone GIVES iodoform test while 3-pentanone does not.
Discussion
2.

Name one reagent used for the separation of primary, secondary and teritiary amines.

Answer»

SOLUTION :Hinsberg's REAGENT `(C_(6)H_(5)SO_(2)CL)`
Discussion
3.

Name one reagent used for separation of primary, secondary and tert-amines.

Answer»

SOLUTION :Benzensulfonyl CHLORIDE, `C_6 H_5 SO_2 CL` (Hinsberg.s REAGENT)
Discussion
4.

Name one ore of Mn and Cr.

Answer»

Solution :`Mn :MnO_(3)`
`CR : FeCr_(3)O_(4)`
Discussion
5.

Name one poisonous gas which can be prepared from chlorine gas.

Answer»

Solution :Phosgene `(CoCl_(2))`, TEAR GAS `(C Cl_(3). NO_(2))`, MUSTARD gas `(Cl.CH_(2)CH_(2)SCH_(2)CH_(2)Cl)`
Discussion
6.

Name one ore each of zinc and iron.

Answer»

SOLUTION :ZINC : Zinc BLENDE.
IRON : HAEMATITE.
Discussion
7.

Name one ore of manganese and chromium.

Answer»

SOLUTION :MANGANESE – `MnO_(2)` (PYROLUSITE).
Chromium - `FeCr_(2)O_(4)` (Chromite).
Discussion
8.

Name one ore each of manganese and chromium.

Answer»

SOLUTION :(i) MN: PYROLUSITE, `MnO_2`
(II) CR: Chromite/ferrochrome, `FeO. Cr_2O_3`
Discussion
9.

Name one metal which becomes passive in conc. HNO_(3).

Answer»

SOLUTION :ALUMINIUM
Discussion
10.

Name one method for the refining of zinc or spelter.

Answer»

SOLUTION :ZINC can be REFINED by FRACTIONAL DISTILLATION of zinc at 1180K.
Discussion
11.

Name one medicinal compound each that is used to treat hypertension.

Answer»

SOLUTION :RAUWOLFIA
Discussion
12.

Name one medicinal compound each that is used to treat general body pain.

Answer»

SOLUTION :ASPIRIN.
Discussion
13.

Name one ion whose central atom has the sp^(3) d^(3) type of hybrid orbitals

Answer»

SOLUTION :`[XeF_7]^(-)`
Discussion
14.

Name one ion whose central atom has sp^3 d^3 type of hybrid orbitals.

Answer»

SOLUTION :`[XeF_7]^-`
Discussion
15.

Name one important function of nucleic acids in our body

Answer»

SOLUTION :They HELP in the SYNTHESIS of PROTEINS.
Discussion
16.

Name one factor which influences the solubillity of a gas in a solvent .

Answer»

SOLUTION :PRESSURE as WELL as TEMPERATURE
Discussion
17.

Name one estrogen which forms a part of an oral contraceptive

Answer»

SOLUTION :ETHYNYLESTRADIOL or NOVESTROL.
Discussion
18.

Name one common reagent that can precipitate or react and differentate following pairs: a. Ag^(Theta) and B^(2+)b. Cu^(2+) , Pb^(2+) c. I^(Theta) and CI^(Theta)d. I^(Theta) and Br^(Theta) e. SO_(3)^(2-) and SO_(4)^(2-) i. Fe^(3+) , Cu^(2+) g. Co^(2+) and Cu^(2+)

Answer»

SOLUTION :a. `K_(2)Cr_(2)O_(4)`
`2Ag^(o+) + CrO_(4)^(2+) rarr underset(Red)(Ag_(2))CrO_(4)darr`
`Ba^(2+) + CrO_(4)^(2+) rarrunderset("YELLOW")(BaCrO_(4)darr)`
b. `K_(2) CrO`
`Cu^(2+) + CrO_(4)^(2-) rarr underset("Chocolate")(CuCrOdarr)`
`Pb^(2+) + CrO_(4)^(2+) rarr underset("Yellow")(PbCrO_(4)darr)`
c. `AgNO_(3)`
`Ag^(o+) + I^(Theta) rarr underset("Yellow")(AgI darr) Ag^(o+) + CI^(Theta) rarr underset("White")(AgCI darr)`
d. `CI_(2)` water `+ CHCI_(3)`
`21^(Theta) +CI_(2) rarr underset(CHCI_(3)"LAYER")underset(("Violet in"))I_(2)+2CI^(Theta) 2Br^(Theta) +CI_(2) rarr underset(CHCI_(3)layer)underset("Orange in")(Br_(2) +2CI^(Theta))`
e.`BaCI_(2)`
`BaCI_(2) +SO_(3)^(2-) rarr underset("White ppt. soluble in conc"HCI)(BaSO_(3)darr)`
`BaCI_(2) +SO_(4)^(2-) rarr underset("White ppt. insoluble in conc"HCI)(BaSO_(4)darr)`
f. `NH_(4)SCN`:
`Fe^(3+) +SCN^(Theta) rarr underset("Red colour")([Fe(SCN)]^(2+))`
`Cu^(2+) +2SCN^(Theta) rarr underset(Black)(Cu(SCN)_(2)darr)`
g. `NH_(4)SCN`:
`Co^(2+) +4SCN^(Theta) rarr underset("BLUE colour")([Co(SCN)_(4)]^(2-))`
`Cu^(2+) +2SCN^(Theta) rarr underset(Black)(Cu(SCN)_(2)darr)`
Discussion
19.

Name one chemical test which can be used to distinguish an aromatic primary amine from an aliphatic primary amine.

Answer»

SOLUTION :AZO DYE TEST.
Discussion
20.

Name one broad spectrum antibiotics.

Answer»

SOLUTION :Chlorophenicol
Discussion
21.

Name one artificial sweetener.

Answer»

SOLUTION :ASPARTAME.
Discussion
22.

Name one antioxidant used in wine, butter and beers.

Answer»

SOLUTION :BHA, BHT.
Discussion
23.

Name one adsorbent.

Answer»

SOLUTION :CHARCOAL
Discussion
24.

Name one 3d series element that do not show variable oxidation state.

Answer»

SOLUTION :ZINC (ZN) or SCANDIUM (SC).
Discussion
25.

Name of the structure of silicates in which three oxygen of [SiO_(4)]^(4-) are shared is

Answer»

Pyrosilicate
SHEET silicate
Linear chain silicate
Three DIMENSIONAL silicate

SOLUTION :Three dimensional sheet structure are formed when three oxygen atoms of each `[SiO_(4)]^(4-)` TETRAHEDRAL are SHARED.
Discussion
26.

Name of the reaction which converts F into G:

Answer»

CANNIZZARO reaction
Claisen condensation
Aldol condensation
Reformatsky reaction

Answer :C
Discussion
27.

Name of the members of the lenthanoid series which exhibit +4 oxidation states and those which exhibit +2 oxidation states. Try to correlate this type of behaviour with the electronic configuration of these elements.

Answer»

Solution : `+4= ._(58)Ce, ._(59)Pr, ._(60)ND, ._(65)Tb, . _(66)Dy`,`+2 = ._(60)Nd, ._(62)Sm, ._(63)Eu, . _(69) Tm, ._(70)Yb`
`+2` oxidation state is exhibitedwhen the configuration left is CLOSE is to `4f^(0)(e.g., 4f^(0), 4f^(1), 4f^(2))` or close to `4f^(7) ( e.g., 4f^(7) ` or `4f^(8))`
Discussion
28.

Name of the follwing groups: a. C_(6) H_(5)-, b. C_(6)H_(5)CH_(2)- C. (C_(6)H_(5))_(2) CH-, d. (C_(6)H_(5))_(3) C- e. C_(6) H_(5) CH-, f.C_(6) H_(5) -overset(|)underset(|)(C)-

Answer»

Solution :a. Phynuyl (Ph or `phi`)
B. Benzuyl (`Bz` or `PhCH_(2)-`)
C. DIPHENYL mehyl or benzhyl `(Ph_(2)CH-)`
d. Triphenymethyl or triyl `(Ph_(3)C-)`
e. Benzal, F. Benzo
Discussion
29.

Name of the drug whose structure given below is

Answer»

Chloramphenicol
vancomycin
penicillin
ofloxacin

Answer :C
Discussion
30.

Name of the compound given below is :

Answer»

4-Ethyl-3-methyl OCTANE
3-Methyl-4-ethyl octane
2,3-Diethyl HEPTANE
5-Ethyl-6-methyl octane.

ANSWER :A
Discussion
31.

Name of the alkene which will yield/chloro-1-methylcyclohexane by its reaction with HCl. Write the reactions involved.

Answer»

SOLUTION :
Discussion
32.

Name of some carbohydrates, their propertiesand structural patterns are given below. Match them properly

Answer»

SOLUTION :
Discussion
33.

Name of oxalate in IUPAC version changes to

Answer»

Oxalite
Oxalato
Oxalito
Oxalide

Answer :B
Discussion
34.

Name of gas that can readily decolorise acidifiedKMnO_(4) solution

Answer»

`CO_(2)`
`SO_(2)`
`NO_(2)`
`P_(2)O_(5)`

SOLUTION :`SO_(2)` READILY decolourisesacidified `KMnO_(4)` solution.
Discussion
35.

Name of following reaction. CH_2(COOH)_2 overset (P_2 O_5)rarr C_3 O_2 + 2H_2 O.

Answer»

Diels-Alder reaction
Wolff-Kishner reaction
Diels-Wolff reaction
None of these

Solution :The STATEMENT is self-explanatory.
Discussion
36.

What is the name given to the phenomenon when bopth absorption and adsorption take place together ?

Answer»

CHEMISORPTION
Physisorption
Desorption
Sorption

Answer :D
Discussion
37.

Name four factors which effect adsorption.

Answer»

Solution : (i) Nature of the GAS (II) Nature of ADSORBATE (iii) Effect of temperature and (IV) Effect of pressure.
Discussion
38.

Name(i) Artificial sweetening agent used only in cold food.(ii) Anionic derergent.

Answer»

SOLUTION :i. Asparatame
II. SODIUM lauryl SULPHATE
Discussion
39.

Name five oxoacids of phosphorus and their formulae.

Answer»

SOLUTION : Oxoacids of PHOSPHORUS. Phosphorus forms a number of oxoacids as GIVEN below:


The structures of oxoacids of phosphorus are given below

The structureof metaphosphoric ACID : However , it does not exist as simple monomer , rather it existsas cyclometaphosphoric acid or poly-metaphosphoric acid or polymetaphosphoric acid .
Discussion
40.

Name be oxo-metal anions of the first series of the transition metals in which the metal exhibits the oxidation state equal to its group number.

Answer»

SOLUTION :`Cr_2O_(7)^(2-)` and `CrO_(4)^(2-)` (group no. = oxidation state of Cr = 6)
`MnO_(4)^(2-)` (group no. = oxidation state of Mn = 7)
Vandate : `VO_(3)^(-)` (group no. = oxidation SATE of V = 5)
Discussion
41.

Name five oxoacids of phosphorus and their formulae

Answer»

SOLUTION :
he structure of OXOACIDS of phosphorus r are given below :
Discussion
42.

Name any two tests to distinguish Alcohol from Phenol.

Answer»

Solution :Distinguish between alcohol and phenol :
(i) Phenols TURN BLUE LITMUS solution red but alcohol, do not
(ii) Phenols give white precipitate with BROMINE WATER but alcohol, do not.
Discussion
43.

Name any two founder leaders of NAM ?___________.

Answer»

Solution :SUKARNO TITO JAWAHARLAL Nehru, NASSER and Nkrumah(any two)
Discussion
44.

Name any two factors which influence the rate of reaction.

Answer»

Solution :The RATE of a CHEMICAL reaction is influencedby the following faction:(a) CONCENTRATION of reactions
(b)temperature
(c)NATURE of reactants
(d)Catalyst
(e)Surface AREA of reactants etc.
Discussion
45.

Write two factors which influence the rate of reaction.

Answer»

SOLUTION :CONCENTRATION of REACTANTS and TEMPERATURE.
Discussion
46.

Name any two factors affecting the rate of a reaction.

Answer»

Solution :(i) CONCENTRATION of the REACTANTS
(ii) Temperature of the reactants
(iii) Nature of the REACTING SUBSTANCES
Discussion
47.

Name any two crystal systems.

Answer»

SOLUTION :(i) CUBIC
(II) ORTHORHOMBIC
Discussion
48.

Name any two compounds which can be used as semipermeable membrane.

Answer»

Solution :(i) COPPER ferrocyanide `Cu_(2) [ Fe (CN)_(6)]`
(II) CELLULOSE acetate.
Discussion
49.

Name any two characteristics of transition elements.

Answer»

SOLUTION :FORMATION of COLOURED COMPOUNDS and COMPLEX compounds.
Discussion
50.

Name any two applications of adsorption.

Answer»

SOLUTION :GAS MASK and ADSORPTION INDICATOR.
Discussion