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.	Orlon is a polymer of :
Answer» VINYL CHLORIDE NEOPRENE ACRYLONITRILE Tetrafluoroethene Answer :C

2.	Orlon has monometric unit
Answer» acrolein glycol vinyl cyanide isoprene Solution :Polyacrylonitrile is used as a SUBSTITUTE for WOOD in making commercialfibresos orlon or acrilan. `underset("Acrylonitrile or vinyl cyanide ")(nH_(2)C=overset(CN)overset(\|)(C)H) underset("Peroxide catalyst")overset("Polymerisation")to underset("Polyacrylonitrile(PAN)(orlon)")([--CH_(2)-overset(CN)(C)H--]_(n)`

3.	Orlon has a unit of:
Answer» VINYL cyanide Isoprene Glycol Acrolein Answer :A

4.	Orlon.
Answer» SOLUTION :It is USED in MAKING BLANKETS as arificial WOOL.

5.	Orlon has monomeric unit
Answer» VINYL CYANIDE Acrolein Isoprene Glycol. Answer :A

6.	Orinithine and citrulline are called………………
Answer» SOLUTION :NON - PROTEIN AMINO ACIDS

7.	Organometallic compound used in the purifi-cation of its metals is
Answer» `NI(CO)_4` `PB(C_2H_5)_4` `Li-C_4H_9` `Na_2[Ni(CN)_4]` ANSWER :A

8.	Organometallic compound used in purification of its metals is
Answer» `NI(CO)_4` `PB(C_2H_5)_4` `Li-C_4H_9` `Na_2[Ni(CN)_4]` ANSWER :A

9.	Organometallic compound used in the purification of its metals is:
Answer» `NI(CO)_4` `Pb(C_2H_5)_4` `Li-C_4H_9` `Na_2[Ni(CN)_4]` ANSWER :A

10.	Organic halogen compound used in industry as solvents are chlorides rather than bromides and iodides. Explain.
Answer» Solution :Organic ALKYL chlorides are WIDELY USED as solvents in INDUSTRY because chlorides are not only more stable but are also more volatile than bromide and IODIDES.

11.	Organic esters on hydrolysis yields:
Answer» Acids Alcohols Both (a) and (B) None Answer :C

12.	Organic compounds used in industry as solvents are chlorides rather than bromides and iodides. Why?
Answer» SOLUTION :ORGANIC ethyl chlorides are more volatile than bromides and IODIDES.

13.	Organic compounds sometimes adjust their electronic as well as steric structure to attain stability. Among the following, the compound having highest dipole moment is :
Answer» ANSWER :D

14.	Organic compounds required in the diet in small amounts to perform specific biological functions for normal maintenance of optimum growth and health of the organism are called
Answer» NUCLEIC ACIDS. enzymes vitamins None of these. Answer :C

15.	Organic compounds containing amine as functional group are present in a vivid variety of compounds, namely amino acids, hormones, neurotransmitters, DNA, alkaloids, dyes, stc. Drugs including nicotine group in one form or another. Amines are basic because of the presence of lone pair of electrons on nitrogen. Addition of nitrogen into an organic framework leads to the formation of two families of molecules, namely amines and amides. As chemistry students, we must appreciate the versatility of nitrogen. Name the linkage formed when carboxyI end of one amino acid condenses with amino end of other amino acid.
Answer» SOLUTION :It is CALLED PEPTIDE LINKAGE.

16.	Organic compounds containing amine as functional group are present in a vivid variety of compounds, namely amino acids, hormones, neurotransmitters, DNA, alkaloids, dyes, stc. Drugs including nicotine group in one form or another. Amines are basic because of the presence of lone pair of electrons on nitrogen. Addition of nitrogen into an organic framework leads to the formation of two families of molecules, namely amines and amides. As chemistry students, we must appreciate the versatility of nitrogen. What are essential amino acids ?
Answer» Solution :AMINO ACIDS which cannot be synthesised by our body and MUST be PROVIDED through diet are CALLED essential amino acids.

17.	Organic compounds containing amine as functional group are present in a vivid variety of compounds, namely amino acids, hormones, neurotransmitters, DNA, alkaloids, dyes, stc. Drugs including nicotine group in one form or another. Amines are basic because of the presence of lone pair of electrons on nitrogen. Addition of nitrogen into an organic framework leads to the formation of two families of molecules, namely amines and amides. As chemistry students, we must appreciate the versatility of nitrogen. Why are amino acids amphoteric ?
Answer» Solution :These COMPOUNDS CONTAIN a basic (AMINO group) and an ACIDIC group (carboxylic group). Therefore, these compounds are amphoteric.

18.	Organic compounds containing amine as functional group are present in a vivid variety of compounds, namely amino acids, hormones, neurotransmitters, DNA, alkaloids, dyes, stc. Drugs including nicotine group in one form or another. Amines are basic because of the presence of lone pair of electrons on nitrogen. Addition of nitrogen into an organic framework leads to the formation of two families of molecules, namely amines and amides. As chemistry students, we must appreciate the versatility of nitrogen. Give one point of difference between acidic and basic amino acid.
Answer» Solution :If the NUMBER of carboxyl groups is more than the number of AMINO groups, it is an ACIDIC amino ACID. If the number of amino groups is more than of carboxyl groups, it is basic amino acid.

19.	Organic compounds containing amine as functional group are present in a vivid variety of compounds, namely amino acids, hormones, neurotransmitters, DNA, alkaloids, dyes, stc. Drugs including nicotine group in one form or another. Amines are basic because of the presence of lone pair of electrons on nitrogen. Addition of nitrogen into an organic framework leads to the formation of two families of molecules, namely amines and amides. As chemistry students, we must appreciate the versatility of nitrogen. What are amino acids ?
Answer» Solution :COMPOUNDS containing an AMINO group as well as a CARBOXYLIC group are called amino ACIDS.

20.	Organic compounds A, B and C are aliphatic saturated hydroxyl compounds when they react with Lucas reagent (anhyd.ZnCl_(2)+ conc.HCl ), the following observations are made(i) Compound A gave turbidity immediately.(ii) Compound B gave turbidity after five minutes(iii) Compound C gave turbidity only on heating. Identify the type of compound A, B and C.(b) Complete the equation:C_(6)H_(5)COOH + HOC_(6)H_(5) overset(H+)(to) (c) Name the main organic product formed when anisole is reacted with Hl.
Answer» Solution :A = Tertiary alcoholB = SECONDARY alcoholC = Primary alcohol (b) `C_(6)H_(5)COOH + HOC_(6)H_(5) overset(H+)(to) underset("Phenyl Benzoate")(C_(6)H_(5)-COO- C_(6)H_(5)COO) + H_(2)O` (c) Phenol

21.	Organic compound with molecular formula C_(3)H_(6)O has two isomers (A) and (B). (A) on heating with NaOH in I_(2) forms a yellow precipitate while (B) does not. Identify the isomers A and B and explain the reactions.
Answer» Solution :TWO POSSIBLE isomers of `C_(3)H_(6)O` are `underset("acetone")underset((A))(CH_(3)COCH_(3))andunderset("PROPANAL")underset((B))(CH_(3)CH_(2)CHO)` `underset("Acetone")underset((A))(CH_(3)COCH_(3))underset("Iodo form reaction")overset(I_(2)//NaOHDelta)tounderset("acetate")underset("Sodium")(CH_(3)COONa)+underset("Yellow ppt")underset("Iodoform")(CHI_(3))` `underset("Proponal")underset((B))(CH_(3)CH_(2)CHO)underset(Delta)overset(I_(2)//NaOH)to"No ppt of "CHI_(3)` Acetone answer Iodo form test whereas proponal does not.

22.	Organic catalysts differ from inorganic catalysts in
Answer» acting at a very high temperature being PROTEINS being CONSUMED in the reaction acting at very LOW temperature. Solution :Enzymes are proteins and ACT as biological ORGANIC catalysts.

23.	Orford process is used in extraction of
Answer» Fe Co PT Ni Solution :Orford process `RARR` During electrolytic refining of Ni from orford bottoms the Pt metal together with GOLD and silver collect as anode mud in concentrated form which is later PROCESSED to separate the metals.

24.	Ore pitch blende is main source of
Answer» Ra Ce Th Mg Answer :A::C

25.	"Ore" overset("Calcination")to "Residue" overset("dil.HNO"_(3))tounderset("Metal"(M)+Zn^(2+)(aq.))underset(darr"Zn dust")("aq. solution")above metallurgy is possible when ore is :-
Answer» `ZnCO_(3)` `CaCO_(3). MgCO_(3)` `CuCO_(3). Cu(OH)_(2)` PbS ANSWER :C

26.	Orford process is used in extraction of :
Answer» Fe Co Pt Ni Answer :D

27.	Ore of a metal M(X) to overset("roasting")to "Roasted ore" underset("absence of"O_(2))overset(Delta with (X)) to "Metal M" Ore of metal M(Y) to overset("calcination")to "Roasted ore" underset("absence of"O_(2))overset(Delta with (X)) to "Metal M"
Answer» X=chalcocite Y=malachite X=Galena Y=Cerussite X-Zinc BLENDE Y=Calamine a and B both are correct Answer :D

28.	Ores.
Answer» Solution :The minerals CONTAINING a high percentage of metals from which metals can be profitably EXTRACTED are called ORES.

29.	Ore like magnetite or tungstates in tin ores are concentrated by
Answer» FROTHFLOATATION MAGNETIC SEPARATION Gravity separation ELECTROSTATIC separation Answer :B

30.	Ore dressing is the process, in which __________.
Answer» ore SIZE is REDUCED to required size drying of ore TAKES PLACE removal of gangue material takes place treating the ore with alkali Answer :C

31.	………ore is concentrated by froth floatation process.
Answer» SOLUTION :SULPHIDE

32.	Oredressingof ironore is done by
Answer» FROTHFLOATATIONPROCESS Magneticseparation HAND PICKING Alltheabove. ANSWER :B

33.	Ordinary strong solution of HCl, HNO_3 and H_2 SO_4 contains roughly.
Answer» `1//5, 2//3` and `3//3` FRACTIONS of pure acid and water respectively `2//3, 1//5` and `3//3` fractions ofpure acid and water respectively `2//3,3//3` and `1//5` fractions of pure acid and water respectively None Solution :`HCL, HNO_3` and `H_2 SO_4` form AZEOTROPE at `20 %. 68 %` and `98 %` respectively by mass of acid. Therefore, `HCl` "contains" `~~ 20//100 = 1//5` `HNO_3 "contains" ~~ 68 //100 ~~ 2//3` `H_2 SO_4 "contains" ~~ 98//100 ~~ 2//3` Thus, ordinary strong solution of `HCl, HNO_3` and `H_2 SO_4` contains roughly `1//5, 2//3` and `3//3` fractions of pure acid and water respectively.

34.	Ordinary spirit is ……
Answer» Methanol ETHANOL Phenol Butan-1-ol Solution :Ethanol

35.	Ordinary oxygen contain how many isotopes of oxygen ?
Answer» Solution :`O_(8)^(16), O_(8)^(17), O_(8)^(18)`,…… THREE

36.	Ordinary light oscillates in_____plane passing through the line of propagation.
Answer» infinite two four three Solution :If we were to view a beam of ordinary light from one end and if we could actually see the PLANES in which the ELECTRICAL oscillations were OCCURRING, we could find that oscillations of the electric field were occurring in all possible planes perpendicular to the direction of propagation. The same WOULD be true of the MAGNETIC field.

37.	Ordinary soaps are defined as
Answer» Al SALTS of HIGHER FATTY acids Na salts of lowefattty acids Na salts of higher fatty acids Mg salts of lower fatty acids Answer :C

38.	Ordinary oxygen contains:
Answer» Only `O^16` isotope Only `O^17` isotope A MIXTURE of `O^16, O^17 and O^18` isotope Only `O^18` isotope Answer :C

39.	Ordinary hydrogen has preponderance of:
Answer» Hydrogen Deuterium Tritium All in EQUAL proportion Answer :A

40.	Ordinary hydrogen at room temperature is a mixture of
Answer» 25% or tho+75 % para 75% ORTHO +25% para 50% ortho + 50% para 10% orhto and 90%para Answer :D

41.	Ordinary blackboard chalk is made up of:
Answer» `CaCO_3` Gypsum Fluorspar `Ca_3(PO_4)_2` ANSWER :B

42.	Order of reactivity towards nucleophili substitution reaction of the compounds :
Answer» `(i) GT (II) gt (III) gt (IV)` `(ii) gt (i) gt (iii) gt (iv)` `(iv) gt (iii) gt (ii) gt (i)` `(iii) gt (iv) gt (ii) gt (i)` ANSWER :A

43.	Order of relativity of alkanes in substitution reaction is _____
Answer» ANSWER :TERTIARY > Secondaary > PRIMARY

44.	Order of stability of halogen oxides :-
Answer» `I LT Cl lt BR` `I gt Cl gt Br` `I lt Cl gt Br` `I gt Cl lt Br` Answer :B

45.	order of reactivity of C_2H_6, C_2H_4 and C_2H_2 is
Answer» `C_2H_6 GT C_2H_4 gt C_2H_2` `C_2H_2 gt C_2H_6 gt C_2H_4` `C_2 H_2 gt C_2H_4 gt C_2H_6` All are equally reactive Solution :Unsaturated hydrocarbons are more reactive than saturated hydrocarbons . Among ethyne `(C_2H_2)` and ETHENE `(C_2H_4)` , the later is more reactive as `C-=C` triple BOND is quite STRONG bond and therefore ethyne generally require catalysts (LIKE `Hg^(2+)` etc ) in its reactions

46.	Order of reactivity of hydrogen halides towards ethers is
Answer» `HCl GT HBR gt HI` `HI gt HBr gt HCl` `HBr gt HI gt HCl` `HBr gt HCl gt HI` Answer :B

47.	Orderof rateof electrophilicadditionreaction with HBrwill be :
Answer» `IV GT I gt III gt II` `I gt II gt III gt IV` `I gt III gt II gt IV` `IV gt I gt II gt III` Solution :Rate of eletrophilic addition `PROP`Nucleophilicity of ALKENE `prop`STABILITY of carbocation , so order`IV gt I gt II gt III `

48.	Order of reactivity is
Answer» `R-OVERSET(O)overset(\|\|)(C)-X gt RCONH_(2) gt RCOOCOR gt RCOOR` `RCOX gt RCOOCOR gt RCOOR gt RCONH_(2)` `RCOOR gt RCONH_(2) gt RCOX gt RCOOCOR` `RCOOCOR gt RCOOR gt RCOX gt RCONH_(2)` ANSWER :B

49.	Order of reaction is decided by
Answer» molecularity pressure temperature mechanism of reaction as well as RELATIVE CONCENTRATION of reactants. Solution :Order of a reaction is the sum of the exponents to which the molar concentrations are RAISED in the rate determining STEP. Order is determined BYTHE mechanism of reaction and concentration of ractants.

50.	orderof reactionis
Answer» neverzero never FRACTIONAL ALWAYS EQUALTO NUMBER of MOLECULES takingpart inreaction an experimentallydeterminedquantity Answer :D