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.	Test (Q). A compound 'X' was fused with Na metal and the extract gave a white precipitate with AgNO_(3). The Lassaigne's extract gave red colouration with neutral FeCl_(3). Test R while compound 'Y' when fused with Na metal and subsequent analysis on its Lassaigne's extract did not give any characteristic test. Test S while compound Y on fusion with fusion mixture (sodium carbonate+potassium nitrate) or Na_(2)O_(2), followed by extraction, followed by addition of conc. HNO_(3) and ammonium molybdate gave a yellow precipitate Q. Compound Y contain
Answer» N S X P Answer :D

2.	Test (Q). A compound 'X' was fused with Na metal and the extract gave a white precipitate with AgNO_(3). The Lassaigne's extract gave red colouration with neutral FeCl_(3). Test R while compound 'Y' when fused with Na metal and subsequent analysis on its Lassaigne's extract did not give any characteristic test. Test S while compound Y on fusion with fusion mixture (sodium carbonate+potassium nitrate) or Na_(2)O_(2), followed by extraction, followed by addition of conc. HNO_(3) and ammonium molybdate gave a yellow precipitate Q. Compound X
Answer» will CONTAIN halogens may contain halogens may contain only sulphur will contain nitrogen Answer :B

3.	Test (Q). A compound 'X' was fused with Na metal and the extract gave a white precipitate with AgNO_(3). The Lassaigne's extract gave red colouration with neutral FeCl_(3). Test R while compound 'Y' when fused with Na metal and subsequent analysis on its Lassaigne's extract did not give any characteristic test. Test S while compound Y on fusion with fusion mixture (sodium carbonate+potassium nitrate) or Na_(2)O_(2), followed by extraction, followed by addition of conc. HNO_(3) and ammonium molybdate gave a yellow precipitate Q. Compound X contains
Answer» N S N+S P Answer :C

4.	Terylene polymerises at 573 K in
Answer» PRESENCE of `O_2` Presence of `H_2` Presence of a and b Vaccum Answer :D

5.	Test for an ester is
Answer» Biuret TEST Hydroxamic acid test Mullicken test Liebermann NITROSO test Solution :Hydroxamic acid test is USED for an ESTER.

6.	Terylene is used for making
Answer» SAILS fabrics SEAT belts all of these Solution :We know that , terylene is very STRONG fibre. It is used for making sails, fabrics and seat belts.

7.	Terylene is of which type polymer ?
Answer» Co-POLYMER HOMOPOLYMER CONDENSATION polymer NONE of these SOLUTION :Co-polymer

8.	Terylene is the polymer of
Answer» ETHYLENE GLYCOL and terepthalic acid Melamine and formaldehyde Vinyl CHLORIDE and formaldehyde Hexamethylene diamine and adipic acid Answer :A

9.	Terylene is obtained by the condensation of
Answer» UREA and formaldehyde acrylic ACID and hexamethylenediamine ETHYLENEGLYCOL and PHTHALIC acid malonic acid and hexamethylenediamine Solution :ethyleneglycol and phthalic acid

10.	Terylene is NOT a
Answer» copolymer polyester fibre CHAIN GROWTH POLYMER STEP growth polymer Solution :TERYLENE is a step - growth , (i.e., condensation) polymer and not chain growth , (i.e., addition) polymer.

11.	Terylene is NOT
Answer» Copolymer Polyester FIBER CHAIN GROWTH polymer Step growth polymer Answer :C

12.	Terylene is formed by the reaction of one of the following alcohols:
Answer» 2-chloroethanol 1,2,3-propanetriol Ethanediol Phenol Answer :C

13.	Terylene is called a polyamide , true or false ?
Answer» SOLUTION :NYLON is a CALLED a POLYAMIDE.

14.	Terylene is a polymer obtained from
Answer» ethylene GLYCOL and glyerol ethylene glyocal andglyceraldehyde ethylene glycol and terephthalic acid NONE of the above Solution :Ethylene glycol on reaction with terephthalic acid forms the POLYMER terylene (ALSO known as dacron or terene) which is USED as synthetic fibre.

15.	Terylene is an example of
Answer» POLYAMIDE polythene POLYESTER POLY saccharide Solution :polyester

16.	Terylene is also known as
Answer» DACRON Mylor Cronar POLYESTER ANSWER :A

17.	Terylene is a polymer of:
Answer» Hexamethylene diamine and ADIPIC acid Phenol and FORMALDEHYDE ETHYLENE GLYCOL and terephthalic acid Butadiene + Styrene. Answer :C

18.	Terylene is a condensation product of ethylene glycol and
Answer» BENZOIC ACID Pnthalic acid Salicyclic acid Terephthalic acid ANSWER :A

19.	Terylene is a condensation polymer of ehtylene glycol and
Answer» BENZOIC ACID PHTHALIC acid SALICYLIC acid terephathalic acid. ANSWER :D

20.	Terylene is a condensation polymer of ethylene glycol and
Answer» BENZOIC acid phthalic acid salicyclic acid terephthalic acid Answer :D

21.	Terylene is a condensation polymer of …………….. and ………………
Answer» Solution :None is CORRECT Terylene is a condenoation POLYMERS of and ETHYLE slyod.

22.	Terylene is a:
Answer» POLYAMIDE Polyester Polyether Long CHAIN hydrocarbon Answer :B

23.	Terylene is a
Answer» POLYAMIDE Polyester Polyether Long CHAIN hydrocarbon Answer :B

24.	Terylene is
Answer» An addition polymer with a benzene ring in every repeating UNIT A condensation polymer with benzene ring in every repeating unit An addition polymer with TWO CARBON ATOMS in every repeating unit A condensation polymer with two nitrogen atoms in every repeating unit Answer :B

25.	Terylene filaments are formed by
Answer» Dehydration Oxidation Melt spinning Hydrolysis Solution :Molten MASS is passed through spinnerater under pressure into a COLD chamber to obtain FILAMENT of terylene .

26.	Terylene (Dacron) is the polyeter of:
Answer» Hexamethylenediamine and ADIPIC ACID Vinyl CHLORIDE and formaldehyde MELAMINE and formaldehyde Ethylene glycol and terephthalic acid ANSWER :D

27.	How is terylene prepared from glycol ?
Answer» PHTHALIC ACID adipic acid terephthalic acid FORMALDEHYDE Answer :C

28.	Tertiary structure of protein is stabilized by 1) hydrogen bond 2) ionic bond 3) sulphide bond 4) Vander Waals force
Answer» 2,4 1,2 1,2,4 1,2,3,4 Answer :D

29.	Terylene ,a polymer is produced by condensing ethylene glycol with
Answer» succinic ACID OXALIC acid D.M.T. phthalic acid ANSWER :C

30.	Tertiryaminecontains
Answer» `-NH_(2)` group `gt NH`group N group NONE of these Answer :C

31.	Tertiary structure of proteins represents___________.
Answer» sequence of AMINO acids shape of PROTEIN molecule folding of polypeptide chains association of ACID chains Answer :C

32.	Tertiary structures of proteins is given as
Answer» `ALPHA`-helix Fibrous `BETA`-pleated All of these Answer :B

33.	Tertiary structure of protein is arises due to
Answer» FOLDING of PRIMARY structure of protein folding and TWISTING of secondary structure linear sequence of amino acid in POLYPEPTIDE chain denatured proteins Answer :B

34.	Tertiary structure of a protein will lead the polypeptide chains to get the following shapes
Answer» LINEAR, octahedral angular, tetrahedral fibrous, globular fibrous, PLANAR ANSWER :C

35.	Tertiarynitroalkanedo notreactwith HNO_(2) because
Answer» It contains`ALPHA-`hydrogenatom in contains `beta-` hydrogenatom it DOESNOT CONTAIN `alpha-` hydrogen atom in containslone pairof electron Solution :`NO alpha- H` atom to tertiaryalkane

36.	Tertiary nitroalkane cannot tautomerise because
Answer» their tautomer forms are highly unstable they do not contain any MULTIPLE bond they do not have labil hydrogen they are not BASIC in nature. Solution :It is due to the absence of LABILE H-atom in tertiary nitro COMPOUNDS.

37.	Tertiary nitro compound can not show tautomerism because :
Answer» They are very STABLE Isomerises to GIVE sec, NITRO compounds Do not have labile H ATOM They are HIGHLY reactive Answer :C

38.	Tertiary nitro alkanes donot exhibit………………….. Due to the absence of alpha - H atom.
Answer» ANSWER :TAUTOMERISM

39.	Tertiary halides are the least reactive in S_(N)2 substitution reactions because bulky groups hinder the approaching nucleophiles.
Answer» ANSWER :1

40.	Tertiary butyl amine is a
Answer» PRIMARY amine secondary amine tertiary amine quaternary AMMONIUM salt Answer :A

41.	Tertiary amines do not undergo acylation. Give reason.
Answer» Solution :For acylation, the PRESENCE of HYDROGEN at the nitrogen atom is required . Since tertiary AMINE do not have hydrogen atom on their nitrogen they cannot undergo acylation.

42.	Tetiary butyl alcohol heated with conc. H_2SO_4and the alkene thus formed is subjected to ozonolysis. The products of ozonolysis are reduced with LiAIH_4. The final products is/ are
Answer» 2- Methylpropan -2- OL MIXTURE of methanol +ETHANOL mixture of 2- propanol +methanol Mixture of ethanol +formic ACID Answer :C

43.	Tertiary butyl alcohol gives tertiary butyl chloride on treatment with
Answer» Conc. HCL/anhydrous `ZnCl_(2)` KCN NaOCl `Cl_(2)` Solution :`underset(t-"BUTYL alcohol")(H_(3)C-underset(CH_(3))underset(\|)OVERSET(CH_(3))overset(\|)C-OH)underset(ZnCl_(2))overset("conc." HCl)tounderset(t-"butyl chloride")(H_(3)C-underset(CH_(3))underset(\|)overset(CH_(3))overset(\|)C-CL)`

44.	Tertiary amines may be obtained by :
Answer» GABRIEL phthalimide synthesis Heating an alcoholic solution of ammonia with excess of RX The HYDROLYSIS of DIALKYL cyanamide Thermal DECOMPOSITION of quaternary AMMONIUM hydroxide Solution :Primary amines are produced by Gabriel pthalimide synthesis, Dialkyl cyanamide on hydrolysis gives `2^(@)` amines

45.	Tertiary amine is oxidized to oxide by
Answer» `KMnO_(4)` `H_(2)O_(2)` `K_(2)Cr_(2)O_(7)` all of theses Answer :B

46.	Tertiary amine is less bsic than secondary amine because of
Answer» DELOCALISATION of `PI` electrons resonance effect inductive effect steric effect Answer :D

47.	Tertiary aminecan beobtainedby
Answer» Gabrielpthalimidesynthesis HYDROLYSIS Thermaldecomposition of quaternaryammoniumsalt Reducutionof nitroalkaneby `Zn + NH_(4)Cl` ANSWER :C

48.	Tertiary alkyl halides are practically inter to substitution by SN^(2) mechanism because of
Answer» INSTABILITY insolubility steric HINDRANCE INDUCTIVE effect Answer :C

49.	Tertiary amines dissolve in cold nitrous acid to form salt which on warming decomposes to give:
Answer» `R_(3)N.HNO_(2)` `R_(2)N.NO` `ROH` `R_(2)N.NO+ROH` ANSWER :D

50.	Tertiary alkyl halides are practically inert to substitution by S_(N^(2)) mechanism because of
Answer» insolubility instability inductive effect steric hindrance. Solution :Since steric hindrance is MAXIMUM in tertiary alkyl halides, the attacking nulceophile will get little opportunity to attack the SUBSTRATE. Therefore, `S_(N^(2))` MECHANISM is not FAVOURED.