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.	DDT (p,p-Dichlorodiphenyl trichloroethane).
Answer» Solution :DDT is used as INSECTICIDE against MALARIA. (2) It is used to KILL various INSECTS like houseflies and mosquitoes.

2.	DDT stands for_____.
Answer» <P> SOLUTION :p,p'-dichlorodiphenyltrichloroethane.

3.	D.D.T. is prepared by heating chlorobenzene with :
Answer» chloroform chloral aniline chloropicrin Answer :B

4.	DDT is manufactued by acid catalysed condensation of :
Answer» CHLOROFORM and ACETONE Chloroform and NITRIC acid Chlorobenzene and chloral Chlorobenzene and chloroform Answer :C

5.	DDT is formed from
Answer» BENZENE and CHLOROBENZENE CHLORAL and Chlorobenzene Chloral and Benzene Chlorobenzene and chlorine. Solution :D.D.T. is PREPARED by REACTION of chloral and chlorobenzene

6.	DDT is a ________ type of pollutant.
Answer» ANSWER :A::B::D

7.	D.D.T. is
Answer» An INSECTICIDE BLEACHING AGENT Hypnotic Oxidising agent SOLUTION :Insecticide.

8.	D.D.Tis
Answer» Anantibiotic Blodegradable polutant NON - biodegradablepollutant Not a POLLUTANT ANSWER :C

9.	DDT is :
Answer» GREEN HOUSE gas degradable pollutant nondegradable pollutant none FO the above Answer :C

10.	DDT and BHC may act as :
Answer» Allergens Carciongens Asthematic agents None of these Answer :B

11.	(dc)/(dt) of a first order reaction depends on
Answer» TIME CONCENTRATION TEMPERATURE All ANSWER :D

12.	Davy and Faraday proved that
Answer» DIAMOND is a form of carbon. The BOND lengths of carbon CONTAINING compounds are always equal The strength of graphite is minimum compared to PLATINUM Graphite is very HARD. Answer :A

13.	Dative Bond is present in :-
Answer» `KI_(3)` `KNO_(2)` `KHF_(2)` All ANSWER :A

14.	Dark red tongue, fissuring at corners of mouth and lips are the symptoms of the deficiency of which vitamin
Answer» C A `B_(2)` D Answer :C

15.	Daniell cell is a galvanic cell made of zinc and copper electrodes. write the overall cell reaction in H_2-O_2 fuel cell.
Answer» SOLUTION :The OVERALL CELL REACTION in `H_2-O_2`FUEL cell is `2H_+O_2 to 2H_2O`

16.	Daniell cell is a galvanic cell made of zinc and copper electrodes. Write anode and cathode reactions in Daniel cell
Answer» Solution :Daniell cell can be REPRESENTED as `Zn\|Zn^(2+)\|\|CU^(2+)\|Cu` ANODE reaction :`Zn(s)to Zn^(2+)(AQ)+2e^-` Cathode reaction `Cu^(2+)(aq)+2e^(-)to Cu(s)`

17.	Daniell cell is a galvanic cell made of zinc and copper electrodes. What is a fuel cell ?
Answer» Solution :A fuel cell is a device that convert the ENERGY produced by the combustion of fuel into electrical energy. The fuel USED are `H_2,CH_4,CO,`etc.The common fuel cell is `H_2-O_2`fuel cell

18.	Daniel cell is
Answer» IRREVERSIBLE voltaic cell reversible voltaic cell reversible SECONDARY cell irreversible secondary cell Solution :Daniel cell can be recharged.

19.	Dalton's law of partial pressures is applicable to which one of the following systems?
Answer» `NH_(3) + HCI` `NO + O_(2)` `H_(2) + CI_(2)` `CO + H_(2)` Solution :Dalton's LAW of PARTIAL pressure is APPLICABLE to non-reaction GASES.

20.	Dalton's law of partial pressures acids to evolve chlorine. states that total pressure is the sum Reason : The chlorine liberated by the action of partial pressures.
Answer» if both ASSERTION and reason are true and reason is thr correct EXPLANATIONOF 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 reson are false. SOLUTION :`E =- (2pik^2m_e^4)/(n^2h^2)` where n = principal QUANTUM number which has only intergal value. It follows that total ENERGY is qunatized .

21.	Dalton's law of partial pressure is not applicable to, at normal conditions
Answer» `H_(2) and N_(2)` mixture `H_(2) and Cl_(2)` mixture `H_(2) and CO_(2)` mixture `H_(2) and O_(2)` mixture Solution :`H_(2) and Cl_(2)` reacts to form HCl, Dalton.s LAW of partial pressure is VALID only for the gases which don.t react at ordinary conditions Hence, (B) is the correct answer.

22.	Dalton's law of partial pressure is not applicable to :
Answer» `H_2 and N_2` MIXTURE `H_2 and Cl_2` mixture `H_2 and CO_2` mixture None Answer :B

23.	Dacron is obtained by the condensation polymerisation of:
Answer» Dimethyl terephthalate and ethylene GLYCOL Terephthalic acid and formaldehyde Phenol and phthalic acid Phenol and formaldehyde Solution :The polymer of ethylene glycol and tere-phthalic acid is KNOWN as TERYLENE or DACRON.

24.	Daily use candles (paraffin wax) contain
Answer» HIGHER SATURATED hydrocarbon Lower saturated hydrocarbon Higher UNSATURATED hydrocarbon Lower unsaturated hydrocarbon Answer :A

25.	Dacron is obtained by the condensation polymerisation of
Answer» dimethyl terephthalate and ethylene glycol terephthalic acid and formaldehyde phenol and PHTHALIC acid phenol and formaldehyde Solution :Dacron is obtained by the CONDENSATION POLYMERISATION of dimethyl terephthalate and ethylene glycol.

26.	Dacron is an example of:
Answer» POLYAMIDES polypropenes polyacrylonitrile POLYESTERS . Solution :Dacron is an example of polysters. It is prepared by heating a mixture of ehtylene GLYCOL and terephthalic ACID .

27.	Dacron is a condensation polymer of terephthalic acid and …………….. :
Answer» ETHYLENE glycol Aniline Benzyl alcohol Formaldehyde. Answer :A

28.	Dacron ,a synthetic polyester fibre is made from
Answer» ester of terephthlic acid and ethylene GLYCOL Phthalic acid and cellulose CAPROLACTUM and ALCOHOL alcohol and ETHENE. ANSWER :A

29.	Dacron is a -
Answer» CREASE resistant polyamide addition POLYMER polymer of ethylene glycol and phthalic ACID Solution :DACRON is a POLYESTER and is the condensation polymer of ethylene glycol and terephthalic acid. It is a crease resistant

30.	Dacron fibre is used
Answer» in BLENDING with COTTON fibres. in blending with WOOL fibres. as glass REINFORCING material. all the above Answer :D

31.	d^(2)sp^(3) hybridisation of the atomic orbitals gives :
Answer» SQUARE PLANAR STRUCTURE Triangular structure Tetrahedral structure OCTAHEDRAL structure Answer :D

32.	D underset((A))("Glucopyranose") underset("dry HCl")overset(MeOH)rarr B underset(Me_(2)SO_(4)//OH^(-))overset("Excess of")rarr C overset("Dil.HCl")rarr underset(underset(2, "3-Dimethoxy succinic acid (E )+2, 3, 4-Tri methoxy glutaric acid [F]")(darr HNO_(3)("oxidation")))D Which of the following statements are true about the product E & F ? (I) The product (E ) is obtained by the breakage of C-4 and C-5 bond of compound ''D'' (II) The product (E) obtained by the breakage of C-5 & C-6 bond of compound ''D'' (III) The product (F ) is obtained by the breakage of C-4 and C-5 bond of compound (D) (IV) The product (F )is obtained by the breakage of C-5 and C-6 bond of compound D
Answer» I, II I, II, III I, IV I, III Solution :

33.	Write an equation for the formation of a dipeptide between
Answer» SOLUTION :

34.	d-tartaric acid and l-tartaric acid are:
Answer» STRUCTURAL isomers Diastereoisomers Tautomers Enantiomers Answer :D

35.	d pi- p pi bonding is possible in
Answer» `NO_(overset(-)3), NO_(overset(-)2), N^(3-),CN^(-)` `NH_(3),PH_(3),BiH_(3)` `P_(2)O_(3), P_(2)O_(5), PO_(4)^(3-)` `CO,NO,CO_(2),NO_(2)` Answer :C

36.	D - overset(O)overset(\|\|)(C )-D overset(50%KOH)(rarr) order of the reaction is :
Answer» 2 3 4 1 Answer :B

37.	d- orbital with maximum electron density along two axes will be
Answer» `d_(YZ)` `d_(Z^2)` `d_(x^2-y^2)` `d_(XY)` ANSWER :C

38.	D on long standing turn to yellow then to brown and finally to a precipitate F. D and F are respectively:
Answer» `Ag_(2)S_(2)O_(3) "(while PPT)", AG"(BLACK ppt.)"` `Ag_(2)S_(2)O_(3)"(black ppt.)",Ag_(2)S"(white ppt.)"` `Ag_(2)S"(black ppt.)",Ag_(2)S_(2)O_(3)"(white ppt)"` `Ag_(2)S_(2)O_(3)"(white ppt.)",Ag_(2)S"(black ppt.)"` ANSWER :D

39.	D-mannose is epimeric wtih D-glucose at C_2. Which of the following structure represents beta - D - mannopyranose?
Answer» ANSWER :C

40.	D-Mannose and D-Glucose are ……………..
Answer» C2 EPIMERS C4 epimers C3 epimers C5 epimers Solution :C2 epimers D-Glucose and D-Mannose DIFFERS in the POSITION of -OH group at C2 only.

41.	(D) is dissolved in dil. HNO3 and the resulting solution gives a white precipitate (E) with dil. HCl.
Answer» Solution :`(A) -Ag_(2)S` (B) `-NaAg(CN)_(2)` (C) `-Na_(2)SO_(4)` (D) `Ag` (E) `AgCl` (F) `-Ag(NH_(3))_(2)CL` `3Ag+4HNO_(3) rarr 3AgNO_(3)+NO+underset(HCL)(2H_(2)O)`

42.	D is a dicarboxylic acid and gives only one monosubstituted product. Study the sequence of reactions above and answer the following questionsThe compound 'D' is likely to be
Answer» any of the above Solution :

43.	D is a dicarboxylic acid and gives only one monosubstituted product. Study the sequence of reactions above and answer the following questionsCompound 'A' is
Answer» SOLUTION :

44.	D is a dicarboxylic acid and gives only one monosubstituted product. Study the sequence of reactions above and answer the following questionsThe structure of 'B' is
Answer» SOLUTION :

45.	D is :
Answer» ANSWER :C

46.	D-Glucose with alkaline Cut gives .
Answer» GLUCONIC acid Saccharic acid n-Hexane Hexanedioc acid Solution :Gluconic acid GLUCOSE reduces Fehling.s solution and OXIDIZE to form Gluconic acid

47.	D is :
Answer» SOLUTION :N//A

48.	D-Glucose with excess HIO_(4) gives …………………..
Answer» 5 MOLES of FORMIC acid + 1 mol of FORMALDEHYDE. 5 moles of formaldehyde + 1 mol of formic acid. 4 moles of formic acid + 2 moles of formaldehyde. 4 moles of formaldehyde + 2 moles of formic Solution :5 moles of formic acid + 1 mol of formaldehyde.

49.	D-Glucose will form same osazone with
Answer» D-Mannose D-Fructose D-Allose Both (A) and (B) ANSWER :D

50.	D-Glucose upon treatment with bromine-water gives :
Answer» SOLUTION :