94420 + Interview Questions in Chemistry in Class 12

1.	{:("LIST - 1","LIST - 2"),("A) Electronic conductor","1) Aqueous urea solution"),("B) Non-electrolyte ","2) Solid sodium"),("C) Electrolytic dissociation","3) Electrolytic conductor"),("D) Arrhenius ","4)Radioactivity increases"),(,"5) Conductivity raises with temperature"):} The correct match is
Answer» `{:(A,B,C,D),(5,1,2,3):}` `{:(A,B,C,D),(5,2,1,4):}` `{:(A,B,C,D),(2,1,5,3):}` `{:(A,B,C,D),(2,5,1,4):}`

Discussion

2.	{:("LIST - 1","LIST - 2 "),("A) One faraday","1) Reduction"),("B) Anode","2) 96500 coulomb"),("C) Cathode","3)" 6.24xx10^(18) " electrons"),("D) One coulomb","4) Oxidation"),(,"5) "Z xx "96,500"):} The correct match is
Answer» `{:("A","B","C","D"),(5,4,2,3):}` `{:("A","B","C","D"),(2,4,1,3):}` `{:("A","B","C","D"),(2,4,1,5):}` `{:("A","B","C","D"),(5,2,1,3):}`

Discussion

3.	……………. Linkages are present in carbohydrates .
Answer» SOLUTION :GLYCOSIDIC LINKAGES are PRESENT in CARBOHYDRATES.

Discussion

4.	(-)-Lactic acid (0.5mol) is mixed with (+)- lactic acid (1 mol). Predict whether the mixture will be optically active or not.
Answer» SOLUTION :REMAINS OPTICALLY ACTIVE

Discussion

5.	_______is widely used to prevent heart attacks
Answer» ANSWER :ASPIRIN

Discussion

6.	_________ is used to remove rust marks because it reacts with the __________ ion present in the rust and forms a soluble complex in water.
Answer» SOLUTION :OXALIC ACID, `FE^(3+)`

Discussion

7.	………………………IS used to prepare a secondary alcohol with identical group.
Answer» SOLUTION :FORMATE ESTER

Discussion

8.	........... is used to decolourising agent in manufacture of sugar from molasses.
Answer» SOLUTION :ANIMAL CHARCOAL

Discussion

9.	________ is used to denature ethanol.
Answer» METHANOL PROPANOL Acetic ACID ACETALDEHYDE ANSWER :A

Discussion

10.	........... is used to create high vaccum in vessels.
Answer» SOLUTION :ACTIVATED CHARCOAL

Discussion

11.	........ is used only for cold foods and soft drinks.
Answer» Saccharin ASPARTAME Sucrolose Alitame SOLUTION :Aspartame

Discussion

12.	............... is used to convert acetic acid to ethane at 473 K.
Answer» <P> SOLUTION :HI + RED P

Discussion

13.	______ is used in the treatment of lead poisoning.
Answer» ANSWER :EDTA

Discussion

14.	............... is used in the preparation of artificial fruit essences.
Answer» SOLUTION :ETHYL ACETATE

Discussion

15.	__________ is used in the manufacture of thermo softening plastic perspex.
Answer» acetaldehyde acetone acetophenone benzophenone Answer :B

Discussion

16.	................. is used in the detection and estimation of -OH, -NH_2 , groups in organic compounds.
Answer» SOLUTION :ACETYL CHLORIDE

Discussion

17.	............. is used in perfumery and as a hypnotic under the name hyphone
Answer» SOLUTION :ACETOPHENONE

Discussion

18.	…….. is used in leather tanneries for chrome tanning.
Answer» SOLUTION :POTASSIUM DICHROMATE

Discussion

19.	___________ is used in dry cell.
Answer» CU ZN Fe Al Solution :Zn is ANODE

Discussion

20.	__________ is used in estimation of iodine number of fats and oils .
Answer» `I_2` ICI `ICI_3` `IF_7` ANSWER :B

Discussion

21.	………………….. Is used for water proofing and textiles.
Answer» ANSWER :POTASH ALUM

Discussion

22.	………… is used for the manufacture of petrol by cracking the mineral oils.
Answer» ANSWER :`AlCl_(3)`

Discussion

23.	_______ is used for the treatment of gout
Answer» FORMIC acid Acetic acid Acetylchloride Acetic anhydride Answer :A

Discussion

24.	………………………… is used for the identification of coloured metal ions.
Answer» ANSWER :BORAX

Discussion

25.	........ is used for the treatment of skin infections and fungal infections of the foot.
Answer» SOLUTION : POTASSIUM PERMANGANATE

Discussion

26.	……….. Is used for increasing the efficiency of solar cells and also used as catalysts.
Answer» SOLUTION :GOLD NANOPARTICLE

Discussion

27.	________ is used as the starting material for the preparation of iodoform .
Answer» METHYL ALCOHOL ETHYL alcohol n-Propyl alcohol n-Butyl alcohol ANSWER :B

Discussion

28.	………………… is used as refrigerant.
Answer» SOLUTION :DIETHYL ETHER

Discussion

29.	................. is used as food preservative
Answer» SOLUTION :SODIUM BENZOATE

Discussion

30.	____________ is used as cryogenic agent for carrying out various experiments at low temeperatures.
Answer» LIQUID xenon Liquid argon Liquid helium Liquid krypton Answer :C

Discussion

31.	_________ is used as an ingredient in mouth washes.
Answer» METHANOL Ethanol Propanol BUTANOL ANSWER :B

Discussion

32.	__________ is usedas an anti-freeze in automobiles .
Answer» ETHANOL PROPANOL Methanol Benzyl ALCOHOL ANSWER :C

Discussion

33.	…………………. is used as an anti-freezer in automobile radiators.
Answer» SOLUTION :ETHYLENE GLYCOL

Discussion

34.	.......... is used as adsorbent in froth floatation method ?
Answer» SILICON gel Charcoal TURPENTINE Alumina SOLUTION :Turpentine

Discussion

35.	………………….is used as a surgical anesthetic agent in surgery.
Answer» SOLUTION :DIETHYL ETHER

Discussion

36.	………………… is used as a sweetening agent in contfectionery and beverages.
Answer» SOLUTION :GLYCEROL

Discussion

37.	................... is used as a substitute of wool for making blankets, sweaters .
Answer» SOLUTION :ORLON ( or ) PAN

Discussion

38.	……………………..is used as a substitute for petrol under the name …………………. and used as fuel for aeroplane.
Answer» SOLUTION :ETHANOL, POWER ALCOHOL

Discussion

39.	…………………….. Is used as a rocket fuel igniter.
Answer» ANSWER :AMORPHOUS BORON

Discussion

40.	__________ is the study of chemical reactions with respect to reaction rates, effects of various variables, etc.
Answer» SOLUTION :CHEMICAL KINETICS

Discussion

41.	_________ is the reciprocal of resistance.
Answer» SPECIFIC conductance molar conductance specific resistance conductance Answer :D

Discussion

42.	……………… is the most stable alotropic form of carbon at normal temperature and pressure.
Answer» ANSWER :GRAPHITE

Discussion

43.	………………….. is the most powerful tool for the determinaiton of crystal structure.
Answer» SOLUTION :X - RAY DIFFRACTION ANALYSIS

Discussion

44.	………………. Is the general electronic configuration of tetragen elements.
Answer» ANSWER :`NS^(2)NP^(2)`

Discussion

45.	_________ is the element of the first transition series that exhibit the highest number of oxidation states.
Answer» SOLUTION :MANGANESE

Discussion

46.	……… is the compound which can remove both oxygen and nitrogen of the air when it as passed over it at 1000ᵒC:
Answer» `CaC_2` `CaCl_2` `CaCN_2` `CA(CN_2)` ANSWER :A

Discussion

47.	......... is the compound which can remove both nitrogen and oxygen of the air when it is passed over it at 1000^@C:
Answer» `CaC_2 & C ` `CaCl_2` `CaCN_2` `CA(CN)_2` SOLUTION :`CaC_2 + N_2 OVERSET(DELTA)to CaCN_2+ C_("(graphite)"), C + O_2 to CO_2`

Discussion

48.	_______ is the branch of chemistry which deals with the treatment of diseases using chemicals
Answer» ANSWER :CHEMOTHERAPY

Discussion

49.	…………………… is the best reagent to prepare unsaturated alcohol by reduction reaction of carbonyl compound.
Answer» SOLUTION :`LiAlH_4`

Discussion

50.	…… is the best conductor of electricity among coinage metals:
Answer» Ag Cu Au All Answer :A

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

{:("LIST - 1","LIST - 2"),("A) Electronic conductor","1) Aqueous urea solution"),("B) Non-electrolyte ","2) Solid sodium"),("C) Electrolytic dissociation","3) Electrolytic conductor"),("D) Arrhenius ","4)Radioactivity increases"),(,"5) Conductivity raises with temperature"):} The correct match is

{:("LIST - 1","LIST - 2 "),("A) One faraday","1) Reduction"),("B) Anode","2) 96500 coulomb"),("C) Cathode","3)" 6.24xx10^(18) " electrons"),("D) One coulomb","4) Oxidation"),(,"5) "Z xx "96,500"):} The correct match is

……………. Linkages are present in carbohydrates .

(-)-Lactic acid (0.5mol) is mixed with (+)- lactic acid (1 mol). Predict whether the mixture will be optically active or not.

_______is widely used to prevent heart attacks

_________ is used to remove rust marks because it reacts with the __________ ion present in the rust and forms a soluble complex in water.

………………………IS used to prepare a secondary alcohol with identical group.

........... is used to decolourising agent in manufacture of sugar from molasses.

________ is used to denature ethanol.

........... is used to create high vaccum in vessels.

........ is used only for cold foods and soft drinks.

............... is used to convert acetic acid to ethane at 473 K.

______ is used in the treatment of lead poisoning.

............... is used in the preparation of artificial fruit essences.

__________ is used in the manufacture of thermo softening plastic perspex.

................. is used in the detection and estimation of -OH, -NH_2 , groups in organic compounds.

............. is used in perfumery and as a hypnotic under the name hyphone

…….. is used in leather tanneries for chrome tanning.

___________ is used in dry cell.

__________ is used in estimation of iodine number of fats and oils .

………………….. Is used for water proofing and textiles.

………… is used for the manufacture of petrol by cracking the mineral oils.

_______ is used for the treatment of gout

………………………… is used for the identification of coloured metal ions.

........ is used for the treatment of skin infections and fungal infections of the foot.

……….. Is used for increasing the efficiency of solar cells and also used as catalysts.

________ is used as the starting material for the preparation of iodoform .

………………… is used as refrigerant.

................. is used as food preservative

____________ is used as cryogenic agent for carrying out various experiments at low temeperatures.

_________ is used as an ingredient in mouth washes.

__________ is usedas an anti-freeze in automobiles .

…………………. is used as an anti-freezer in automobile radiators.

.......... is used as adsorbent in froth floatation method ?

………………….is used as a surgical anesthetic agent in surgery.

………………… is used as a sweetening agent in contfectionery and beverages.

................... is used as a substitute of wool for making blankets, sweaters .

……………………..is used as a substitute for petrol under the name …………………. and used as fuel for aeroplane.

…………………….. Is used as a rocket fuel igniter.

__________ is the study of chemical reactions with respect to reaction rates, effects of various variables, etc.

_________ is the reciprocal of resistance.

……………… is the most stable alotropic form of carbon at normal temperature and pressure.

………………….. is the most powerful tool for the determinaiton of crystal structure.

………………. Is the general electronic configuration of tetragen elements.

_________ is the element of the first transition series that exhibit the highest number of oxidation states.

……… is the compound which can remove both oxygen and nitrogen of the air when it as passed over it at 1000ᵒC:

......... is the compound which can remove both nitrogen and oxygen of the air when it is passed over it at 1000^@C:

_______ is the branch of chemistry which deals with the treatment of diseases using chemicals

…………………… is the best reagent to prepare unsaturated alcohol by reduction reaction of carbonyl compound.

…… is the best conductor of electricity among coinage metals:

_ is used to remove rust marks because it reacts with the __ ion present in the rust and forms a soluble complex in water.