94420 + Interview Questions in Chemistry in Class 12

1.	……………………..is the appearance of an electrical potential across the sides of the crystal, when it is subjected to mechanical stress.
Answer» SOLUTION :PIEZOELECTRICITY

Discussion

2.	……………………. Is suspected to cause genetic damage and be harmful to the nervous system.
Answer» ANSWER :NITRO ETHANE

Discussion

3.	………… is purified by zone refining
Answer» Ge Cu Fe Zn Solution :semi-conductior

Discussion

4.	………. Is produced when a positron and an electron collide.
Answer» X-ray Neutron `GAMMA`-radiation Neutrino Answer :C

Discussion

5.	…….. is obtained when 1- chloro butane reacts with alcoholic potash ?
Answer» 1-butanol 2-butene 1-butene 2-butanol SOLUTION :

Discussion

6.	…………………… is present abundantly in fruits and hence it is also called fruit sugar.
Answer» SOLUTION :FRUCTOSE

Discussion

7.	_____ is natural elastomer.
Answer» Polyisoprene Polyster Chloroprene None Solution :NATURAL RUBBER

Discussion

8.	. . . . . . . Is measured by Wheatstone bridge.
Answer» Conductivity RESISTANCE Quantity of electricity emf Solution :Resistance.

Discussion

9.	……………………….. Is most reactive element among the halogens.
Answer» ANSWER :FLUORINE

Discussion

10.	________ is isolated from defensivesecretion of a species of grasshopper.
Answer» GLYCEROL Thymol Bombykol SORBITOL. ANSWER :B

Discussion

11.	"_______" is known asBayer'sreagent
Answer» Hotdilutealkaline`KMnO_(4)` Colddilutealkaline `KMnO_(4)` Hotconc.Acidic`KMnO_(4)` Coldconc.Acidic`KMnO_(4)` ANSWER :B

Discussion

12.	.......... is irreversible adsorption.
Answer» PHYSICAL adsorption Chemical adsorption Chemisorption (B) and (C) both SOLUTION :(D) (B) and (C) both

Discussion

13.	…………………. Is inorganic benzene.
Answer» ANSWER :Boranzine

Discussion

14.	.......... is example of solid sol.
Answer» COLOUR particles GEM STONE Smoke Jellies SOLUTION :Gem stone

Discussion

15.	.......... is example of Gel.
Answer» Fog Hair cream CHEESE Foam RUBBER SOLUTION :Cheese

Discussion

16.	.......... is example of sol.
Answer» COLOURED glass PAINTS and CELL FLUIDS Smoke Jellies Solution :Paints and cell fluids

Discussion

17.	…………………………. Is essential for the cell walls of plants.
Answer» ANSWER :BORON

Discussion

18.	........... is employed in the softening of hard water to adsorb Ca^(2+) and Mg^(2+)ions
Answer» SOLUTION :PERMUTIT

Discussion

19.	.................. Is defined as the resistance of an electrolyte confined between two electrons having unit cross sectional area and separated by a unit distance
Answer» SOLUTION :SPECIFIC RESISTANCE (or) RESISTIVITY

Discussion

20.	............................ Is defined as the amount of a substance deposited or liberated at the electrode bya charge of 1 Coulomb.
Answer» SOLUTION :ELECTRO CHEMICAL EQUIVALENT

Discussion

21.	........... is defined as a substance which alters the rate of a chemical reaction without itself undergoing chemical change.
Answer» SOLUTION :CATALYST

Discussion

22.	____________ is concentration by froth flotation process in metallurgy of copper
Answer» Cuprite CHALCOCITE MALACHITE Haematite ANSWER :B

Discussion

23.	…………….. Is carcinogenic silicates.
Answer» ANSWER :ASBESTOS

Discussion

24.	……………………….. Is an organic compound needed to maintan the health of nerves, skin and red blod cells.
Answer» ANSWER :PYRIDOXINE, VITAMIN `B_(6)`

Discussion

25.	_____ is an example of O/W type emulsion.
Answer» butter cream milk curd Answer :D

Discussion

26.	______ is an example of non-protein amino acid.
Answer» ORINITHINE GLYCINE ALANINE LYSINE SOLUTION :Orinithine

Discussion

27.	______ is an example of fibrous protein.
Answer» KERATIN COLLAGEN myoglobin both (a) and (B) SOLUTION :both (a) and (b)

Discussion

28.	.............. is ammoniacal silver nitrate solution.
Answer» SOLUTION : Tollen.s REAGENT

Discussion

29.	........ is amorphous solid.
Answer» Liquids in true MEANS Chilled liquids SOLIDS in true means SUBSTANCE with definite melting points Answer :B

Discussion

30.	____ is also know as green oil.
Answer» ANSWER :ANTHRACENE.

Discussion

31.	………………… is allotropic form of carbon has aromatic character.
Answer» ANSWER : FULLERENE

Discussion

32.	........ is added to soap to develop the antiseptic properties.
Answer» Terpineol BITHIONOL Iodine All of these SOLUTION :Bithionol

Discussion

33.	Flux added in the extraction of iron is
Answer» SILICA Feldspar limestone Alumina Answer :C

Discussion

34.	........... is added to gold sol to protect it.
Answer» SOLUTION :GELATINE SOL

Discussion

35.	........... is added as an stabilising agent for making platinum colloid.
Answer» SOLUTION :ALKALI HYDROXIDE

Discussion

36.	.................... is a sodium salt alkyl hydrogen sulphate or alkyl benzene sulphonic acid.
Answer» SOLUTION :DETERGENT

Discussion

37.	................... Is a process in which electrical energy is used to cause a non-spontaneous chemical reaction.
Answer» SOLUTION :ELECTROLYSIS

Discussion

38.	.................... is a monomer which polymerises to give nylon-6.
Answer» SOLUTION :CAPROLACTAM

Discussion

39.	.......... is a lyophilic sol.
Answer» gum sulphul sol milk Blood Answer :A

Discussion

40.	............ is a mixture of CuSO_4+ Sodium citrate + NaOH.
Answer» SOLUTION :Benedict.s solution

Discussion

41.	.......... is a hydrophilic sol.
Answer» STARCH SOLUTION SILVER iodide Magnesium sulphate Arsenic SULFIDE ANSWER :A

Discussion

42.	…………………… is a good reducing agent.
Answer» contains replaceable `H^(+)` ion `CO_(2)` `[Cr(CO)_(6)]` `[Ni(CO)_(4)]` Answer :A

Discussion

43.	................... Is a device that converts electrical energy into chemical energy.
Answer» SOLUTION :ELECTROLYTIC CELL

Discussion

44.	................Is a device in which a spontaneous chemical reactoin generates an electric current.
Answer» SOLUTION :GALVANIC (or) VOLTAIC CELL

Discussion

45.	………………….. is a component of many lubricants for example cycle chain oil.
Answer» SOLUTION :GRAPHITE

Discussion

46.	……………… is a chemical formula of boron.
Answer» Answer :`Na_(2)B_(4)O_(7).10H_(2)O`

Discussion

47.	.......... is a carbonate ore.
Answer» PYROLUSITE MALACHITE Casiterites DIASPORES ANSWER :B

Discussion

48.	........... involves the formation of activated complex with appreciable activation energy.
Answer» SOLUTION :CHEMISORPTION

Discussion

49.	........... introduced the term gold number as a measure of protecting power of a colloid.
Answer» SOLUTION :ZSIGMONDY

Discussion

50.	........... inhibits the action of bacteria and used for curing pneumonia.
Answer» SOLUTION : PENICILLIN

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

……………………..is the appearance of an electrical potential across the sides of the crystal, when it is subjected to mechanical stress.

……………………. Is suspected to cause genetic damage and be harmful to the nervous system.

………… is purified by zone refining

………. Is produced when a positron and an electron collide.

…….. is obtained when 1- chloro butane reacts with alcoholic potash ?

…………………… is present abundantly in fruits and hence it is also called fruit sugar.

_____ is natural elastomer.

. . . . . . . Is measured by Wheatstone bridge.

……………………….. Is most reactive element among the halogens.

________ is isolated from defensivesecretion of a species of grasshopper.

"_______" is known asBayer'sreagent

.......... is irreversible adsorption.

…………………. Is inorganic benzene.

.......... is example of solid sol.

.......... is example of Gel.

.......... is example of sol.

…………………………. Is essential for the cell walls of plants.

........... is employed in the softening of hard water to adsorb Ca^(2+) and Mg^(2+)ions

.................. Is defined as the resistance of an electrolyte confined between two electrons having unit cross sectional area and separated by a unit distance

............................ Is defined as the amount of a substance deposited or liberated at the electrode bya charge of 1 Coulomb.

........... is defined as a substance which alters the rate of a chemical reaction without itself undergoing chemical change.

____________ is concentration by froth flotation process in metallurgy of copper

…………….. Is carcinogenic silicates.

……………………….. Is an organic compound needed to maintan the health of nerves, skin and red blod cells.

_____ is an example of O/W type emulsion.

______ is an example of non-protein amino acid.

______ is an example of fibrous protein.

.............. is ammoniacal silver nitrate solution.

........ is amorphous solid.

____ is also know as green oil.

………………… is allotropic form of carbon has aromatic character.

........ is added to soap to develop the antiseptic properties.

Flux added in the extraction of iron is

........... is added to gold sol to protect it.

........... is added as an stabilising agent for making platinum colloid.

.................... is a sodium salt alkyl hydrogen sulphate or alkyl benzene sulphonic acid.

................... Is a process in which electrical energy is used to cause a non-spontaneous chemical reaction.

.................... is a monomer which polymerises to give nylon-6.

.......... is a lyophilic sol.

............ is a mixture of CuSO_4+ Sodium citrate + NaOH.

.......... is a hydrophilic sol.

…………………… is a good reducing agent.

................... Is a device that converts electrical energy into chemical energy.

................Is a device in which a spontaneous chemical reactoin generates an electric current.

………………….. is a component of many lubricants for example cycle chain oil.

……………… is a chemical formula of boron.

.......... is a carbonate ore.

........... involves the formation of activated complex with appreciable activation energy.

........... introduced the term gold number as a measure of protecting power of a colloid.

........... inhibits the action of bacteria and used for curing pneumonia.