94420 + Interview Questions in Chemistry in Class 12 Page 1876 InterviewSolution

93751.	……………………..is the appearance of an electrical potential across the sides of the crystal, when it is subjected to mechanical stress.
Answer» SOLUTION :PIEZOELECTRICITY

Discussion

93752.	……………………. Is suspected to cause genetic damage and be harmful to the nervous system.
Answer» ANSWER :NITRO ETHANE

Discussion

93753.	………… is purified by zone refining
Answer» Ge Cu Fe Zn Solution :semi-conductior

Discussion

93754.	………. Is produced when a positron and an electron collide.
Answer» X-ray Neutron `GAMMA`-radiation Neutrino Answer :C

Discussion

93755.	…….. is obtained when 1- chloro butane reacts with alcoholic potash ?
Answer» 1-butanol 2-butene 1-butene 2-butanol SOLUTION :

Discussion

93756.	…………………… is present abundantly in fruits and hence it is also called fruit sugar.
Answer» SOLUTION :FRUCTOSE

Discussion

93757.	_____ is natural elastomer.
Answer» Polyisoprene Polyster Chloroprene None Solution :NATURAL RUBBER

Discussion

93758.	. . . . . . . Is measured by Wheatstone bridge.
Answer» Conductivity RESISTANCE Quantity of electricity emf Solution :Resistance.

Discussion

93759.	……………………….. Is most reactive element among the halogens.
Answer» ANSWER :FLUORINE

Discussion

93760.	________ is isolated from defensivesecretion of a species of grasshopper.
Answer» GLYCEROL Thymol Bombykol SORBITOL. ANSWER :B

Discussion

93761.	"_______" is known asBayer'sreagent
Answer» Hotdilutealkaline`KMnO_(4)` Colddilutealkaline `KMnO_(4)` Hotconc.Acidic`KMnO_(4)` Coldconc.Acidic`KMnO_(4)` ANSWER :B

Discussion

93762.	.......... is irreversible adsorption.
Answer» PHYSICAL adsorption Chemical adsorption Chemisorption (B) and (C) both SOLUTION :(D) (B) and (C) both

Discussion

93763.	…………………. Is inorganic benzene.
Answer» ANSWER :Boranzine

Discussion

93764.	.......... is example of solid sol.
Answer» COLOUR particles GEM STONE Smoke Jellies SOLUTION :Gem stone

Discussion

93765.	.......... is example of Gel.
Answer» Fog Hair cream CHEESE Foam RUBBER SOLUTION :Cheese

Discussion

93766.	.......... is example of sol.
Answer» COLOURED glass PAINTS and CELL FLUIDS Smoke Jellies Solution :Paints and cell fluids

Discussion

93767.	…………………………. Is essential for the cell walls of plants.
Answer» ANSWER :BORON

Discussion

93768.	........... is employed in the softening of hard water to adsorb Ca^(2+) and Mg^(2+)ions
Answer» SOLUTION :PERMUTIT

Discussion

93769.	.................. 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

93770.	............................ 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

93771.	........... is defined as a substance which alters the rate of a chemical reaction without itself undergoing chemical change.
Answer» SOLUTION :CATALYST

Discussion

93772.	____________ is concentration by froth flotation process in metallurgy of copper
Answer» Cuprite CHALCOCITE MALACHITE Haematite ANSWER :B

Discussion

93773.	…………….. Is carcinogenic silicates.
Answer» ANSWER :ASBESTOS

Discussion

93774.	……………………….. Is an organic compound needed to maintan the health of nerves, skin and red blod cells.
Answer» ANSWER :PYRIDOXINE, VITAMIN `B_(6)`

Discussion

93775.	_____ is an example of O/W type emulsion.
Answer» butter cream milk curd Answer :D

Discussion

93776.	______ is an example of non-protein amino acid.
Answer» ORINITHINE GLYCINE ALANINE LYSINE SOLUTION :Orinithine

Discussion

93777.	______ is an example of fibrous protein.
Answer» KERATIN COLLAGEN myoglobin both (a) and (B) SOLUTION :both (a) and (b)

Discussion

93778.	.............. is ammoniacal silver nitrate solution.
Answer» SOLUTION : Tollen.s REAGENT

Discussion

93779.	........ is amorphous solid.
Answer» Liquids in true MEANS Chilled liquids SOLIDS in true means SUBSTANCE with definite melting points Answer :B

Discussion

93780.	____ is also know as green oil.
Answer» ANSWER :ANTHRACENE.

Discussion

93781.	………………… is allotropic form of carbon has aromatic character.
Answer» ANSWER : FULLERENE

Discussion

93782.	........ is added to soap to develop the antiseptic properties.
Answer» Terpineol BITHIONOL Iodine All of these SOLUTION :Bithionol

Discussion

93783.	Flux added in the extraction of iron is
Answer» SILICA Feldspar limestone Alumina Answer :C

Discussion

93784.	........... is added to gold sol to protect it.
Answer» SOLUTION :GELATINE SOL

Discussion

93785.	........... is added as an stabilising agent for making platinum colloid.
Answer» SOLUTION :ALKALI HYDROXIDE

Discussion

93786.	.................... is a sodium salt alkyl hydrogen sulphate or alkyl benzene sulphonic acid.
Answer» SOLUTION :DETERGENT

Discussion

93787.	................... Is a process in which electrical energy is used to cause a non-spontaneous chemical reaction.
Answer» SOLUTION :ELECTROLYSIS

Discussion

93788.	.................... is a monomer which polymerises to give nylon-6.
Answer» SOLUTION :CAPROLACTAM

Discussion

93789.	.......... is a lyophilic sol.
Answer» gum sulphul sol milk Blood Answer :A

Discussion

93790.	............ is a mixture of CuSO_4+ Sodium citrate + NaOH.
Answer» SOLUTION :Benedict.s solution

Discussion

93791.	.......... is a hydrophilic sol.
Answer» STARCH SOLUTION SILVER iodide Magnesium sulphate Arsenic SULFIDE ANSWER :A

Discussion

93792.	…………………… is a good reducing agent.
Answer» contains replaceable `H^(+)` ion `CO_(2)` `[Cr(CO)_(6)]` `[Ni(CO)_(4)]` Answer :A

Discussion

93793.	................... Is a device that converts electrical energy into chemical energy.
Answer» SOLUTION :ELECTROLYTIC CELL

Discussion

93794.	................Is a device in which a spontaneous chemical reactoin generates an electric current.
Answer» SOLUTION :GALVANIC (or) VOLTAIC CELL

Discussion

93795.	………………….. is a component of many lubricants for example cycle chain oil.
Answer» SOLUTION :GRAPHITE

Discussion

93796.	……………… is a chemical formula of boron.
Answer» Answer :`Na_(2)B_(4)O_(7).10H_(2)O`

Discussion

93797.	.......... is a carbonate ore.
Answer» PYROLUSITE MALACHITE Casiterites DIASPORES ANSWER :B

Discussion

93798.	........... involves the formation of activated complex with appreciable activation energy.
Answer» SOLUTION :CHEMISORPTION

Discussion

93799.	........... introduced the term gold number as a measure of protecting power of a colloid.
Answer» SOLUTION :ZSIGMONDY

Discussion

93800.	........... inhibits the action of bacteria and used for curing pneumonia.
Answer» SOLUTION : PENICILLIN

Discussion

Explore topic-wise InterviewSolutions in .

……………………..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.