94420 + Interview Questions in Chemistry in Class 12

1.	The metallurgical process in which the metal obtained in fused state is called ..........
Answer» ROASTING Smelting FROTH floatation CALCINATION Answer :B

Discussion

2.	The nature of bonding in diamond is :
Answer» Metallic Coordinate Covalent Ionic ANSWER :C

Discussion

3.	The metallurgical process in which a metal is obtained in a fused state is called :
Answer» SMELTING Roasting Calcination Froth floatation Answer :A

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4.	The metallic sulphide not precipitated if H_2S gas is passed through HCl containing aqueous solution is:
Answer» `COS` `Bi_2S_3` HGS `CUS` ANSWER :D

Discussion

5.	The nature of anode rays depends on
Answer» Nature of RESIDUAL GAS Nature of discharging TUBE Nature of ELECTRODE All of these Answer :A

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6.	The metalloid amongst the following is:
Answer» ARSENIC Sodium Gold Iron Answer :A

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7.	The metallic of lithosphere is called
Answer» Siderophil Lithophil Atmophil None of these ANSWER :A

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8.	The nature of bond of carbon of alkyl group and halogen in alkyl halide is ……….
Answer» COVALENT Co-ordinate covalent METALLIC IONIC ANSWER :A

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9.	The metallic nature of transition elements is _____ than that of alkali metals.
Answer» Less More Same None Answer :A

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10.	The naturally occuringchemicalsubstances inform ofwhich metals occur in the earth along withimpuritiesarecalled ………………. .
Answer» ANSWER :MINERALS

Discussion

11.	The natural petroleum contains
Answer» SATURATED hydrocarbons Cyclic saturated hydrocarbons Compounds of sulphur All of these Answer :D

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12.	Thenaturalrubber isthepolymerof
Answer» 1, 3 -butadiene polyamide ISOPRENE NONE OFTHESE Solution :Natural rubberisapolymer isisoprene ` nCH_2=CH- underset ( CH_3 )underset( \|) C= CH _2overset ( "Polymerisation") to` isoprene `underset ("natural rubber")( [CH _ 2-CH = underset ( CH_3 )underset ( \| ) C - CH _ 2 ]_n) `

Discussion

13.	The metallic lustre exhibited by sodium is explained by :
Answer» DIFFUSION of SODIUM ions oscillation of loose electrons excitation of free electrons existence of BODY CENTRED cubic lattice. Answer :B

Discussion

14.	The natural semipermiable membrane is:
Answer» Gelatinous `Cu_2Fe(CN)_6` Gelatinous `Ca_3(PO_4)_2` CELL wall Phenol layer Answer :C

Discussion

15.	The metallic form of phosphorous is:
Answer» WHITE P Red P `BETA`-BLACK P `ALPHA`-Black P Answer :D

Discussion

16.	The natural polymer among the following is
Answer» PECTIN teflon Polyethylene terylene Answer :A

Discussion

17.	The native silver forms a water soluble compound (B) with dilute aqueous solution of NaCN in the presence of a gas (A). The silver metal is obtained by the addition of a metal (C) to (B) and complex (D) is formed as a byproduct. Write the structures of (C) and (D) and identify (A) and (B) in the following sequence : Ag+NaCN+[A] +H_(2)O [B]+OH^(-) +Na^(+) [C] +[B] [D]+Ag
Answer» ANSWER :`[A]=O_(2)` `[B]=NA[Ag(CN)_(2)]` [C]=Zn `[D]=Na_(2) [Zn(CN)_(4)]`.

Discussion

18.	The metallic fluoride used in a Swartz reaction is ……….
Answer» NaF `CuF_(2)` `Hg_(2)F_(2)` `MgF_(2)` ANSWER :C

Discussion

19.	The name urea was given by :
Answer» Wohler Berzelius Roulle Lemery Answer :C

Discussion

20.	The metal X is prepared by the electrolysis of fused chloride. It reacts with hydrogen to form a colourless solid from which hydrogen is released on treatment with water. The metal is:
Answer» Al Ca Cu Zn Answer :B

Discussion

21.	The name of which drug is given based on Hindustan Antibiotics Ltd. ?
Answer» Streptomycin Hemycin Angolamycin Veramycin SOLUTION :Hemycin

Discussion

22.	The metallic character of the element of IV A group
Answer» Has no significance Increases from TOP to BOTTOM Does not change Decrease from top to bottom Answer :B

Discussion

23.	The metallic character of the elements to group 14:
Answer» DECREASES from TOP to bottom Has no significance Does not change Increases from top to bottom Answer :D

Discussion

24.	The name of the family associated with general formula (RO)_(2)CHR is
Answer» ACID anhydride Ketone ACETALS Hemiacetal. Solution :

Discussion

25.	The metal 'X' on heating with nitrogen gives compound 'Y' which dissolves in water to evolve a colourless gas. The gas on passing through CuSO_4 solution gives a blue colour. The compound 'Y' is
Answer» `MG(NO_3)_2` `Mg_3N_2` `NH_3` MgO Answer :B

Discussion

26.	The name of the organic compounds DDT is :
Answer» DICHLORO DIPHENYL TOLUENE Dichloro diphenyl trichloroethane Diphenyl dichloro trichloroethane Dichloro diphenyl thiosemicarbazide Answer :B

Discussion

27.	The metal X is prepared by the electrolysis of fused chloride. It reacts with hydrogen to form a colourless solid from which hydrogen gas is released on treatment with water. The metal is :
Answer» AL Ca Cu Zn Answer :B

Discussion

28.	The name of the compound having the structure ClCH_(2)CH_(2)COOH is
Answer» 3-chloropropanoic acid 2-chloropropanoic acid 2-chloroethanoic acid Chlorosuccinic acid Solution :`underset("3-chloro PROPANOIC acid")(Cl-underset(3)(C)H_(2)-underset(2)(C)H_(2)-underset(1)(C)OOH)`

Discussion

29.	The nameof the compoundC in thefollowingseriesofreaction of Ethanamine oversert(HNO_(2))(to)Aoverset( PCI_(5))(to)B overset(alc. KCN) (to) C
Answer» methanenitrile ethanentrile propanentrile BUTANENITRILE ANSWER :C

Discussion

30.	The name of the complex ion, [Fe(CN)_(6)]^(3-) is :
Answer» tricyanoferrate (III) ION hexacyanidoferrate (III) ion hexacyano iron (III) ion hexacyanitroferrate (III) ion SOLUTION :`[Fe(CN)_(6)]^(3-)` ion is hexacyanidoferrate (III) ion.

Discussion

31.	The metal with minimum enthalpy of atomisation is:Hg,Mn,Fe,Cu.
Answer» Hg Mn Fe Cu Answer :A

Discussion

32.	The name of is …………………. .
Answer» PYROGALLOL HYDROXY CRESOL Orcinol Phloroglucinol Solution :Orcinol

Discussion

33.	The metal which reacts with water at room temperature is
Answer» Copper Iron Magnesium SODIUM Solution :`2Na+2H_(2)O to 2NAOH +H_(2)`

Discussion

34.	The name of equation showing relation between electrode potential (E) standard electrode potential (E^(@)) and concentration of ions in solution is
Answer» KOHLRAUSCH's EQUATION NERNST's equation Ohm's equation Faraday's equation Solution :nernst's equation shows relation between E and `E^(o)`.

Discussion

35.	The metal which cannot liberate H_2 from hydrochloric acid is :
Answer» Zn Cu Mg AI Answer :B

Discussion

36.	The name of is ……………… .
Answer» PHLOROGLUCINOL PYROGALLOL QUINOL RESORCINOL SOLUTION :Phloroglucinol

Discussion

37.	The name of the complex ion, [Fe(CN)_6]^(3-) is ___________.
Answer» tricyanoferrate (III) ion hexacyanoferrate (III) ion hexacyanoiron (III) ion hexacyanitoferrate (III) ion Answer :B

Discussion

38.	The metal which is the best conductor of electricity is
Answer» Iron Copper Silver Aluminium Answer :C

Discussion

39.	The name of drug which is used in mental depression?
Answer» EQUANIL Tetracycline Bithional Erythromycin Answer :A

Discussion

40.	The name of [CoCl_(2)(NO_(2))_(2)(NH_(3))_(2)]OH is
Answer» Diamminechloronitritocobalt (III) hydroxide Amminechloronitro cobalt(III) hydroxide Diamminedichloridodinitrito-Ncobalt(III) hydroxide Cobalt(III) dichlorodiamminedinitro hydroxide Answer :A::B::C::D

Discussion

41.	The metal which liberates hydrogen from hot NaOH solution is :
Answer» Zn Cu Ag Fe Answer :A

Discussion

42.	The name of DDT is
Answer» <P>p,p - dichloro DIPHENYL TRICHLORO ethane p,p - dichloro diphenyl trichloro ethene p,p - dichloro diphenyl trichloro benzene p,p - TETRA chloro ethane ANSWER :A

Discussion

43.	The metal which forms amide on passing NH_3 on it at 300^@ C is:
Answer» Magnesium Lead Aluminium Sodium Answer :D

Discussion

44.	The name of complex ion [Fe(CN)_6]^(3-) is
Answer» Tricyanoferrate (III) ion Hexacyanidoferrate (III) ion Hexacyanoiron (III) ion Hexacyanitoferate (III) ion Answer :B

Discussion

45.	The metal which does not from a polynuclear carbonyl is:
Answer» Chromium Manganese Iron Cobalt Answer :A

Discussion

46.	The name of CH_3-CH_2 - undersetoverset(\|\|)(O)(C ) - CH_2 - CHO is .........
Answer» SOLUTION :3-Oxo pentanal

Discussion

47.	The metal which does not form colour compound is:Chromium,Iron,Zinc,Manganese.
Answer» Chromium Iron Zine Manganese Answer :C

Discussion

48.	The name of :
Answer» Maleic ACID Fumaric acid Malonic acid Succinic acid ANSWER :A

Discussion

49.	The name glacial acetic acid is given to pure acetic acid ; because
Answer» Below `16.6^@`C it is WHITE liquid it FORMS ICE like solid below `16.6^@`C It is mixedwith methanol pure ACETIC acid above `16.6^@`C is solid Answer :B

Discussion

50.	Thenamefire-damp is givento :
Answer» METHANE ethane propane butane Answer :a

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The metallurgical process in which the metal obtained in fused state is called ..........

The nature of bonding in diamond is :

The metallurgical process in which a metal is obtained in a fused state is called :

The metallic sulphide not precipitated if H_2S gas is passed through HCl containing aqueous solution is:

The nature of anode rays depends on

The metalloid amongst the following is:

The metallic of lithosphere is called

The nature of bond of carbon of alkyl group and halogen in alkyl halide is ……….

The metallic nature of transition elements is _____ than that of alkali metals.

The naturally occuringchemicalsubstances inform ofwhich metals occur in the earth along withimpuritiesarecalled ………………. .

The natural petroleum contains

Thenaturalrubber isthepolymerof

The metallic lustre exhibited by sodium is explained by :

The natural semipermiable membrane is:

The metallic form of phosphorous is:

The natural polymer among the following is

The metallic fluoride used in a Swartz reaction is ……….

The name urea was given by :

The metal X is prepared by the electrolysis of fused chloride. It reacts with hydrogen to form a colourless solid from which hydrogen is released on treatment with water. The metal is:

The name of which drug is given based on Hindustan Antibiotics Ltd. ?

The metallic character of the element of IV A group

The metallic character of the elements to group 14:

The name of the family associated with general formula (RO)_(2)CHR is

The metal 'X' on heating with nitrogen gives compound 'Y' which dissolves in water to evolve a colourless gas. The gas on passing through CuSO_4 solution gives a blue colour. The compound 'Y' is

The name of the organic compounds DDT is :

The metal X is prepared by the electrolysis of fused chloride. It reacts with hydrogen to form a colourless solid from which hydrogen gas is released on treatment with water. The metal is :

The name of the compound having the structure ClCH_(2)CH_(2)COOH is

The nameof the compoundC in thefollowingseriesofreaction of Ethanamine oversert(HNO_(2))(to)Aoverset( PCI_(5))(to)B overset(alc. KCN) (to) C

The name of the complex ion, [Fe(CN)_(6)]^(3-) is :

The metal with minimum enthalpy of atomisation is:Hg,Mn,Fe,Cu.

The name of is …………………. .

The metal which reacts with water at room temperature is

The name of equation showing relation between electrode potential (E) standard electrode potential (E^(@)) and concentration of ions in solution is

The metal which cannot liberate H_2 from hydrochloric acid is :

The name of is ……………… .

The name of the complex ion, [Fe(CN)_6]^(3-) is ___________.

The metal which is the best conductor of electricity is

The name of drug which is used in mental depression?

The name of [CoCl_(2)(NO_(2))_(2)(NH_(3))_(2)]OH is

The metal which liberates hydrogen from hot NaOH solution is :

The name of DDT is

The metal which forms amide on passing NH_3 on it at 300^@ C is:

The name of complex ion [Fe(CN)_6]^(3-) is

The metal which does not from a polynuclear carbonyl is:

The name of CH_3-CH_2 - undersetoverset(||)(O)(C ) - CH_2 - CHO is .........

The metal which does not form colour compound is:Chromium,Iron,Zinc,Manganese.

The name of :

The name glacial acetic acid is given to pure acetic acid ; because

Thenamefire-damp is givento :