94420 + Interview Questions in Chemistry in Class 12

1.	Name the deficiency disease resulting from lack of Vitamin 'A' in the diet.
Answer» ANSWER :A::B::D

Discussion

2.	Name the crystal structure of copper metal.
Answer» SOLUTION :Face-centred CUBIC LATTICE.

Discussion

3.	Describe briefly the structure of copper metal.
Answer» SOLUTION :Face-centred CUBIC LATTICE.

Discussion

4.	Name the crystal defect which lowers the density in an ionic crystal
Answer» ANSWER :Schotky DEFECT

Discussion

5.	Name the crystal defect that reduces the density of an ionic solid. What type of ionic substances, show this defect ?
Answer» Solution :Schottky defect REDUCES the density of an IONIC SOLID. It is shown by those ionic SOLIDS in which the CATION and anion are of equal size.

Discussion

6.	Name the crystal defect produced when sodium crystal is doped with MgCl_(2) ?
Answer» SOLUTION :IMPURITY DEFECT

Discussion

7.	Name the constituents of starch and what is the difference between them ?
Answer» Solution :Amylose : A LINEAR polymer of `alpha`- GLUCOSE , WATER soluble. Amylopectin : Branched polymer of `alpha`-glucose , water INSOLUBLE.

Discussion

8.	Name the conditions for obtaining better yield of O_3 from O_2.
Answer» Solution :(i) FAIRLY low temperature (approx 273 K). (II) Pure and dry oxygen. (iii) Dry OZONISER (iv) Sparkless electric discharge.

Discussion

9.	Namethe compounds that arerequiredin small amounts in ourdietand their deficiencycause specific disease.
Answer» SOLUTION :VITAMINS

Discussion

10.	Name the compound which reacts with formaldehyde to produce ethyl alcohol.
Answer» SOLUTION :The compound which REACTS with formaldehyde to produce ETHYL alcohol is METHYL magnesium iodide.

Discussion

11.	Name the compound, that is no isomer with diethyl ether
Answer» n-propylmethyl ether Butane-1-ol 2-methylpropane-2-ol Butanone SOLUTION :Butanone `CH_(3)-underset(O)underset(\|\|)(C)-CH_(2)-CH_(3)(C_(4)H_(8)O)` is not an ISOMER of `C_(2)H_(5)-O-C_(2)H_(5)C_(4)H_(5)(C_(4)H_(10)O)`

Discussion

12.	Name the compound that does not fit into the formula C_(x)(H_(2)O)_(y), but is a carbohydrate.
Answer» Solution :RHAMNOSE `(C_(6)H_(12)O_(5))` does not fit into this formula, but is a CARBOHYDRATE.

Discussion

13.	Name the compound (IUPAC) having the following structure : CH_(3) - overset(CH_(3))overset(\|)CH - CH_(2)Cl
Answer» SOLUTION :1-chloro -2- METHYLPROPANE

Discussion

14.	Name the compound formed by coupling reaction of 4-aminobenzenesulfonic acid and N, N-dimethylbenzenamine and give its one use.
Answer» Solution : It is used as indicator in the TITRATION of strong acid with WEAK base.

Discussion

15.	Name the compound according to IUPAC system . (i) CH_3-CH_3-underset(CH_2Cl)underset(\|)(CH)-overset(CH_2OH)overset(\|)CH-underset(CH_3)underset(\|)CH-CH_3
Answer» SOLUTION :3-Chloromethyl-2-(1-methylethyl)pentan-1-ol

Discussion

16.	Name thecompound according to IUPAC system . H_3 C - underset(CH_3)underset(CH)-CH_2- underset(OH)underset(\|)OH-overset(CH_2 OH)overset(\|)CH-CH_3
Answer» SOLUTION :2,5-Dimethylhexan-1,3-diol

Discussion

17.	Name thecompound according to IUPAC system . H_2 C = CH - underset(OH)underset(\|)CH-CH_2 -CH_2-CH_3
Answer» SOLUTION :Hex-1-en-3-ol

Discussion

18.	Name thecompound according to IUPAC system . CH_3-underset(CH_3)underset(\|)C=underset(Br)underset(\|)C-CH_2OH
Answer» SOLUTION :2-Bromo-3-methylbut-2-en-1-ol

Discussion

19.	Namethe components of strach.
Answer» SOLUTION :There are TWO COMPONENTS of STRACH , i.e., amyloseand AMYLOPECTIN.

Discussion

20.	Name the complexes (i) K_(4)[Fe(CN)_(6)] (ii) [Pt(NH_(3))_(3)(NO)Cl_(2)]Br
Answer» SOLUTION :(i) POTASSIUM HEXACYANOFERRATE (II)(ii) triamminedichloridonitrosoniumplatinium (II) BROMIDE.

Discussion

21.	Name the complex K_(3)[Fe(C_(2)O_(4))_(3)].
Answer» SOLUTION :POTASSIUM trioxalatoferrate (III).

Discussion

22.	Name the complexes : (i) K_(3)[Al(C_(2)O_(4))_(3)](ii) [Co(NH_(3))_(5)CO_(3)]Cl.
Answer» SOLUTION :(i) POTASSIUM trioxalatoaluminate (III) (II) pentaamminecarbonatocobalt (III) CHLORIDE.

Discussion

23.	Name the common elements present in the anode mud in eletrolytic refining of copper. Why are they so present?
Answer» Solution :The common elements present in the anode MUD are antimony, selenium, tellurium, SILVER, GOLD and platinum. These elements, being less reactive, are not affected by `CuSO_(4)-H_(2)SO_(4)` solution and hence settle down under anode as anode mud.

Discussion

24.	Name the complex K_(2)[Cu(CN)_(4)].
Answer» SOLUTION :POTASSIUM tetracyanocuprate (II).

Discussion

25.	Namethecommonelements presentin theanodemudinelectrolytic refiningofcopper. Whyaretheyso present ?
Answer» Solution :Thecommonelementspresentintheanodemudareantimony,selenium,TELLURIUM, SILVER , goldandplatinium.Theseelements, beingless reactive,are not affectedby` CU SO _ 4-H _ 2 SO _ 4` solutionandhencesettledownunder anodeas ANODEMUD.

Discussion

26.	Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present ?
Answer» SOLUTION :Antimony, GOLD, platinum, selenium, tellurium and silver are most common elements present in anode mud in electrolytic refining of COPPER. These elements being less reactive do not participates in electrolytic REACTIONS. Hence, they settle down under anode as anode mud.

Discussion

27.	Name the colloid in which the dispersed phase is solid and dispersion medium is liquid
Answer» gel aerosol SOL SOLID sol Answer :C

Discussion

28.	Name the class of the synthetic detergent which is used in toothpaste.
Answer» SOLUTION :ANIONIC DETERGENTS are USED in TOOTHPASTES.

Discussion

29.	Name the chemicals that pose a threat to ozone layer.
Answer» SOLUTION : FREONS

Discussion

30.	Name the chemical responsible for the antiseptic properties of dettol.
Answer» SOLUTION :A mixture of chloroxylenol and `ALPHA`terpineol in a SUITABLE solvent

Discussion

31.	Namethe chemical componentswhichconstitute nucleotides . Write any two functions of nucleotides in a cell.
Answer» Solution :Nucleotides are madeup of a heterocyclic base containingnitrogen , a five- carbon sugarand a phosphate group. Forexample , AMP (adenosimemonophosphate ) , ADP (adenosine diphosephate ) and ATP (adenosien TRIPHOSPHATE). FUNCTIONS : (i) They are monomers of NUCLEICACID ,i.e., DNA and RNA . (ii) They storeand PASS on hereditycharacteristics . (iii) They synthesis proteins. (iv)They act as energy carriers.

Discussion

32.	Namethe chemical componentswhich constitutenucleotides . Writeany two functions ofnucleotides in a cell.
Answer» SOLUTION :Nucleotides are made up ofa heterocylicbase containingnitrogen a FIVE CARBON atom moeity and a phosphategroup. Example: AMP ( ADENOSINE monophosphate ) . ADP ( adenosimediphosphate) and ATP (adenosinetriphospate ) . Functions : (i) Act as energycarriers . (ii)They synthesise proteins.

Discussion

33.	Name the chemical compoenents which constitude nucleotides.
Answer» Solution :Nucleotides are made up of THREE components, a nitrogenous base, a PENTOSE sugar and phosphoric acid group. The nitrogenous BASES found in nucelotides are (i) purines and(ii) pyrimidines. For example, AMP (ADENOSINE monophosphate).

Discussion

34.	Name the chemical reagent used to remove colloidal impurities from oil.
Answer» SOLUTION :SODIUM Stereate.

Discussion

35.	Name the central metal atom present in haemoglobin and chlorophyll.
Answer» SOLUTION :HAEMOGLOBIN (FE) and CHLOROPHYLL(MG).

Discussion

36.	Name the central metal ion present in haemoglobin and vitaminB_12?.
Answer» Solution :Haemoglobin - IRON (FE) and vitamin -`B_(12)` -COBALT (Co).

Discussion

37.	Name the central atom present in haemoglobin, chlorophyll and vitamin-B_(12).
Answer» SOLUTION :FE, MG and CO RESPECTIVELY.

Discussion

38.	Name the cells that convert the energy of combustion of fuels into electrical energy.
Answer» SOLUTION :FUEL CELLS

Discussion

39.	Name the central atom present in haemoglobin and chlorophyll.
Answer» SOLUTION :FE and MG RESPECTIVELY.

Discussion

40.	Name the cell which was used in the Apollo Space Programme.
Answer» SOLUTION :HYDROGEN FUEL CELL.

Discussion

41.	Name the cell used in hearing aids and watches.
Answer» SOLUTION :MERCURY CELL

Discussion

42.	Name the cations which can be identified by flame test.
Answer» Solution :`CU^(2+)-` bright green , `Ba^(2+)-` APPLE green `Ca^(2+)-` BRICK red,`Sr^(2+)-` crimson `K^(o+)`

Discussion

43.	Name the catalyst [X] for the reaction, CO_((g))+H_(2(g))overset([X])rarr HCHO_((g))
Answer» `NI` `CU` `Cu/ZnO` `Cu//Cr_(2)O_(3)` Answer :B

Discussion

44.	Name the catalyst, which is a coordination compound that is used for hydrogenation of alkenes.
Answer» SOLUTION :Wilkinston CATALYST

Discussion

45.	Name the catalyst used to evolve oxygen by heating potassium chlorate.
Answer» SOLUTION :MANGANESE DIOXIDE

Discussion

46.	Name the catalyst used in the preparation of terylene?
Answer» zeiglar NATTA CATALYST zincacetate + ANTIMONY OXIDE benzoyl peroxide ammonium persulphate Solution : zincacetate + antimony oxide

Discussion

47.	Name the catalyst used in the preparation of alkyl halide from primary and secondary alcohol and HCI.
Answer» SOLUTION :ZINC CHLORIDE

Discussion

48.	Name the catalyst used in the manufacture of high density polythene.
Answer» SOLUTION :Zeigler-Natta

Discussion

49.	Name the catalyst used in the preparation of oxygen from KClO_(3) or decomposition of potassium chlorate.
Answer» SOLUTION :MANGANESE DIOXIDE `(MnO_(2))`.

Discussion

50.	Name the catalyst used in the following process : (a) Haber's process for the manufacture of NH_(3) gae. (b) Ostwald process for the manufacture of nitric acid .
Answer» SOLUTION :(a) Finely divided Fe/FeO, MO as promoter. (B) PT (platinised asbestos)

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Name the deficiency disease resulting from lack of Vitamin 'A' in the diet.

Name the crystal structure of copper metal.

Describe briefly the structure of copper metal.

Name the crystal defect which lowers the density in an ionic crystal

Name the crystal defect that reduces the density of an ionic solid. What type of ionic substances, show this defect ?

Name the crystal defect produced when sodium crystal is doped with MgCl_(2) ?

Name the constituents of starch and what is the difference between them ?

Name the conditions for obtaining better yield of O_3 from O_2.

Namethe compounds that arerequiredin small amounts in ourdietand their deficiencycause specific disease.

Name the compound which reacts with formaldehyde to produce ethyl alcohol.

Name the compound, that is no isomer with diethyl ether

Name the compound that does not fit into the formula C_(x)(H_(2)O)_(y), but is a carbohydrate.

Name the compound (IUPAC) having the following structure : CH_(3) - overset(CH_(3))overset(|)CH - CH_(2)Cl

Name the compound formed by coupling reaction of 4-aminobenzenesulfonic acid and N, N-dimethylbenzenamine and give its one use.

Name the compound according to IUPAC system . (i) CH_3-CH_3-underset(CH_2Cl)underset(|)(CH)-overset(CH_2OH)overset(|)CH-underset(CH_3)underset(|)CH-CH_3

Name thecompound according to IUPAC system . H_3 C - underset(CH_3)underset(CH)-CH_2- underset(OH)underset(|)OH-overset(CH_2 OH)overset(|)CH-CH_3

Name thecompound according to IUPAC system . H_2 C = CH - underset(OH)underset(|)CH-CH_2 -CH_2-CH_3

Name thecompound according to IUPAC system . CH_3-underset(CH_3)underset(|)C=underset(Br)underset(|)C-CH_2OH

Namethe components of strach.

Name the complexes (i) K_(4)[Fe(CN)_(6)] (ii) [Pt(NH_(3))_(3)(NO)Cl_(2)]Br

Name the complex K_(3)[Fe(C_(2)O_(4))_(3)].

Name the complexes : (i) K_(3)[Al(C_(2)O_(4))_(3)](ii) [Co(NH_(3))_(5)CO_(3)]Cl.

Name the common elements present in the anode mud in eletrolytic refining of copper. Why are they so present?

Name the complex K_(2)[Cu(CN)_(4)].

Namethecommonelements presentin theanodemudinelectrolytic refiningofcopper. Whyaretheyso present ?

Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present ?

Name the colloid in which the dispersed phase is solid and dispersion medium is liquid

Name the class of the synthetic detergent which is used in toothpaste.

Name the chemicals that pose a threat to ozone layer.

Name the chemical responsible for the antiseptic properties of dettol.

Namethe chemical componentswhichconstitute nucleotides . Write any two functions of nucleotides in a cell.

Namethe chemical componentswhich constitutenucleotides . Writeany two functions ofnucleotides in a cell.

Name the chemical compoenents which constitude nucleotides.

Name the chemical reagent used to remove colloidal impurities from oil.

Name the central metal atom present in haemoglobin and chlorophyll.

Name the central metal ion present in haemoglobin and vitaminB_12?.

Name the central atom present in haemoglobin, chlorophyll and vitamin-B_(12).

Name the cells that convert the energy of combustion of fuels into electrical energy.

Name the central atom present in haemoglobin and chlorophyll.

Name the cell which was used in the Apollo Space Programme.

Name the cell used in hearing aids and watches.

Name the cations which can be identified by flame test.

Name the catalyst [X] for the reaction, CO_((g))+H_(2(g))overset([X])rarr HCHO_((g))

Name the catalyst, which is a coordination compound that is used for hydrogenation of alkenes.

Name the catalyst used to evolve oxygen by heating potassium chlorate.

Name the catalyst used in the preparation of terylene?

Name the catalyst used in the preparation of alkyl halide from primary and secondary alcohol and HCI.

Name the catalyst used in the manufacture of high density polythene.

Name the catalyst used in the preparation of oxygen from KClO_(3) or decomposition of potassium chlorate.

Name the catalyst used in the following process : (a) Haber's process for the manufacture of NH_(3) gae. (b) Ostwald process for the manufacture of nitric acid .