94420 + Interview Questions in Chemistry in Class 12

1.	The complex compound that gives a preciptate with BaCl_2 solution is
Answer» `[CO(NH_3)_5SO_4]BR` `[Co(NH_3)_5Br]SO_4` `[Co(NH_3)_5Br](NO_3)_2` `[Co(NH_3)_5SO_4]Cl` Answer :B

Discussion

2.	The complex Ca_(2) [M (CN)]_(6) has spin only magnetic moment 2.83 BM and the complex K_(2) [MCl_(4)] has spin only magnetic moment of 4.9 BM. How many electrons were present in valence shell d-orbital of the neutral gaseous atom on M ?
Answer» ANSWER :5

Discussion

3.	The complex CoCl_3. 4NH_3 ionises to give :
Answer» `1 CL^(-)`ION `2 Cl^(-)` ion `3 Cl^(-)` ion no `Cl^(-)` ion. Answer :A

Discussion

4.	The complex [CoF_6]^(4-) is :
Answer» outer orbital and DIAMAGNETIC inner orbital and PARAMAGNETIC outer orbital and paramagnetic inner orbital and diamagnetic ANSWER :C

Discussion

5.	The completely filled M shell of an atom contains in all
Answer» 2e 18 e 32 e 8 e Answer :B

Discussion

6.	The compiexing ability of Mn ^(+2), Fe ^(+2), Co ^(+2) is
Answer» `Mn^(+2) LT FE ^(+2) lt CO ^(+2)` `Mn ^(+2) lt CO ^(+2) lt Fe ^(+2)` `CO ^(+2) lt Fe ^(+2) lt Mn ^(+2)` NONE of these Answer :A

Discussion

7.	The complete hydrolysis of which of the following compounds of Xe is a redox reaction?
Answer» `XeF_2` `XeF_4` `XeF_6` Both (1) and (2) ANSWER :D

Discussion

8.	Thecomplete processofextactingthe metal fromitsorea iscalled……………… .
Answer» ANSWER :METALLURGY

Discussion

9.	Thecompletecombustionof CH_(4) gives :
Answer» `CO+H_(2)` `CO+N_(2)` `CO+N_(2)O` `CO_(2)+H_(2)O` ANSWER :D

Discussion

10.	The commonly used dehydrating agent in the preparationg of an ester is :
Answer» `P_2O_5` ANHYDRIDE `CaCI_2` Anhydride `AICI_3` CONC.`H_2SO_4` ANSWER :D

Discussion

11.	The common valency shown by the elements of group 15 is/are
Answer» `4` `3,5` `2,6` `1,7` ANSWER :B

Discussion

12.	The commonest gas in the atmosphere is:
Answer» Helium Nitrogen Ammonia Hydrogen Answer :B

Discussion

13.	The common transition metals in brass and bronze is
Answer» Cu Al Sn Cr Answer :A

Discussion

14.	The common source of carbohydrates, fats and proteins is
Answer» rice milk egg ghee Answer :B

Discussion

15.	The common semiconductor is :
Answer» Fe Se Ge C Answer :C

Discussion

16.	The common salt, sodium chloride is an example for crystal system with edge length a = b = c and angles α = β = γ = 90°. Identify the crystal system.
Answer» ANSWER :CUBIC CRYSTAL

Discussion

17.	The common pain killer which causes minute ulcers or bleeding in the stomach, and should not be taken empty stomach is
Answer» aspirin ibuprofen naproxen diclofenac Solution :Aspirin is ABSORBED from GASTRO intestinal TRACT where it is hydrolysed to salicyclic ACID causing ULCERS and bleeding in the stomach.

Discussion

18.	The common oxidation state of transition elements is
Answer» `+II` `+IV` `+VI` `+VII` ANSWER :A

Discussion

19.	The common oxidation states shown by halogens are
Answer» `+1, +3, +5, +7 ` `+1, +2, +4, +6` `+1, +2, +3, +4` `+1, +3, +4, +6` ANSWER :A

Discussion

20.	The common oxidation state of the elements of lanthanide series is:
Answer» `+2` `+3` `+4` `+1` ANSWER :B

Discussion

21.	The commonoxidationstateof lanthanoidsis "______"
Answer» `+3` `-3` `0 ` `+2` ANSWER :A

Discussion

22.	The common oxidation state of actinides is
Answer» `+4` `+5` `+3` `+7` ANSWER :C

Discussion

23.	The common oxidation state exhibited by transition elements is
Answer» `+II` `+IV` `+VI` `+VII` ANSWER :A

Discussion

24.	The common names of the lower fatty acids are obtained from
Answer» their parent hydrocarbon their REDUCTION product the sources from which they are obtained IUPAC system Solution :The COMMON names of lower fatty acids are obtained from the sources from which they are obtained .EG, formic ACID (HCOOH) gets its name from red ant (Latin formica) , from which it is obtained .

Discussion

25.	The common name of vicinal dihalide is ………
Answer» 1, 2-dihaloalkane Alkylene DIHALIDE Alkulidene HALIDE Alkane -1,2- dihalide ANSWER :B

Discussion

26.	The common name of this compound CH_(2)=CH-CH_(2)-OH is
Answer» GLYCEROL VINYL ALCOHOL ALLYL alcohol prop-2-en-1-ol Answer :C

Discussion

27.	The common name of the compound : CH_(3)CH_(2)C(CH_(3))_(3) is :
Answer» Trimethyl PROPANE Neopentane NEOHEXANE 2,2-Dimethyl BUTANE. Answer :C

Discussion

28.	The common name of Prop-2-enal is
Answer» Catechol Acrolein Vanillin Valeraldelyde Answer :B

Discussion

29.	The common name of K [PtCl_(3) (eta^(2)-C_(2)H_(4))] is ….. .
Answer» SOLUTION :Zeise's SALT

Discussion

30.	The common name of 3-phenyl prop - 2 - enal is ______
Answer» CROTONALDEHYDE SALICYLALDEHYDE cinnamaldehyde benzaldehyde Answer :C

Discussion

31.	The common name of 2-methyl-1-propanol
Answer» 2-methyl-2-propanol Secondary BUTYL alcohol Isobutyl alcohol Tertiary butyl alcohol Answer :C

Discussion

32.	The common name for 4-hydroxy toluene is ________.
Answer» p-cresol m-cresol resoricinol catechol Answer :A

Discussion

33.	The common metal present in German Silver, Bell metal and Brass is
Answer» Fe Cu Zn Sn Answer :B

Discussion

34.	The common method of extraction of metals from oxide ores involves :
Answer» REDUCTION with carbon Reduction with aluminium Reduction with hydrogen Electrolytic method Answer :A

Discussion

35.	The common ion effect is shown by which of the following:
Answer» `Bacl_2 + BaNO_3` NACL+ HCL `NH_4OH + NH_4Cl` NONE of these Answer :C

Discussion

36.	The common metal in brass, bronze and German silver is:
Answer» Cu Mg Al Zn Answer :A

Discussion

37.	The common impurity present in bauxite is
Answer» CuO ZnO `Fe_2O_3` `Cr_2O_3` SOLUTION :Aluminium is MAINLY isolated from bauxite ore which is GENERALLY contaminated with FERRIC oxide and SILICA .

Discussion

38.	The common features among the species CN^(-),CO and NO^(+) are
Answer» bond ORDER three and dimagnetic Bond order three and WEAK field ligands Paramagnetic and STRONG field ligands Paramagnetic and `PI`-acceptor ligands Answer :A

Discussion

39.	The common example of buffer having pH of about 7.4 is :
Answer» MILK BLOOD WATER LIME water Answer :B

Discussion

40.	The common depressant used in froth floatation process for separation of ZnS and PbS is :
Answer» EUCALYPTUS OIL SODIUM sulphide Sodium CYANIDE Lime Answer :C

Discussion

41.	The common damage caused by air pollutants to vegetation occurs in the leaf structure.
Answer» ANSWER :A

Discussion

42.	The common basic structural unit is silicates and silica is
Answer» `Si_(2)O_(6)^(4-)` `SiO_(3)^(2-)` `SiO_(4)^(4-)` `Si_(2)O_(7)^(6-)` Solution :Silica `(Sio_(2))` and SILICATES containj a common structureal, unit `(SiO_(4))^(4-)` in which each SI is surrounded tetrahedrally by FOUR oxygen atoms.

Discussion

43.	The common acid used in the manufacture of rayon and plastics is
Answer» Methanoic ACID Ethanoic acid Propanoic acid Butanoic acid Solution :Ethanoic acid is USED in the manufacture of resin and PLASTICS.

Discussion

44.	The common and IUPAC name of HOOC-(CH_(2))_(4)-COOH is ___________.
Answer» GLUTARIC ACID, hexanedioc acid Glutaric acid, pentanedioc acid ADIPIC acid, hexanedioic acid Adipic acid, pentanedioc acid Answer :C

Discussion

45.	The commetical alcohol is made unfit for drinking by mixing in it, copper sulphate and pyridine. This is called ________ of alcohol.
Answer» SOLUTION :DENATURATION

Discussion

46.	The common acid used in the manufacture of rayonand plastic is
Answer» methanoic acid ETHANOIC acid propanic acid BUTANOIC acid SOLUTION :Rayon and plasticpolymers are manufactured with thehelp of ethanoicacid `(CH_(3)COOH)`.

Discussion

47.	The commercial uses of DDt and benzene hexachloride are :
Answer» DDT is a herbicide , benzene hexachloride is a FUNGICIDE Both are insecticides Both are herbicides DDT is a fungicide and benzene hexachloride is a herbicide ANSWER :2

Discussion

48.	The commerical name of polyacrylonitrile is ..............
Answer» DACRON ORLON (acrilan) PVC BAKELITE Answer :B

Discussion

49.	The commercial name of polyacrylonitrite is .............
Answer» DACRON ORLON (acrilaw) PVC Bakelite Answer :B

Discussion

50.	The commercial production of sodium carbonate is done by
Answer» Lead-chamaber process Haber's process Solvay's process Castner's process Answer :C

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The complex compound that gives a preciptate with BaCl_2 solution is

The complex Ca_(2) [M (CN)]_(6) has spin only magnetic moment 2.83 BM and the complex K_(2) [MCl_(4)] has spin only magnetic moment of 4.9 BM. How many electrons were present in valence shell d-orbital of the neutral gaseous atom on M ?

The complex CoCl_3. 4NH_3 ionises to give :

The complex [CoF_6]^(4-) is :

The completely filled M shell of an atom contains in all

The compiexing ability of Mn ^(+2), Fe ^(+2), Co ^(+2) is

The complete hydrolysis of which of the following compounds of Xe is a redox reaction?

Thecomplete processofextactingthe metal fromitsorea iscalled……………… .

Thecompletecombustionof CH_(4) gives :

The commonly used dehydrating agent in the preparationg of an ester is :

The common valency shown by the elements of group 15 is/are

The commonest gas in the atmosphere is:

The common transition metals in brass and bronze is

The common source of carbohydrates, fats and proteins is

The common semiconductor is :

The common salt, sodium chloride is an example for crystal system with edge length a = b = c and angles α = β = γ = 90°. Identify the crystal system.

The common pain killer which causes minute ulcers or bleeding in the stomach, and should not be taken empty stomach is

The common oxidation state of transition elements is

The common oxidation states shown by halogens are

The common oxidation state of the elements of lanthanide series is:

The commonoxidationstateof lanthanoidsis "______"

The common oxidation state of actinides is

The common oxidation state exhibited by transition elements is

The common names of the lower fatty acids are obtained from

The common name of vicinal dihalide is ………

The common name of this compound CH_(2)=CH-CH_(2)-OH is

The common name of the compound : CH_(3)CH_(2)C(CH_(3))_(3) is :

The common name of Prop-2-enal is

The common name of K [PtCl_(3) (eta^(2)-C_(2)H_(4))] is ….. .

The common name of 3-phenyl prop - 2 - enal is ______

The common name of 2-methyl-1-propanol

The common name for 4-hydroxy toluene is ________.

The common metal present in German Silver, Bell metal and Brass is

The common method of extraction of metals from oxide ores involves :

The common ion effect is shown by which of the following:

The common metal in brass, bronze and German silver is:

The common impurity present in bauxite is

The common features among the species CN^(-),CO and NO^(+) are

The common example of buffer having pH of about 7.4 is :

The common depressant used in froth floatation process for separation of ZnS and PbS is :

The common damage caused by air pollutants to vegetation occurs in the leaf structure.

The common basic structural unit is silicates and silica is

The common acid used in the manufacture of rayon and plastics is

The common and IUPAC name of HOOC-(CH_(2))_(4)-COOH is ___________.

The commetical alcohol is made unfit for drinking by mixing in it, copper sulphate and pyridine. This is called ________ of alcohol.

The common acid used in the manufacture of rayonand plastic is

The commercial uses of DDt and benzene hexachloride are :

The commerical name of polyacrylonitrile is ..............

The commercial name of polyacrylonitrite is .............

The commercial production of sodium carbonate is done by