52671 + Interview Questions in Chemistry in Class 11

1.	Name two intermolecular forces that exist between HF molecules in liquid state.
Answer» Solution :In HF molecules in the liquid STATE, there are dipole-dipole interactions and HYDROGEN BONDING.

Discussion

2.	Name two experiments which show the dual nature of electrons.
Answer» Solution :WAVE nature by Davisson and GERMER experiment (DIFFRACTION experiment), Particle nature by SCINTILLATION experiment.

Discussion

3.	Name two electron rich hydrides.
Answer» ANSWER :`NH_(3),H_(2)O`

Discussion

4.	Name two compounds which retard the decompositiion of H_(2)O_(2) solution.
Answer» SOLUTION :Acetanlide, UREA.

Discussion

5.	Name two compounds which retard decompostion of hydrogen peroxide
Answer» SOLUTION :The TWO COMPOUNDS are:GLYCEROL and ACETANILIDE

Discussion

6.	Name two compounds which do not contain halogens but give positive Beilstein test.
Answer» SOLUTION :Urea and thiourea give POSITIVE Beilstein TEST due to the FORMATION of VOLATILE cuprous cyanide.

Discussion

7.	Name three oxoacids of nitrogen. Write the disproportionation reaction of that oxoacid of nitrogen in which nitrogen is in +3 oxidation state.
Answer» Solution :O.S. of N in `HNO_(2)=(+1)+x+2(-2)=0orx=+3` `3Hoverset(+3)NO_(2)OVERSET("Disproportionation")toHoverset(+5)NO_(3)+2Noverset(+2)O+H_(2)O`

Discussion

8.	Name three natural sources of air pollution.
Answer» Solution :Volcanic ERUPTIONS, FOREST fires and pollen GRAINS of FLOWERS

Discussion

9.	Name three ions which are isoelectronic with F^(-) ion
Answer» Solution :Electrons in `F^(-)` ion `= 9 + 1 = 10`. Isoelectronic ions will be `NA^(+), Al^(3+) and O^(2-)`

Discussion

10.	Name three methods generally used in green chemistry.
Answer» SOLUTION :Use of SUNLIGHT and microwaves, use of sound waves and use of ENZYMES

Discussion

11.	Name three common forms of CaCO_3.
Answer» SOLUTION :Limestone, MARBLE, SHELLS of SEA animals

Discussion

12.	Name the types of chemical bonds.
Answer» Solution :(i) IONIC bond. (ii) COVALENT bond, (III) Co-ordinate bond, (IV) Hydrogen bond, (v) Metallic bond.

Discussion

13.	Name the types of bonds present in ice?
Answer» SOLUTION :COVALENT BONDS and INTERMOLECULAR HYDROGEN bonds.

Discussion

14.	Name the type of structure of silicated in which one oxygen atom of [SiO_(4)]^(4-) is shared ?
Answer» Linear chain silicate Sheet silicate Pyrosilicate Three dimensional SOLUTION :Pyrosilicate containsone OXYGENATOM GIVING `(Si_(2)O_(7))^(6-)` anion.

Discussion

15.	Name the type of reaction that occurs at anode in an electrochemical cell. Give an example.
Answer» Solution :ANODE, `ZntoZn^(2+)+2e^(-)` in DANIELL CELL

Discussion

16.	Name the type of point defect that occurs in a crystal of zinc sulphide.
Answer» SOLUTION :FRENKEL DEFECT

Discussion

17.	Name the type of point defect that occurs in a crystal of zinc sulphide .
Answer» SOLUTION :FRENKEL DEFECT

Discussion

18.	Name the type of Hydrogen bonding in ortho-nitrophenol.
Answer» ANSWER :Intremolecular HYDROGEN BONDING.

Discussion

19.	Name the type of hybridisation of each C-atom in a molecule of (i) propylene (propene) (ii) propyne. How manysigmaand pi-bonds are present in each case ?
Answer» Solution :`OVERSET(1)(C)H_(3) - overset(2)(C)H= overset(3)(C)H_(2)` (C - 1 is `sp^(3) ) , ` C - 2and C - 3 are ` sp^(2)) , sigma `- bonds = ` 8 pi `- bonds = 1 . (II) `overset(1)(C)H_(3) - overset(2)(C)H= overset(3)(C)H_(2)` (C - 1 is `sp^(2), C - 2 and C - 2are sp ), ` sigma `- bonds = 6 . ` pi` - bonds = 2 .

Discussion

20.	Name the two type of the structure of silicate in which one oxygen arom of [SiO_(4)]^(4) is shared?
Answer» Linear CHAIN silicate Sheet silicate PYROSILICATE THREE dimensional Answer :C

Discussion

21.	Name the two conditions which mout be satisfied for hydrogen bonding to take place in a molecule.
Answer» Solution :(i) The MOLECULE should contain contain a highly electronegativeatom LINKED to H-atom . (II) The size of the ELECTRONEGATIVE atom should be small .

Discussion

22.	Name the two allotropic forms of hydrogen. Which is more abundant?
Answer» SOLUTION :The two allotropic FORMS of hydrogen are ortho hydrogen and PARA hydrogen. Ordinary hydrogen contains 75% of ortho hydrogen and 25% of para hydrogen by volume.

Discussion

23.	Name the three physical states of matter.
Answer» SOLUTION :SOLID, LIQUID and GAS

Discussion

24.	Name the source of sodium chloride.
Answer» SOLUTION :SEA WATER is the SOURCE of CHLORIDE.

Discussion

25.	Name the shapes of the following molecules: CH_(4) , C_(2)H_(2)m CO_(2)
Answer» SOLUTION :`CH_(4) ` = TETRAHEDRAL, ` C_(2) H_(2)` = CYLINDRICAL, `CO_(2) = linear .

Discussion

26.	Name the scientist who introduced absolute scale of temperature.
Answer» SOLUTION :LORD KELVIN

Discussion

27.	Name the regions of atmosphere were, the temperature increases and decreases with altitude.
Answer» Solution :In STRATOSPHERE and thermosphere-TEMPERATURE INCREASES with attitude. In troposphere and mesosphere - temperature DECREASES with attitude.

Discussion

28.	Name the rule that is observed during the addition of an unsymmetrical molecule to an unsymmetrical alkene.
Answer» SOLUTION :Markownikoff.s RULE

Discussion

29.	Name the reaction Me^(-) -= -overset(O)overset(\|\|)(C)-Me underset(CH_(3)-underset(OH)underset(\|" ")(CH)-CH_(3))overset(Al(OCHMe_(2))_(3))rarr Me - -= - overset(OH)overset(\|)(CH)-Me
Answer» meervein-Ponndorf-verley REDUCTION Wolff-kishner reduction Bouveault-Blanc reduction STEPHEN's reduction Answer :A

Discussion

30.	Name the reaction, heating of 1,2-dibromoethane with zinc powder ?
Answer» SOLUTION :DEHALOGENATION

Discussion

31.	Name the property which opposes the flow of liquids.
Answer» SOLUTION :VISCOSITY

Discussion

32.	Name the property responsible for spherical shape of water droplets.
Answer» SOLUTION :SURFACE TENSION

Discussion

33.	Name the property by which the dissolution of an ionic solid in water is possible.
Answer» SOLUTION :HYDROGEN BONDING.

Discussion

34.	Name the products obtained on the reductive ozonolysis of 2-methylbut-2-ene.
Answer» SOLUTION :ACETONE, ACETALDEHYDE and `H_2O_2`

Discussion

35.	Name the product obtained when Benzene is hydrogenated in presence of heated Nickel catalyst.
Answer» SOLUTION :CYCLOHEXANE ………..1

Discussion

36.	Name the product obtained on addition of a water molecule of propene in the presence of dil. H_2SO_4
Answer» SOLUTION : Propan-2-ol

Discussion

37.	Name the product obtained on distillation of phenol with zinc.
Answer» SOLUTION :BENZENE

Discussion

38.	Name the product formed when HBr reacts with 2 - methyl propene.
Answer» Solution :`CH_(3) - UNDERSET(CH_(3))underset(\|)(C) = CH_(2) + HBr RARR CH_(3) - underset(CH_(3))underset(\|)OVERSET(Br)overset(\|)C- CH_(3) ` `""` 2 - Bromo-2-methyl propane

Discussion

39.	Name the product formed when ethyne gas is passed through red hot iron tube.
Answer» ANSWER :BENZENE

Discussion

40.	Name the phenomenon as a reason of which water has unusual boiling point.
Answer» ANSWER :EXTENSIVE HYDROGEN BONDING.

Discussion

41.	Name the parameters that characterize a unit cell
Answer» SOLUTION :A unit cell is characterized by the following six PARAMETERS: (i)The DIMENSIONS of the unit cell along three edges. These are represented by a. b and c. The edges may or may not be mutually perpendicular. (II) The angles between the edges. These are represented by `alpha, beta` and `gamma`. The ANGLE `alpha` is between b and c. `beta` is between a and c and `gamma` is between a and b.

Discussion

42.	Name the periods whose elements show diagonal relationship.
Answer» SOLUTION :SECOND and THIRD

Discussion

43.	Name the parameter that charcterize a unit cell.
Answer» Solution :A unit CELL is charaterized by the FOLLOWING six paraments. (i)The dimensions of the unit cell ALONG three edges. These are repesented by a,b and c. The edges may of may not be mutually perpendicular. (ii)the ANGLES between the edges. These are represented by ` alpha, beta and gamma.` the angle `alpha`, is betweenb and c. ` beta`is between a and c and ` gamma` is between a and b.

Discussion

44.	Name the p block elements that exist as liquids at room temperature.
Answer» SOLUTION :GALLIUM and BROMINE

Discussion

45.	Name the oxides of nitrogen.What are the sources?
Answer» SOLUTION :Nitrogen monoxide (NO), Nitrogen dioxide `(NO_(2))`, DINITROGEN TRIOXIDE `(N_(2)O_(3)`, Dinitrogen tetroxide `(N_(2)O_(4))`, Dinitrogen pentoxide `(N_(2)O_(5))` The source of OXIDE of nitrogen are combustion of fossil fuel, especially, petrleum. They are also formed by reaction of `N_(2)` and `O_(2)` in presence of LIGHTENING.

Discussion

46.	Name the organic product obtained when Benzee is treated with excess of chlorine in presence of anhydrous Aluminium chloride.
Answer» ANSWER :CHLOROBENZENE

Discussion

47.	Name the organic product obtained when sodium benzoate is treated with sodalime.
Answer» ANSWER :BENZENE

Discussion

48.	Name the organic compound whose auto-oxidation is used to produce H_2O_2 commercially or industrially.
Answer» ANSWER :Ethylanthraquinol.

Discussion

49.	Name the orbital whenn=3 and l=2
Answer» ANSWER :3D

Discussion

50.	Name the non-stoichiometric point defect responsible for colour in alkali metal halides.
Answer» SOLUTION :Metal excess or ANIONIC vacancies or F-centres, which is due to ELECTRONS ENTRAPPED in anionic vacancies.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Name two intermolecular forces that exist between HF molecules in liquid state.

Name two experiments which show the dual nature of electrons.

Name two electron rich hydrides.

Name two compounds which retard the decompositiion of H_(2)O_(2) solution.

Name two compounds which retard decompostion of hydrogen peroxide

Name two compounds which do not contain halogens but give positive Beilstein test.

Name three oxoacids of nitrogen. Write the disproportionation reaction of that oxoacid of nitrogen in which nitrogen is in +3 oxidation state.

Name three natural sources of air pollution.

Name three ions which are isoelectronic with F^(-) ion

Name three methods generally used in green chemistry.

Name three common forms of CaCO_3.

Name the types of chemical bonds.

Name the types of bonds present in ice?

Name the type of structure of silicated in which one oxygen atom of [SiO_(4)]^(4-) is shared ?

Name the type of reaction that occurs at anode in an electrochemical cell. Give an example.

Name the type of point defect that occurs in a crystal of zinc sulphide.

Name the type of point defect that occurs in a crystal of zinc sulphide .

Name the type of Hydrogen bonding in ortho-nitrophenol.

Name the type of hybridisation of each C-atom in a molecule of (i) propylene (propene) (ii) propyne. How manysigmaand pi-bonds are present in each case ?

Name the two type of the structure of silicate in which one oxygen arom of [SiO_(4)]^(4) is shared?

Name the two conditions which mout be satisfied for hydrogen bonding to take place in a molecule.

Name the two allotropic forms of hydrogen. Which is more abundant?

Name the three physical states of matter.

Name the source of sodium chloride.

Name the shapes of the following molecules: CH_(4) , C_(2)H_(2)m CO_(2)

Name the scientist who introduced absolute scale of temperature.

Name the regions of atmosphere were, the temperature increases and decreases with altitude.

Name the rule that is observed during the addition of an unsymmetrical molecule to an unsymmetrical alkene.

Name the reaction Me^(-) -= -overset(O)overset(||)(C)-Me underset(CH_(3)-underset(OH)underset(|" ")(CH)-CH_(3))overset(Al(OCHMe_(2))_(3))rarr Me - -= - overset(OH)overset(|)(CH)-Me

Name the reaction, heating of 1,2-dibromoethane with zinc powder ?

Name the property which opposes the flow of liquids.

Name the property responsible for spherical shape of water droplets.

Name the property by which the dissolution of an ionic solid in water is possible.

Name the products obtained on the reductive ozonolysis of 2-methylbut-2-ene.

Name the product obtained when Benzene is hydrogenated in presence of heated Nickel catalyst.

Name the product obtained on addition of a water molecule of propene in the presence of dil. H_2SO_4

Name the product obtained on distillation of phenol with zinc.

Name the product formed when HBr reacts with 2 - methyl propene.

Name the product formed when ethyne gas is passed through red hot iron tube.

Name the phenomenon as a reason of which water has unusual boiling point.

Name the parameters that characterize a unit cell

Name the periods whose elements show diagonal relationship.

Name the parameter that charcterize a unit cell.

Name the p block elements that exist as liquids at room temperature.

Name the oxides of nitrogen.What are the sources?

Name the organic product obtained when Benzee is treated with excess of chlorine in presence of anhydrous Aluminium chloride.

Name the organic product obtained when sodium benzoate is treated with sodalime.

Name the organic compound whose auto-oxidation is used to produce H_2O_2 commercially or industrially.

Name the orbital whenn=3 and l=2

Name the non-stoichiometric point defect responsible for colour in alkali metal halides.