Applied Chemistry, Basic Chemistry ,MCQ Question Paper of BE 1 and 2 Semester,Download Previous Years Question Paper 7

S.B. Roll No……….

APPLIED CHEMISTRY-II

2^nd Exam/Common/0451/5404/Dec’11

Duration : 2½ Hrs                                                                                   M. Marks: 75

1.     Reducing agent is a substance which can

(a)  Accept electrons

(b) Accept protons

(c)  Donate electrons

(d) Donate protons

2.     E.C.E is more for

(a)  Hydrogen

(b) Copper

(c)  Zinc

(d) Silver

3.     During electrolysis, all ions

(a)  Move in the same direction

(b) Move towards oppositely charged electrode

(c)  Remains stationary

(d) None of these

4.     Electric current is the flow of

(a)  Ions

(b) Atoms

(c)  Electrons

(d) None of these

5.     When aqueous sodium chloride is electro lysed, the product obtained at the cathode is

(a)  Hydrogen

(b) Chlorine

(c)  Sodium metal

(d) Oxygen

6.     The reactions in which oxidation and reduction go side by side called

(a)  Oxidation reaction

(b) Reduction reaction

(c)  Redox reaction

(d) Exothermic reaction

7.     In the electroplating of metals, anode is made up of

(a)  Pure metal

(b) Impure metal

(c)  Both a and b

(d) Electrolyte

8.     Tetravalency of carbon can be explained by

(a)  Resonance

(b) Hybridization

(c)  Inductive effect

(d) None of these

        9.Graphite is used as electrodes because ‘it has the property of:

(a) Good conduction of electricity

(b) Bad conduction of electricity

(c) Metallic lustre

(d) None of these

       10. The property of self linking of carbon atoms is known as

          (a) Catenation

(b) Polymerization

(c) Carbonization

(d) None of these

11. The common name of H₃COOH is:

(a)Formic acid

(b) acetic acid

(c) carbonic acid

(d) None of these

12. Hydrocarbons containing triple bonds are known as:

(a) Alkanes

(b) Alkenes

(c) Alkynes

(d) None of these

13. Cyanides are also known as

(a) Alkane nitriles

(b) Imines

(c) amines

(d) amides

14. The organic compound present in vinegar is:

(a) Ethanoic acid

(b) propanoic acid

(c) methanoic acid

(d) butanoic acid

15. The aromatic smell of flowers is due to the presence of:

(a) Alcohols

(b) acids

(c) esters

(d) amines

16. Which of the following is not one of the seven fundamental units?

(a) Kilogram

(b) Candela

(c) Mole

(d) Watt

17. I calorie=……………….Joules

(a) 4.2

(b)4.8

(c) 4.6

(d) 4.9

18.Freezing point of water at 1 atm pressure of Kelvin scale is

(a) 0K

(b) 1K

(c) -273K

(d) +273K

19. Which of the following is not an element?

(a) Diamond

(b) Graphite

(c) Ozone

(d) Sand

20. Which of the following is a metalloid?

(a) Antimony

(b) Aluminium

(c) Copper

(d) Silver

21. Which has the maximum viscosity?

(a) Water

(b) Glycol

(c) Acetone

(d) ethanol

22. The charge on a cation M is +2 and on anion A is -3. The compound formed has the formula

(a) MA₂

(b) M₂A₃

(c) M₃A₂

(d) M₂A

23. NaCl is a chemical formula of:

(a) Washing soda

(b) baking soda

(c) sugar

(d) common salt

24. Which of the following has the largest number of atoms?

(a) 0.5 g atom of C

(b) .5 g of C

(c) 0.25 mole of C

(d) 1 g of C

25. Mass of 0.40  moles of CO₂ is

(a) 40g

(b)44g

(c)17.6g

(d)12.6g

26.I a.m.u. is mass of:

(a) 1 atom of C

(b) 12 atoms of C

(c) 1/12^th of C atom

(d) 6.022x10²³atoms of C

27. Mass of 0.1 mole of CaCO3 is

(a) 1g

(b) 10g

(c) 100g

(d) 1000g

28. Neutrons are present in all atoms except

(a) He

(b) C

(c) H

(d) Ne

29. The designation of an orbital with n=4 and 1=3 is

(a) 4s

(b)2P

(c) 4d

(d) 4f

30. The lightest particle among the following is

(a) Proton

(b) neutron

(c) electron

(d) atom of hydrogen

31. A pie bond is formed by the overlapping of

(a) S-s orbital

(b) s-p orbital

(c) p-p

(d) d-d orbital

32. Series of lines present in visible region of Hydrogen spectrum is

(a) Lyman

(b) Balmer

(c) Paschen

(d) Brackett

33. As we move away from nucleus, the energy of the shell

(a) Decreases

(b) Increases

(c) remains the same

(d) neither decreases nor

34. Which of the following noble gases has lowest atomic number

(a) Ne

(b) He

(c) Kr

(d) Xe

35. The shape of 2s orbital is

(a) Dumbbell

(b) Tetrahedral

(c)Pyramidal

(d) Spherical

36. If the mass of an atom is 90 and number of neutrons is 50 its atomic number is

(a) 40

(b) 50

(c)90

(d) 140

37. The quantum number representing shapes of the electron cloud is

(a) n

(b) I

(c)m
(d)s

38. The size of nucleus of an atom is of the order of

(a) 10^-8

(b)10^-13

(c)10^-4

(d)10^-6

39. The charge on the electron was found by:

(a) J.J. Thomsan

(b) miliken

(c) Faraday

(d)Goldstein

40. The number of elements present in the 3^rd period is

(a) 6

(b)18

(c)32

(d)8

41. Every period in the periodic table ends with

(a) An alkali metal

(b) a halogen

(c) an inert gas

(d)a trasition element

42. The element with atomic number 26 will be found in the group

(a) 4

(b)6

(c)8

(d)10

43.The total number of actinides in the periodic table are

(a) 12

(b) 13

(c)14

(d)15

44. The elements of group 16 in periodic table are known as

(a) Alkali metals

(b)alkaline earths

(c)chalcogens

(d)halogens

45. Halogens belong to

(a)p-block

(b)s-block

(c)d-block

(d)f-block

46. In the periodic table, the position of the element still uncertain is of

(a)He

(b)H

(c)Li

(d)C

47. The purest form of water obtained from natural sources is:

(a) Spring water

(b)rainwater

(c)sea water

(d)lake water

48. Temporary hardness of water is due to presence of calcium and magnesium

(a)Chlorides

(b)Sulphates

(c)Bicarbonates

(d)Nitrates

49. The process of destroying the disease producing bacteria or micro-organisms from water is known as

(a)aeration

(b)sedimentation

(c)coagulation

(d)disinfection

50. Permanent hardness is due to the presence of Ca and Mg as

(a)carbonates only

(b)bicarbonates only

(c)chlorides only

(d)chlorides and sulphates

51. Permanent hardness can be removed by adding

(a)C12

(b)Na2CO3

(c)Bleaching powder

(d)KMnO4

52.The chemical name of permutit is:

(a)Potassium zeolite

(b)sodium zeolite

(c)calcium zeolite

(d)magnesium zeolite

53. Hardness can be estimated

(a)Clark’s method

(b)soap titration method

(c)EDTA method

(d)both b and c

54. On boiling water becomes free from:

(a)permanent hardness

(b)temporary hardness

(c)suspended impurities

(d)floating impurities

55. Exhausted permutit is regenerated by washing it with:

(a)NaCl

(b)NaOH

(c)HCl

(d)KOH

56.The temporary hardness of water due to calcium bicarbonates can be removed by:

(a)Bleaching powder

(b)sodium carbonate

(c)Chlorine

(d)Potassium carbonate

57.In hot soda lime process, temporary hardness of water can be removed by

(a)lime

(b)magnesium hydroxide

(c)fine sand layer

(d)coarse sand layer

58. The process of removing extra common salt from water is called:

(a)De-ionization

(b)desalination

(c)disinfection

(d)softening

59. Coagulants help in setting of:

(a) Colloidal particles only

(b)Fine suspended impurities

(c)Suspended impurities only

(d)both a and c
60. A law which governs the effect of conc. On the rate of reaction is called

(a) Dalton law

(b)Le-chatelier’s principle

(c)Law of chem.. equilibriul

(d) Law of mass action

61. Theory of ionization was given by:

(a)Bohr

(b)Arrhenius

(c)Rutherford

(d)Newton

62. The conjugate acid of NH₂is

(a)NH₃

(b)NH₂OH

(c)NH₄

(d)N₂H₄

63. Ionic product of water changes when

(a)Anacid is added to water

(b)A base is added to water

(c)Both acid and base are added to water

(d)Temp. is changed

64.A buffer mixture of ammonium chloride and ammonium hydroxide is diluted with water, its pH will

(a)increases

(b)decreases

(c)remains the same

(d)becomes 7

65. Buffer action of a buffer is due to:

(a)common ion effect

(b)Association

(c)dissociation

(d)heat production

66. The indicator used in titration of strong acid and strong base is

(a)litmus

(b)methyl orange

(c)phenolphathalein

(d)methyl red

67. HCl is stronger acid than acetic acid because

(a)It can neutralize large quantity of alkali

(b)it can corrode anything it comes in contact

(c)it ionizes completely to ions in aqueous soln.

(d)none of these

68. Hydrolysis of sodium acetate will give:

(a)Basic soln.

(b)acidic soln.

(c)neutral soln.

(d)normal soln.

69. Anaqueous soln. whose pH is O is:

(a)Alkaline

(b)acidic
(c) neutral

(d)amphoteric

70. Strong electrolytes are those which:

(a)Dissolve readily in water

(b)conduct electricity

(c)dissociate into ions at high dilution

(d)cannot dissociate into ions

71. The unit of electrochemical equivalent is:

(a)Gram

(b)gram/ampere

(c)gram/coulombs

(d)coulombs/gram

72. One Faraday is equal to

(a)9650 coulombs

(b)39650 coulombs

(c)29650 coulombs

(d)96500 coulombs

73. On electrolys is of dil. H₂SO₄ soln. between platinum electrodes, this gas evolved at the anode is

(a)O₂

(b)H₂

(c)SO₂

(d)SO₂

74. Which of the following battery is rechargeable?

(a)Dry cell

(b)mercury cell

(c)Ni-Cd cell

(d)H2-O2 cell

75. In electrolytic refining metal to be purified is made as:

(a) Anode

(b)cathode

(c)neutral

(d)none