TNPSC Exam-GROUP- IV - Subject wise analysed Previous Year questions and Answers-Science-Part-3

TNPSC Exam-GROUP- IV - Subject wise analysed Previous Year questions and Answers-Science-Part-3

TNPSC GROUP – IV  2008

Science

50.       Rocket launching station, which was dedicated to united nations in the year 1968 by ISRO, is situated at

            A)        Thumba

B)        Chennai

            C)        Delhi                         

D)        Mumbai

Ans : (A)

51.       The electrical energy consumed by a 3 kW stove is switched on for 6 hours is

            A)        2 units

B)        18 units

            C)        0.5 unit                                  

D)        500 unit

Ans : (B)

52.       Which of the following are primary colours?

            A)        Red, Green and Violet

B)        Blue, Cyan and Magenta

            C)        Red, Cyan and Blue                                  

D)        Red, Green and Blue

Ans : (D)

53.       The relation between coefficient of linear expansion (a) and the coefficient of volume expansion (g) is

            A)        a = 3g

B)        2g = a

            C)        g= 2a                         

D)        g= 3a

Ans : (D)

54.       The radio –isotope used to check the effective functioning of heart is

            A)        I¹³¹

B)        Na²⁴

            C)        Fe⁵⁹                             

D)        P³²

Ans : (B)

55.       The Speed of ultra centrifuges to concentrate viruses in solution is

            A)        5X10^-5 rpm

B)        5X10^-6 rpm

            C)        5X10⁶ rpm                

D)        5X10^-6 rpm

Ans : (C)

56.       Metals are electropositive because they

            A)        Accept electrons

B)        Donate electrons

            C)        are neutral

D)        have electrons

Ans : (B)

57.       Plaster of pairs has the molecular formula

           

Ans : (C)

58.       Stainless steel contains

            A)        Copper, nickel, chromium

B)        Copper, tungsten, chromium

            C)        Iron, nickel. chromium

D)        Iron. tungsten, Chromium

Ans : (C)

59.       Oxides of metals are generally

            A)        Acidic

B)        neutral

            C)        basic

D)        amphoteric

Ans : (C)

60.       Rectified Sprit is

            A)        90% ethanol and 10% water

B)        80% ethanol and 20% water

            C)        95.6% ethanol and 4.4% water

D)        96.5% ethanol and 3.5% water

Ans : (C)

61.       Which is used as a fire extinguisher?

            A)        Oxygen

B)        Carbon dioxide

            C)        Carbon monoxide

D)        Water gas

Ans : (B)

62.       Vermitech is a term coined by

            A)        Dr. Sultan Ismail

B)        Dr. Abdul Ismail

            C)        Dr. J.A. Bose

D)        Dr. M.S. Swaminathan

Ans : (A)

63.       The polio virus enters the body through

            A)        mosquito bites

B)        Tick bites

            C)        contaminated food & water

D)        Saliva and secretion from nose

Ans : (D)

64.       The bacteria responsible for nitrogen fixation is found in the root of

            A)        Grass

B)        Citrus plant

            C)        Leguminous plant

D)        Neem tree

Ans : (C)

65.       Gobar Gas contains

            A)        Methane

B)        Methane and Ethane

            C)        Ethane

D)        Petrol gas

Ans : (A)

66.       Which of the following is odd one in phloem tissue?

            A)        Sieve tube

B)        Companion cell

            C)        Phloem fibre

D)        Wood fibre

Ans : (D)

67.       The type of sexual reproduction that takes place in spirogyra is

            A)        fragmentation

B)        sporulation

            C)        conjugation

D)        fission

Ans : (C)

68.       The plant kingdom is divided into two major division

            A)        Monocot and dicot plants

B)        bryophytes and pteridophytes

            C)        Cryptogams and Phanerogams

D)        aquatic and terrestrial

Ans : (C)

69.       Malaria is caused by

            A)        Female anopheles mosquito

B)        bad-air

            C)        virus

D)        plasmodium

Ans : (D)

70.       The metal present in haemoglobin of our blood is

            A)        copper

B)        iron

            C)        silver

D)        gold

Ans : (B)

71.       The fish that gives birth to its young ones is

            A)        dolphin

B)        star fish

            C)        Shark

D)        Jelly fish

Ans : (C)

72.       The discoverer of blood circulation is

            A)        Alexander fleming

B)        Einstein

            C)        William Harvey

D)        Edward Jenner

Ans : (C)

73.       Ornithology deals with the

            A)        Study of insects

B)        Study id worms

            C)        Study of fishes

D)        Study of birds

Ans : (D)