TNPSC Exam-GROUP- IV - Subject wise analysed Previous Year questions and Answers-Science-Part-2

TNPSC Exam-GROUP- IV - Subject wise analysed Previous Year questions and Answers-Science-Part-2

TNPSC GROUP – IV  2011

Science

27.       Normal temperature of human body is

            A)        37° C                          B)        90 K

            C)        37 K                            D)        100° C

Ans : (A)

28.       The general molecular formula of alkynes is

    

        A)        C _n H_2n+2                     B)        C _n H_2n

        C)        C _n H_2n-2                     D)        C _n H_2n+1

Ans : (C)

29.       Flavivirus causes

            A)        Filariasis             B)        Cholera

            C)        Dengue fever      D)        Malaria

Ans : (C)

30.       The enzyme used to join the broken DNA fragment is

            A)        DNA polymerase

B)        Alkaline Photase

            C)        DNA Ligase                         

D)        Restriction Endonuclease

Ans : (C)

31.       One Horsepower (H.P.) is equal to

            A)        846 watt

B)        546 watt

            C)        946 watt                                

D)        746 watt

Ans : (D)

32.       Edible mushrooms are

            A)        Agaricus bisporous

B)        Rhizopus

            C)        Mucor                        

D)        Neurospora

Ans : (A)

33.       World has become a global village due to

            A)        Green revolution

B)        Communication and information revolution

            C)        Blue revolution                                

D)        Industrial revolution

Ans : (B)

34.       The method of respiration which takes place in euglena is

            A)        Contraction                           B)        Absorption

            C)        Diffusion                               D)        Conduction

Ans : (C)

35.       Newton’s third law is applicable to bodies

            A)        at rest only                            

            B)        in motion only

            C)        both at rest and in motion                          

D)        with same mass

Ans : (C)

36.       Metal present in blood is

            A)        Al                                B)        Mg

            C)        Fe                               D)        Cu

Ans : (C)

37.       Who is the inventor of steam engine?

            A)        James Watt                B)        Gopal

            C)        R. Bhatt                       D)        Mohini sethi

Ans : (A)

38.       Blood Platelets help in

            A)        Immunity

B)        Gaseous clotting

            C)        Blood clotting                       

D)        Acid-base balance

Ans : (C)

39.       The unit of radiation exposure is

            A)        candela               B)        dioptre

            C)        Kelvin                  D)        roentgen

Ans : (D)

40.       _P H value of blood is

            A)        5.5 to 7.5                                B)        4.5. to 5.5

            C)        7.3 to 7.5                                D)        4.0  to 4.4

Ans : (C)

41.       Severe diarrhea is a symptom of

            A)        Tuberculosis          B)        Cholera

            C)        Leprosy                  D)        Anthrax

Ans : (B)

42.       Which one of the following is a short day plant?

            A)        Mirabilis

B)        Nicotiana tobacum

            C)        Beta vulgaris                                    

D)        Spinacea oleracea

Ans : (C)

43.       Which of the following are primary colours ?

            A)        Red, green and blue

B)        Red, cyan and blue

            C)        Blue, cyan and magneta               

D)        Violet, red and green

Ans : (A) 

44.       The structure of methane is

            A)        octahedral

B)        tetrahedral

            C)        square planar          

            D)        linear

Ans : (B)

45.       Effective drug for TB is

            A)        Isoniazid

B)        Penicillin

            C)        Azidothymidine                   

D)        All of these

Ans : (A)

46.       Which one of the following is not a kind of cell of xylem tissue ?

            A)        Tracheids

B)        Tracheae

            C)        Companion cells                 

D)        Wood fibres

Ans : (C)

47.       Which is the Universal donor blood group ?

            A)        O                                 B)        A

            C)        B                                 D)        AB

Ans : (A)

48.       Which of the following machines is used to take sectional images of the body ?

            A)        Endoscope              B)        Laparoscope

            C)        ECG machine         D)        CT Scanner

Ans : (D)

49.       The brain of a computer is

            A)        CPU                           B)        UPS

            C)        CAD                           D)        IBM

Ans : (A)