TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 7

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 7

151.   which of the following is called as royal disease?

           A)        Anemia                    

           B)        Leukemia

           C)        Hemophilia

           D)        Colour blindness

           

           Answer: (C)

152.   which of the following is NOT a vaccine?

           A)        Polio vaccine

           B)        BCG

           C)        Anti -rabies

           D)        Progesterone

           

           Answer: (D)

153.   Mutation was discovered by

           A)        Morgan

           B)        Huxley

           C)        Mendel

           D)        Hugo de Vries

           

           Answer: (D)

154.   The red colour of the blood is due to

           A)        albumin

           B)        hemoglobin

           C)        vitamin B₆

           D)        relaxin

           

           Answer: (B)

155.   Match List I with List II correctly and select your answer using the

           codes given below:

                       List I                                                   List - II

           a)         Growth hormone                1.  Pancreas

           b)         Thyroxin                              2.  Testis

           c)         Insulin                                 3.  Pituitary

           d)         Testosterone                    4.  Thyroid

           Codes:

                       a          b          c          d

           A)        3          4          1          2                     

           B)        4          3          2          1

           C)        1          2          3          4

           D)        2          1          4          3

           Answer: (A)

156.   Match List I with List II correctly and select your answer using the

           codes given below:

                       List I                                                   List - II

           a)         Artery                              1.  Pure blood

           b)         Vein                                 2.  Oxygenated blood

           c)         Pulmonary artery            3.  Deoxygenated blood

           d)         pulmonary vein                4.  Impure blood

           Codes:

                       a          b          c          d

           A)        2          3          4          1                     

           B)        3          4          1          2

           C)        4          1          2          3

           D)        1          2          3          4

           Answer: (A)

157.   Consider the following Statements:

           Assertion (A)  :        Malarial parasite feeds on the blood of man      

           Reason (R)     :         One of the parasite adaptations is loss of digestive system and hence depends on host for food.

          

Now select your answer according to the coding scheme given below:

 A)  Both (A) and (R) are true and (R) is the correct explanation of (A)    

 B)  Both (A) and (R) are false

 C) (A) is true but (R) is false

 D)  (A) is false but (R) is true

           

           Answer: (A)

158.   The carbon dioxide dissolved in water

           A)        enhances corrosion

           B)        suppresses corrosion

           C)        prevents corrosion

           D)        has no influence on corrosion

           

           Answer: (A)

159.   Nylon is a

           A)        polyester                    B)        polyethylene

           C)        polyamide                 D)        polysaccharide

           

           Answer: (C)

160.   One carat of diamond is

           A)        100 mg                                  B)        200 mg

           C)        300 mg                                  D)        400 mg

           

           Answer: (B)

161.   Sugar in blood and urine is tested with

           A)        Benedict’s solution                         

B)        Brine solution

           C)        Hypo solution                     

D)        Iodine solution

           

           Answer: (A)

162.   TV antenna elements are made up of

           A)        alumininum             B)        copper

           C)        tin                               D)        zinc

           

           Answer: (A)

163.   Dry ice is

           A)        liquid nitrogen

B)        purified ice

           C)        solid carbon dioxide

D)        supercooled ice

           

           Answer: (C)

164.   Which of the following is correctly matched?

           A)        Baking soda              -  Sodium bicarbonate

B)        Caustic soda             -  Calcium carbonate

           C)        Sodalime                   -  Sodium carbonate

D)        Washing soda          -  Calcium hydroxide

           

           Answer: (A)

165.   Which of the following is correctly matched?

           A)        Ascorbic acid             -  Vitamin

B)        Insulin                          -  Antiseptic

           C)        Penicillin                   -  Antipyretic

D)        Proteins                     -  Polysaccharide

           

           Answer: (A)

166.   Consider the following Statements:

           Assertion (A)  :        Rusting of iron quicker in sea water than in river water

           Reason (R)     :         Salinity helps in carrying current.

          

Now select your answer according to the coding scheme given below:

A)   Both (A) and (R) are true and (R) is the correct explanation of (A)    

B)  Both (A) and (R) are true, but (R) is not the correct explanation of (A)

C)  (A) is true but (R) is false

 D)  (A) is false but (R) is true

           

           Answer: (B)

TNPSC GROUP – I Exam- 2007

(Preliminary)

167.    Semiconducting property of silicon is due to

            A)        its positive temperature coefficient of resistance                      

B)        its negative temperature coefficient of resistance

            C)        wide band gap

D)        narrow band gap

Answer: (C)

168.    Light from the sun reaches the earth in

            A)        45 minutes                 B)        8 minutes

            C)        4 minutes                   D)        2 minutes

Answer: (B)

169.    Which of the following is used in electric heaters and irons?

            A)        Tungsten                        B)        Steel

            C)        Copper                          D)        Nichrome

Answer: (D)

170.    Which one of the following instruments is used to measure the speed of water through a pipe?

            A)        McLeod gauge                     B)        Pressure gauge

            C)        Screw gauge                        D)        Venturimeter

Answer: (D)

171.    The distance of stars is measured by the unit

            A)        Kilometer (km)                      B)        Angstrom (A) unit

            C)        Light year                              D)        Giga meter

Answer: (C)

172.    Theory of relativity was proposed by which one of the following scientists in the year 1905?

            A)        Ruther ford                            B)        Thomson

            C)        Bohr                                       D)        Einstein

Answer: (D)

173.    The moderator used in the nuclear reactor at Madras atomic power

station in Kalpakkam is

            A)        Water (H₂O)                           B)        Graphite

            C)        Heavy water(D₂O)                D)        None of these

Answer: (D)

174.    Ratio carbon in nature is produced ad a result of

            A)        the action of UV rays on ordinary carbon                                   

B)        the action of IR rays on ordinary carbon

            C)        the action of cosmic rays on earth’s atmospheric nitrogen

D)        the action of X-rays on ordinary carbon

Answer: (C)

175.    The speed of sound is higher in which one of the following mediums?

            A)        Liquids           B)        Solids

            C)        Gases             D)        Same in all

Answer: (B)