TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 5

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 5

101.    The end product of fermentation of molasses of sugarcane by yeast is

            A)        Pyruvate                                B)        Phenol

            C)        Lactic acid                             D)        Ethyl alcohol

Answer: (D)

102.    ‘ Species Plantarum’ was authored by

            A)        Hutchinson                           B)        Carolus Linnaeus

            C)        Engler and Prantl                D)        Bentham and Hooker

Answer: (B)

103.    The yellow colour of urine of the vertebrates is due to

            A)        Urochrome                            B)        Melanin

            C)        Uric acid                                D)        Cholesterol

Answer: (A)

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

            given below:

                        List I                                      List II

            a)         Glucose                          1.         Biopolymer

            b)         Serodiagnosis                2.         Reducing sugar

            c)         Serodiagnosis                3.         Separation technique

            d)         Electrophoresis              4.         HIV test

           

Codes:

                        a          b          c          d

            A)        2          4          3          1

            B)        1          3          4          2

            C)        1          2          3          4

            D)        4          3          2          1

Answer: (A)

105.    Which of the following is wrongly matched?

            A)        Microsporangial serus         -  Anther

            B)        Microspore                             -  Pollen grain

            C)        Megasporophyll                      -  Ovule

            D)        Microsporophyll                      -  Stamen

Answer: (A)

106.    Consider the following statements:

Assertion  (A) : RBC cells are found in the blood which carry  oxygen

 Reason (R)  : Haemoglobin pigments are involved in carrying the oxygen.

            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: (A)

107.    Who received the Nobel prize for the work on genes that control the

sense of smell ?

A)        Werner Arber and Daniel Nathans

B)        Niels Jerne and Georges Kohler

C)        Richard Axel and Linda Buck

D)        Konrad Bloch and Feodor Lynen

Answer: (C)

108.    Opsonin was discovered by

            A)        Jules Bordet                          B)        Christian Gram

            C)        Lata Mangeshkar                 D)        Louis Pasteur

           

           

Answer: (C)

109. The shape of the graph drawn between in  ri versus r for an intrinsic T

semiconductor is (ri -resistivity, T-temperature)

A)        Straight line              B)        Circle

C)        Parabola                  D)        Ellipse

Answer: (A)

110.    ‘One gene and one enzyme’ hypothesis was put forth by ……… in ………

            A)        Beadle and Tatum, E. coli

            B)        Beadle and Tatum, Neurospora

            C)        Jacob and Monad, Neurospora

            D)        Jacob and Monad, E. coli

           

            Answer: (B)

111.    The hormone which brings about characteristic changes in male at

puberty is called

A)        Androgen                  B)        FSH

C)        Adrenaline                D)        Testosterone

Answer: (D)

112.    Which of the following is correctly matched?

            A)        TNT                                         -  Fertilizer

            B)        Gasoline                                -  Pertrochemical

            C)        Potassium sulphate            -  Explosive

            D)        Cement                                  -  Moleculr Crystal

           

            Answer: (B)

113.    The focal length of two lenses in contact is given by

            A)        F=f₁-f₂                         B)        F= f₁ f₂

                                                                        1 = 1 + 1

            C)        F= f₁ + f₂                     D)        F    f₁   f₂

           

                                                           

            Answer: (D)

114.    Position effect is the result of

A)        translations               B)        inversions

C)        transcriptions           D)        deletions

Answer: (C)

115.    Triple vaccine is administered to a newborn child to immunize it against

A)        Whooping Cough, Tetanus and Measles

B)        Whooping Cough, Tetanus and Diphtheria

C)        Tetanus, Diphtheria, Measles and rubella

D)        Tetanus, Diphtheria, Samallpox and Rubella

Answer: (B)

116.    An example of addition co-polymer is

A)        Buna - S                                B)        PVC

C)        Neoprene                              D)        Glyptal

Answer: (A)

117.    A glass container ( m=1.65) is filled with a liquid of refractive index 1.46. When light is incident normally on the surface, the amount of light transmitted through the container is

A)        18%                            B)        36%

C)        44%                            D)        100%

Answer: (D)

118.    Leprosy is caused by

A)        Mycobacterium leprae

B)        Mycobacterium tuberculosis

C)        Corynebacterium disphtheria

D)        Varicella zoster

Answer: (A)

119.    The reaction that takes place in a Daniel cell is

A)        Cu+Hg ® Cu.Hg

B)        Zn^o + Cu² ® Zn²⁺ + CU^o

C)        Cu²⁺ + 2Ag ® Cu^o + 2Ag⁺             

D)        3fe²⁺ + Cr⁶⁺ ® 3Fe³⁺ + Cr³⁺

Answer: (B)

120.    Which of the following is correctly matched?

            A)        Nepenthes                -  Stoneworts

            B)        Drosera                      -  Hornworts

            C)        Utricularia                  -  Pitcher plant

            D)        Dionea                       -  Venus - fly - trap

            Answer: (C)

121.    Ants identify their food through

            A)        Chemical communication

            B)        audio communication

            C)        visual communication

            D)        olfacto communication

Answer: (D)

122.    Natural gas is a mixture of aliphatic hydrocarbons. What is the main

            important gas available in that?

            A)        Oxygen (O₂)              B)        Nitrogen (n₂)

            C)        Methane (CH₄)         D)        Carbon dioxide (CO₂)

Answer: (C)

123.    A moving coil galvanometer can be converted into and ammeter by connecting

            A)        a low resistance in parallel with a galvanometer

            B)        a high resistance in parallel with a galvanometer

            C)        a high resistance in series with a galvanometer

            D)        a low resistance in series with a galvanometer

Answer: (A)

124.    Biodiesel is obtained from which plant?

            A)        Mango                                    B)        Bamboo

            C)        Jatropha                                D)        Ficus

Answer: (C)

125.    Rubella virus causes

            A)        Smallpox                               B)        Measles

            C)        Chickenpox                          D)        Influenza

Answer: (B)