TNPSC Exam-GROUP – II - Subject wise analysed questions and Answers- Science-Part-4

TNPSC Exam-GROUP – II - Subject wise analysed questions and Answers- Science-Part-4

76.       A plant that lives in a pond is called as

            A)        Limnophyte                           B)        Xerophyte

            C)        Mesophyte                            D)        Lithophyte

Ans : (A)

77.       What is the chemical difference between celluloid and cellophane?

            A)        These two materials have the same chemical composition

B)        Cellophane is much more inflammable than celluloid

            C)        Celluloid contains nitrogen while cellophane does not                      

D)        Photographic images stick better to celluloid

Ans : (C)

78.       The study of age of the trees by counting annual rings is called

            A)        Dendrogram             

B)        Dendrochronology

            C)        Entomology                          

           D)       Gerontology

Ans : (B)

79.       Which of the following gases is adsorbed mostly by activated charcoal?

            A)        CO₂                                         B)        N₂

            C)        CH₂                                         D)        Ar

Ans : (D)

80.       Leprosy is a

            A)        Viral disease                         B)        Bacterial disease

            C)        Dermatomyosistis                D)        none of these

Ans : (B)

81.       Natural system of plant classification was proposed by

            A)        Cronquist                              B)        Engler and Pranti

            C)        Linnaeus                               D)        Bentham and Hooker

Ans : (D)

82.       Which material is used for Galvanization of iron?

            A)        Chromium                             B)        Zinc

            C)        Nickel                                     D)        Manganese

Ans : (B)

83.       Detritus

            A)        feed upon organic decayed food from the soil

            B)        take food into endoplasm

            C)        take food from endoplasm             

D)        take food from earthworm

Ans : (A)

84.       Fuse wire is a wire of ……….. resistance and ………… melting point.

            A)        low, high                    B)        high, high

            C)        low, low                      D)        high, low

Ans : (D)

85.       Which statement is correct?

            A)        All minerals are ores

            B)        A mineral cannot be an ore

            C)        An ore cannot be a mineral                      

D)        All ores are minerals

Ans : (D)

86.       Tusk of elephant is

            A)        modified incisors                  B)        modified canines

            C)        modified premolar                D)        modified molar

Ans : (A)

87.       Radio activity was discovered by

            A)        Pierre Curie                          B)        Madam Cuire

            C)        Rutherford                             D)        Henri Becquerel

Ans : (D)

                         TNPSC GROUP – II  2009 (March)

                                            Science

88.       Glycolysis is the conversion of

            A)        glucose to glycogen                                   

B)        glycogen to glucose

            C)        glucose to pyruvic acid      

D)        glucose to citric acid

Ans : (C)

89.       Protoplasm is the ‘ Physical basis of Life’ was said by

            A)        Dujardin                                 B)        Schwann

            C)        Huxley                                   D)        Waston

Ans : (C)

90.       ATP is

            A)        an enzyme which brings about oxidation

B)        a molecule which contains high energy phosphate bonds

            C)        a hormone

D)        a protein

Ans : (B)

91.       In annual plant, exchange of gases takes place mainly through

            A)        stomata                                  B)        stem

            C)        leaf scars                               D)        lenticels

Ans : (A)

92.       The end product of anaerobic respiration place mainly through

            A)        Lactic acid

B)        Ethyl acid

C)        Ethyl alcohol + CO₂

            D)        Lactic acid + CO₂

Ans : (A)

93.       Endocrine glands

            A)        are ductless glands            

            B)        discharge their secretions in blood

            C)        secrete hormones

D)        All of these

Ans : (D)

94.       Heparin is a /an

            A)        coagulant                              B)        anti - coagulant

            C)        haemostatic                          D)        None of these

Ans : (B)

95.       Which one of the following is Mendelian dihybrid ratio?

            A)        1 : 1 : 1 : 1                              B)        9 : 3 : 3 : 1     

C)        7 : 1 : 1 : 7                              D)        1 : 7 : 7 : 1

Ans : (B)

96.       with reference to the origin of heartbeat in man, which of the following statements are false?

            i)          Sino-auricular node (SA node) does not act as pace – maker

            ii)         Sino –auricular node acts as pace maker

            iii)        Pace – maker lies at the top of the right auricle

            iv)        Pace-maker is situated at the top of the left auricle

            Of these :

            A)        (i) only                        B)        (i) and (ii)

            C)        (i) and (iv)                  D)        (iii) and (iv)

Ans : (C)

97.       When the speed of a body id doubled its kinetic energy becomes

            A)        doubled                                 B)        half

            C)        quadruple                              D)        one- fourth

Ans : (C)

98.       When a body moves with uniform velocity its acceleration is

            A)        doubled                                 B)        tripled

            C)        zero                                        D)        maximum

Ans : (C)

99.       The principle of Dynamo was discovered by

            A)        Sir Humphry Davy              

            B)        Michael Farady

            C)        Albert Einstein

D)        Max Planck

Ans : (B)

100.    The electric fittings are earthed so that

            A)        electricity may not leak

B)        there may be a smooth flow of electricity

C)        current may pass to the earth in case of a short circuit, without causing any harm

D)        to prevent short circuit

Ans : (C)