Saturday 31 May 2014

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 15

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 15


351.    Match List - I with List - II and select the correct answer using the
codes given below:
            List - I                                                 List  - II
 a)    Neutral Ferric chloride            1.  Identification of sulphur in    Solution                                                                  
b)         Fehling’s nitroprusside         2. To identify phenolic group
 c)         Sodium nitroprusside            3.  To identify phosphate
d)   Ammonium molybdate reagent     4.  To identify reducing sugars
            
                
Codes:
                        a          b          c          d
            A)        3          1          4          2
            B)        2          4          1          3
            C)        2          3          4          1
            D)        2          1          4          3








Answer: (B)








352.    Petroleum mainly contains
            A)        Aliphatic hydrocarbons
B)        Aromatic hydrocarbons
C)        Aliphatic alcohols
D)        None








Answer: (B)








353.    Bhopal gas tragedy of 1984 was caused by one of the following compounds:
            A)        CO                              B)        COCI2
C)        Methyl isocyanide    D)        Methyl isocyanate








Answer: (C)








354.    pH of blood is
            A)        8                                  B)        7.4
C)        6.4                               D)        4







Answer: (B)








355.    The blue colour of water in the sea is due to
            A)        absorption of other colours except blue by water molecules
B)        scattering of blue light by water molecules
C)        refraction of blue light by impurities in sea water
D)        refraction of blue sky by sea water








Answer: (B)

356.    The acid present in vinegar is
            A)        CH3COOH                             B)        H2SO4
C)        HCl                                         D)        HNO3








Answer: (A)








357.    When a lead storage battery in discharged
            A)        SO2 is evolved
B)        Lead is formed
C)        Lead sulphate is consumed
D)        H2SOis consumed








Answer: (D)








358.    Combustion chemically is
            A)        Decomposition
B)        Reduction
C)        Slow oxidation
D)        Rapid oxidation








Answer: (A)








359.    In plants, energy is produced during
            A)        Transpiration
B)        Photosynthesis
C)        Respiration
D)        Absorption








Answer: (B)








360.    The yellowing of leaf is caused by the deficiency of
            A)        Iron                                         B)        Cobalt
C)        Copper                                   D)        Zinc








Answer: (D)








361.    Identify the correct sequence of evolution in plants:
            A)        Pteridophyte - Gymnosperms - Thallophyte - Bryophyte         
B)        Gymnosperms - Pteridophte - Bryophyte - Thallophyte
C)        Bryophyte - Pteridophyte - Gymnosperms - Thallophyte
D)        Thallophyte - Bryophyte - Pteridophyte - Gymnosperms








Answer: (D)






362.    The vascular bundles arranged in a cycas petiole is
            A)        T - shaped                 B)        L - shaped
C)        C - shaped               D)        Inverted omega (W) shapped








Answer: (D)








363.    Which one of these is correctly matched?
            A)        Paddy             -  Blast disease
B)        Sugarcane    -  Ring disease
C)        Potato             -  Leaf spot
D)        Groundnut    -  Red rot








Answer: (A)








364.    When the soil is rich organic debris, it is known as
            A)        Humus soil                            B)        Clayey soil
C)        Loam soil                               D)        Organic soil








Answer: (A)








365.    A plant growing inside another plant of different species symbiotically
            is called
            A)        Parasite                                 B)        Saprophyte
C)        Semi - parasite                     D)        Endophyte







Answer: (D)


366.    “Survival of the fittest” was proposed in his theory evolution by
            A)        Darwin                         B)        Mendel
C)        Loam soil                    D)        De vries








Answer: (A)








367.    In rich polish which is left as a residue
            A)        is of no value
B)        has the same nutritive value
C)        twice as nutritious as rice
D)        None of these








Answer: (D)








368.    The pteridophyte produces two kinds of spores
            A)        Lycopodium            B)        Selaginella
C)        Psilotum                  D)        Adiuantum








Answer: (B)








369.    Lepidodendron is a fossil which represents
            A)        Root                            B)        Stem
C)        Fruit                            D)        Leaf








Answer: (B)








370.    These cells are loosely arranged in a plant body
            A)        Parenchyma                         B)        Collenchyma
C)        Sclerenchyma                      D)        Aerenchyma








Answer: (A)








371.    Maximum rate of photosynthesis occurs in
            A)        White light               B)        Red light
C)        Green light              D)        Red and blue light








Answer: (A)








372.    Resupination is a characteristic feature to the flowers of this family
            A)        Oleaceae                               B)        Myrtaceae
C)        Orchidaceae                         D)        Malvaceae








Answer: (C)








373.    The substituted food contains one of the following is
            A)        Fat                                          B)        Water
C)        Carbohydrate                        D)        Protein








Answer: (C)









374.    When aerobic and anaerobic methods of respiration are compared
            regarding their efficiency in energy release,
            A)        aerobic method is more efficient than anaerobic method
B)        anaerobic method is more efficient than aerobic method
C)        both the methods are exactly equal
D)        both the methods are approximately equal








Answer: (A)








375.    Which one of the following is incorrectly matched?
            Common name                   Scientific name
            A)  Jelly fish                          -  Anabas
            B)  Silver fish                        -  Lepisma
            C)  Lung fish                         -  Cycloid scales
            D)  Cuttle fish                       -  Sepia









Answer: (A)

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