TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 6

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 6

TNPSC GROUP - I Exam- 2009

(Preliminary Exam-Original Question Paper)

126.   Fuel cells are used in

           A)        aircrafts

           B)        electric locomotives

           C)        space crafts

           D)        submarines

           

           Answer: (C)

127.   From which of the following biodiesel is obtained?

           A)        Ethyl alcohol                   B)        Cellulose

           C)        Begasse                        D)        Jatropha

          

           Answer: (D)

128.   The plant group which yields ‘Taxol’ belongs to

           A)        Bryophyte

           B)        Gymnosperm

           C)        Pteridophyte

           D)        Lichen

          

           Answer: (B)

129.   Alga used for hydrocarbon production is

           A)        Gracilaria                    B)        Chlorella

           C)        Botryococcus             D)        Sargassum

           

           Answer: (C)

130.   Good plant source of choline are

           A)        yeast                          B)        mushroom

           C)        green leaves            D)        cereal grains

           

           Answer: (C)

131.   Ornithophily refers to

           A)        pollination through wind

B)        pollination through bird

           C)        pollination by insects

           D)        dispersal of seeds by wind

           

           Answer: (B)

132.   Identify the chemosynthetic bacteria among the following:

           A)        Rhizobium                   B)        Clostridium

           C)        Nitrobacter                  D)        Beggiatoa

           

           Answer: (D)

133.   The removal of water from the plants in the form of liquid droplets is

           A)        guttation                    B)        transpiration

           C)        transduction             D)        transformation

           

           Answer: (A)

134.   ‘ Sirenin is a sex hormone produced by

           A)        alga                     B)        fungus

           C)        lichen                  D)        bacterium

           

           Answer: (B)

135.   Which one of the following is a total stem parasite?

           A)        Cuscuta                     B)        Drosera

           C)        Viscum                     D)        Vanda

           

           Answer: (A)

136.   The plant which was successfully used in the production of edible

vaccine is

           A)        Pea                            B)        mango

           C)        potato                        D)        cabbage

           

           Answer: (C)

137.   Identify the characteristic feature of a prokaryotic cell:

           A)        Presence of cell wall

           B)        Presence of 80s ribosome

           C)        Absence of genetic material

D)        Presence of 70s ribosome

          

           Answer: (D)

138.   During respiration the oxidative phosphorylation takes place in

           A)        matrix of chloroplast

           B)        matrix of mitochondrion

           C)        inner membrane of mitochondrion

D)        grana of chloroplast

           

           Answer: (C)

139.   Mitochondria are present in all cells, EXCEPT

           A)        yeast                           B)        bacteria

           C)        fungi                           D)        algae

           

           Answer: (B)

140.   Which of the following is used for crystal structure studies?

           A)        Infrared spectroscopy

           B)        Raman spectroscopy

           C)        Atomic emission spectroscopy

D)        X-ray diffraction

           

           Answer: (A)

141.   The scientist who first sent electromagnetic waves to distant places is

           A)        James Clark Maxwell

           B)        Heinrich Hertz

           C)        Thomas Alva Edison

D)        J.L. Baird

           

           Answer: (B)

142.   In the electrical circuit of a house the fuse is used

           A)        to regulate the current

           B)        to load

           C)        as safety device

D)        as step – down device

           

           Answer: (C)

143.   Hexadecimal is the number system with base

           A)        10                                B)        16

           C)        8                                  D)        2

           

           Answer: (B)

144.   The radius of an atom is

           A)        10^-12m                         B)        10^-15m

           C)        10^-16m                         D)        10^-10m

           

           Answer: (D)

145.   The rays similar to X-rays but of smaller wavelength that are given off by radioactive substance are

            A)        α- rays                        B)        β - rays

           C)        g- rays                       D)        cosmic rays

           

           Answer: (C)

146.   In an LCR circuit which will give a phase lead to current than voltage?

            A)        L (inductance)           B)        C (capacitance)

           C)        R (resistance)           D)        all together

           

           Answer: (B)

147.   A drop of water is spherical due to

            A)        surface tension          B)        low pressure

           C)        air resistance            D)        viscosity of water

           

           Answer: (A)

148.   The frequency of ultrasound wave is typically

            A)        above20 kHz            B)        above 20,000 kHz

           C)        below 20 kHz           D)        below 2 kHz

           

           Answer: (A)

149.   Which hormone is responsible for ejection of milk?

           A)        Oxytocin                      B)        Prolactin

           C)        Thyroxine                   D)        Testosterone

           

           Answer: (A)

150.   In human 45 numbers of chromosomes (22AA+XO) is resulted in

            A)        Turner’s syndrome            

            B)        Down syndrome

           C)        Klinefelter’s syndrome

           D)        Edward’s syndrome

           

           Answer: (A)