TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 10

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 10

226.    An example of semi-conductor is

            A)        German silver                       B)        Germanium

            C)        Phosphorus                          D)        Arsenic

Answer: (B)

227.    Unit of charge is

            A)        Coulomb                                B)        Faraday

            C)        Newton                                  D)        Volt

Answer: (A)

228.    Non-stick kitchenwares are coated with

            A)        PVC                           B)        Graphite

            C)        Teflon                          D)        Silicon

Answer: (C)

229.    Find the odd place out:

            A)        Kakarapura              B)        Kavanur

            C)        Kodaikanal              D)        Hyderabad

Answer: (A)

230.    Persistence of vision is the principle behind

            A)        Camera                   B)        Spectroscope

            C)        Cinema                   D)        Periscope

Answer: (C)

231.    Gobar gas mainly contains

            A)        Carbon dioxide                    

            B)        Carbon monoxide

            C)        Hydrogen sulphide

            D)        Methane

Answer: (D)

232.    The chief constituent of vinegar is

            A)        formic                                     B)        acetic acid

            C)        salicylic acid                         D)        oxalic acid

Answer: (B)

233.    The fibre least prone to catch fire is

            A)        Nylon                         B)        Polyester

            C)        Cotton                      D)        Terylene

Answer: (C)

234.    Setting of Plaster of Paris involves

            A)        dehydration process

            B)        hydration to form other hydrates

            C)        oxidation process

D)        reduction process

Answer: (B)

235.    The chemical name for the compound having formula NaOH is

            A)        Caustic soda         B)        Caustic potash

            C)        Soda ash               D)        Sodium hydroxide

Answer: (D)

236.    Helium gas is filled in balloons because

            A)        its atomic number is 2

B)        it is lighter than air

            C)        it is one of the constituents of water        

D)        it is a noble gas

Answer: (B)

237.    The percentage of pure gold in 18 carat gold is

            A)        100%                                      B)        80%

            C)        75%                                        D)        60%

Answer: (C)

238.    Zinc is not present in

            A)        brass                     B)        bronze

            C)        solder                    D)        german silver

Answer: (D)

239.    Dynamite was invented by

            A)        Edison                       B)        Fleming

            C)        Nobel                         D)        Bell

Answer: (C)

240.    Periodic Table was given by

            A)        Faraday               B)        Mendeleev

            C)        Arrhenius             D)        Lavoisier

Answer: (B)

241.    Gas Law  was given by

            A)        Boyle                        B)        Ostwald

            C)        Arrhenius                D)        Faraday

Answer: (A)

242.    Reduction is addition of

            A)        hydrogen                               B)        water

            C)        oxygen                                   D)        benzene

Answer: (A)

243.    The galvanized iron pipes are coated with

            A)        tin                                            B)        lead

            C)        copper                                    D)        zinc

Answer: (D)

244.    Which one of the following is a mixture?

            A)        Lime                                       B)        Table salt

            C)        Sugar                                     D)        Sea water

Answer: (C)

245.    Which one of the following is a Green House Gas?

            A)        Edison                                   B)        Fleming

            C)        Nobel                                     D)        Bell

Answer: (C)

246.    The tallest living tree is

            A)        Eucalyptus                            B)        Palm tree

            C)        Sequoia                                 D)        Tree fern

Answer: (C)

247.    The culture of silkworms is known as

            A)        Agriculture                            B)        Horticulture

            C)        Pisciculture                           D)        Sericulture

Answer: (D)

248.    The percentage of water content in the human blood plasma normally

            varies from

            A)        60-64                                      B)        70-75

            C)        80-82                                      D)        91-92

Answer: (D)

249.    The element which is rich in most leafy vegetable is

            A)        Phosphorus                          B)        Zinc

            C)        Iron                                         D)        Calcium

Answer: (C)

250.    Antibiotics can destroy viruses is

            A)        true                                         B)        false

            C)        partially true                          D)        partially wrong

Answer: (C)