TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 8

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Science-Part 8

176.    The huge amount of energy released in nuclear fission and fusion reactions is due to the conversion of

            A)        chemical energy into hear energy                       

B)        protons into neutrons

            C)        mass into energy, according to Einstein’s equation

D)        mechanical energy into heat energy

Answer: (C)

177.    Drinking soda is

            A)        neutral            B)        amphoteric

            C)        basic             D)        acidic

Answer: (D)

178.    Which of the following is found in kidney stone?

            A)        Ammonium oxalate                        

B)        Calcium oxalate

            C)        Potassium oxalate

D)        Sodium oxalate

Answer: (B)

179.    Which of the following is a laughing gas?

            A)        Carbon monoxide               

B)        Carbon dioxide

            C)        Nitrous oxide

D)        Sulphur dioxide

Answer: (C)

180.    Coding of zinc over iron article is known as

            A)        Galvanization            B)        Electroplating

            C)        Electro refining         D)        Etching

Answer: (A)

181.    Tincture of iodine is

            A)        Iodine

B)        Iodine and iodoform

            C)        Iodine and potassium iodide

D)        Iodoform

Answer: (C)

182.    The protein content is the order

            A)        soyabean > egg yolk > rice

B)        egg yolk > soyabean > rice

            C)        egg yolk > rice > soyabean

D)        soyabean > rice > egg yolk

Answer: (A)

183.    Which one of the following is correctly matched?

            A)        Liquid gold - Lead               

B)        Liquid silver - Mercury

            C)        Aquaregia - silver

D)        Green silver - Copper

Answer: (B)

184.    Which one of the following is correctly matched?

            A)        Charcoal - Inactive carbon                        

B)        Diamond - Conductor

            C)        Aquaregia - Silver

D)        Green silver - Copper

Answer: (D)

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

codes given below:

                        List I                             List II

            a)         Lead tetraethyl            1.  Global warming

b)         Liquid hydrogen           2.  Antiknocking agent

            c)         Hydrogen peroxide      3.  Rocket fuel

d)         Carbon dioxide            4.  Bleact ing agent

Codes:

                        a          b          c          d

            A)        2          1          3          4

            B)        1          3          2          4

            C)        2          4          3          1

            D)        2          3          4          1

Answer: (D)

186.    Consider the following statements:

Assertion  (A)   :   Silver articles on exposure to air become black

            Reason (R)        :    Silver is oxidized to silver oxide

            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)

187.    Which of the following is the chief component of fungal cell wall?

            A)        Mucopolysaccharide                                  

B)        Cellulose

            C)        a - D - glucopyranose

D)        None of these

Answer: (D)

188.    Which of the following is correctly matched?

            A)        Maltose                      -  Disaccharides                              

B)        Fructose                    -  Hexose sugar

            C)        Cellulose                   -  Structural

D)        All of these                -  polysaccharide

Answer: (D)

189.    Natural lipids are readily soluble in

            A)        Oil                               B)        Water

            C)        Mercury                      D)        None of these

Answer: (D)

190.    The number of ATP molecules yielded from 2NADH₂ molecule is

            A)        3                                              B)        4

            C)        6                                              D)        12

Answer: (C)

191.    Consider the following statements:

Assertion  (A) :   Nitrogen plays an important role in growth,  metabolism, heredity and respiration

            Reason (R)       :           It suppressed formation of flowers

            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: (C)

192.    Consider the following statements:

Assertion  (A)   :  The primary physiological effects of auxin in plants is to stimulate the ‘elongatin of cells shoots

 Reason (R)     :   Dormancy of buds can be broken by auxin treatment.

            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)

193.    Consider the following statements:

Assertion  (A)    :  Green vegetable soyabean oil, tomatoes etc, are chief source of Vitamin K.

Reason (R)  :   Vitamin K prevents erosion of the skin in higher animals.

            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: (C)

194.    The cell responsible for fixing atmospheric nitrogen in blue green algae is

            A)        Akinetes                      B)        Heterocysts

            C)        Aplanospores             D)        Parthenospores

Answer: (B)

195.    The synthesis of glucose form fat is called

            A)        Glycolysis                              B)        T.C.A.

            C)        Gluconeogenesis                D)        Saponification

Answer: (C)

196.    Which one of the following is NOT correctly matched?

            A)        Vitamin ‘A’                 -           Fat soluble                           

B)        Vitamin ‘B’                 -           Water soluble

            C)        Vitamin ‘C’                -           Water soluble

D)        Vitamin ‘D’                -           Water soluble

Answer: (D)

197.    Pituitary gland is situated in

            A)        the neck                         B)        the base of the heart

            C)        the base of the brain    D)        the abdomen

Answer: (C)

198.    Red colour to the blood is given by

            A)        Haemoglobin                        B)        Albumin

            C)        Gamma globulin                  D)        Myoglobin

Answer: (A)

199.    Sexual characters in female are controlled by

            A)        Progesterone                        B)        Estrogen

            C)        Testosterone                         D)        Aldosterone

Answer: (B)

200.    A cross between hybrid and either of any parent (dominant or recessive)

is called

            A)        Monohybrid cross                B)        Back cross

            C)        Test cross                              D)        Dihybrid cross

Answer: (B)