TNPSC Exam-GROUP-II - Subject wise analysed questions and Answers- Science-Part 7

TNPSC Exam-GROUP – II - Subject wise analysed questions and Answers- Science-Part 7

 

151.    Pick out the wrong statement from the following:

            A)        Heat can be reflected by a mirror

            B)        Heat can be converted into work

            C)        Heat rays cannot pass through vacuum

            D)        Heat is a form of energy.

            Ans : (A)

152.    Milk inside a thermos flask is stirred vigorously by shaking.

            A)        Its  temperature would further increase.                         

            B)        Its temperature would fall slightly

            C)        Its temperature does not change

            D)        Its temperature first increase and than decreases

            Ans : (C)

153.    Which of the following has the highest electrical conductivity?

            A)        Zn                                           B)        Fe

            C)        Ag                                           D)        Cu

            Ans : (C)

154.    The pyrolusite ore contains

            A)        Fe                                           B)        Al

            C)        Mn                                          D)        Cu

            Ans : (C)

155.    When an acidified solution of ferrous ammonium sulphate is treated with       KMnO₄ solution, the ion which is oxidised is

            A)        Fe²⁺                                        B)        So₄^2-              

            C)        NH₄⁺                                        D)        MnO₄

            Ans : (A)

156.    Which of the following is nuturally occuring polymer?

             A)       Polyethylene                                    B)        PVC

            C)        Acetic acid                             D)        Protein

            Ans : (D)

157.    According to Arrhenius concept, base is a substance which

            A)        gives a pair of protons                    

            B)        donates protons

            C)        accepts a lone pair of electrons

            D)        donates hydroxyl ions

            Ans : (C)

158.    Distinction between plant and animal cells lies in

            A)        growth                                   

            B)        movement

            C)        nutrition

            D)        respiration

            Ans : (D)

159.    The powerhouse of the cell is

            A)        Mitochondria            

            B)        Golgi complex

            C)        Endoplasmic Reticulum

            D)        Chloroplast

            Ans : (A)

160.    Which part of the Cauliflower is used as vegetable?

            A)        Leaves                      

            B)        Flower

            C)        Stem

            D)        Inflorescence

            Ans : (D)

161.    Which of the following is not found in plants?

            A)        Vitamin E                              

            B)        Vitamin B₁₂

            C)        Vitamin B₆

            D)        Vitamin B₅

            Ans : (B)

162.    The sex of a  child is determined by

            A)        X- chromosome

            B)        Y - chromosome

            C)        Z - chromosome

            D)        O - chromosome

            Ans : (B)

163.    In mammals, disphragm is concerned with

            A)        nervous system

            B)        excretory system

            C)        respiratory system

            D)        circulation system

            Ans : (C)

164.    When the egg contains no yolk, it called

            A)        Microlecithal

            B)        Alecithal

            C)        Isolecithal

            D)        Telolecithal

            Ans : (B)

165.    In cell cycle, which phase starts immediately after the last cell division?

            A)        S-phase

            B)        G₂- phase

            C)        G₁ - phase

            D)        Interphase

            Ans : (C)

166.    Conn's disease is

            A)        Hyperaldosteronism

            B)        Adrenogential syndrome

            C)        Adrenal virilism

            D)        Paraxysmal hypertension

            Ans : (B)