Science Quiz Based on NCERT for SSC CPO 2016

1.The penetrating power is maximum in —

A.α-rays

B.β-rays

C.γ-rays 

D.cathode rays

2.Which of the following rays carry no charge?

A.Cathode rays

B.X-rays

C.a-rays

D.Positive rays

3.An atom bomb is based on the principle of —

A.Chemical reaction

B.Chain reaction in the form of fission

C.Nuclear fusion

D.None

4.A plant cell differs from an animal cell in the absence of —

A.mitochondria

B.centrioles

C.ribosomes

D.endoplasmic reticulum

5.Most commercial nuclear power plants worldwide are cooled by 

A.sodium

B.mercury

C.helium

D.water

6.Photo-synthesis is a/ an —

A.exothermic process

B.endothermic process

C.a neutral process

D.a thermostatic process

7.Which of the following is a physical change?

A.oxidation

B.reduction

C.sublimation

D.decomposition

8.Which of the following is not a chemical reaction?

A.Burning of paper

B.Digestion of food

C.Conversion of water into steam

D.Burning of coal

9.Which of the following is a chemical change?

A.Rusting of iron

B.Tempering of iron

C.Melting of iron

D.Bending of iron

10.Photoelectric effect was discovered by —

A.Einstein

B.Hertz

C.Bohr

D.Plank

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