UPSC NCERT SCIENCE and TECHNOLOGY NOTES: TOPIC WISE SOLVED MCQ’s

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1. Cell theory is given by –

1.Schleiden                            2. Pasture                              3. T Schwan                           4. Robert Hooke

a) Only 1                                b) 1 and 3                              c) 2 and 4                               d) 2 and 3

Ans: B

2. A plant cell differs from animal cell in having which of the following?

a) Cell wall                             b) Chloroplast                       c) Nucleus                               d) Cell membrane

Ans:    A

3. The Chromosomes are made up of:

a) RNA                                   b) Protein                              c) DNA and Protein                 d) DNA

Ans:    C

4. The chemical name of “Plaster of Paris” is

a) Calcium Sulphate Hydrate

b) None of these

c) Calcium Chloride

d) Calcium Nitrate

Ans:    A

5. Which of the following is a non-metal found in the liquid state?

a) Nitrogen                               b) Chlorine                      c) Fluorine                   d) Bromine

Ans:     D

6. Satellite having the same orbital period as the period of rotation of the Earth about its own axis is known as _____.

a) Geostationary satellite

b) INSAT

c) Polar satellite

d) Stationary satellite

Ans:     A

7. Which of the following is the working principle of a Washing Machine?

a) Reverse osmosis

b) Dialysis

c) Centrifugation

d) Diffusion

Ans:    C