300 Science MCQ Questions in english

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300 Science MCQ Questions in english हिन्दी

Read science multiple choice questions for the various types of competitive exams. These science questions will help students to prepare for their exams. Improve your Science subject knowledge by reading these science questions.

20. What ingredient(s) is(are) utilised in pencils?

A. Charcoal

B. Silicon

C. Phosphorous

D. Graphite

19. Which of the following metals combines with other metals to produce an amalgam?

A. Mercury

B. Tin

C. Zinc

D. Lead

18. Water's chemical formula is

A. NaA1O2

B. Al2O3

C. CaSiO3

D. H2O

17. Typically, the gas in an electric bulb is

A. Hydrogen

B. Carbon dioxide

C. Nitrogen

D. Oxygen

16. The generic term for washing soda is

A. Calcium Bicarbonate

B. Sodium Carbonate

C. Calcium Carbonate

D. Sodium Bicarbonate

15. The filament used in electric light bulbs is made up of

A. Copper

B. Aluminium

C. Lead

D. Tungsten

14. The name of the tree that roots from its branches into the ground is:

A. Oak

B. Pine

C. Banyan

D. Palm

13. Which of the following gases causes brass to tarnish in the presence of air?

A. Carbon dioxide

B. Hydrogen Sulphide

C. Oxygen

D. Nitrogen

12. Which of the following is a liquid non-metal at normal temperature?

A. Bromine

B. Chlorine

C. Phosphorous

D. Helium

11. A naturally occurring chelate complex with a core metal is called chlorophyll?

A. Iron

B. Copper

C. Magnesium

D. Calcium

10. Which of the following influences an electrolytic solution's electrical conductance?

A. size of the ions produced and their solvation

B. the nature of the solvent and its viscosity

C. the nature of the electrolyte added

D. all of the above

9. What connection exists between the sound speed and gas pressure when the temperature is constant?

A. inversely proportional to each other

B. independent of each other

C. directly proportional to each other

D. none of the above

8. Which of the following scenarios allows for the observation of the weightless state?

A. When bodies are at null points in outer space

B. When objects fall freely under gravity

C. When a satellite revolves in its orbit around the earth

D. All of the above

7. Which of these exhibits linear momentum conservation?

A. Explosion of bomb

B. Fight of rockets and jet planes

C. Recoiling of a gun

D. All of the above

6. What one of the following is a vegetable with stems?

A. Carrot

B. Lettuce

C. Asparagus

D. Onion

5. When soaked in water, chickpeas can expand up to three times their original size. This phenomena is referred to as?

A. Osmosis

B. Reverse Osmosis

C. Diffusion

D. Imbibition

4. Which of the following facts about a pendulum in motion is true when it is at the bottom (middle of the arc)?

A. It has zero kinetic energy

B. It has zero total energy

C. It has maximum kinetic energy and minimum potential energy

D. It has maximum potential energy and minimum kinetic energy

3. The "Escherichia coli" bacteria are mostly found in

A. Pteridophytes

B. Root Nodules of leguminous plants

C. Paddy fields for nitrogen fixation

D. Human Intestine

2. Which of the following cereals has the disease "Karnal bunt"?

A. Pulses

B. Wheat

C. Maize

D. Rice

1. What one of the following is referred to as quick lime?

A. CaO

B. CaCl2

C. CaCO2

D. Ca(OH)

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