TRB PG Assistant - Everyday science - basic scientific concepts relevant to daily life Online Test (MCQ Quiz)

1. What is the primary gas that makes up the Earth's atmosphere?

A) Oxygen B) Nitrogen C) Carbon Dioxide D) Argon

2. Which phenomenon causes the sky to appear blue during the day?

A) Reflection of sunlight by clouds B) Scattering of sunlight by atmospheric particles C) Absorption of light by ozone layer D) Refraction of sunlight through water vapor

3. What is the process by which plants make their own food using sunlight?

A) Respiration B) Transpiration C) Photosynthesis D) Fermentation

4. What is the basic unit of all living organisms?

A) Tissue B) Organ C) Cell D) Molecule

5. Which force keeps us grounded on Earth and causes objects to fall?

A) Magnetism B) Friction C) Inertia D) Gravity

6. What is the process of water turning from a liquid to a gas (vapor)?

A) Condensation B) Freezing C) Evaporation D) Sublimation

7. Which part of the human body is responsible for pumping blood?

A) Lungs B) Brain C) Heart D) Liver

8. What is the main source of energy for Earth?

A) Moon B) Stars C) Sun D) Geothermal heat

9. Which type of energy is stored in food?

A) Kinetic energy B) Thermal energy C) Chemical energy D) Electrical energy

10. What is the common name for a sudden, rapid release of energy in the Earth's crust that causes shaking?

A) Volcano B) Tsunami C) Earthquake D) Landslide

11. What is the process by which solid changes directly into gas without becoming liquid?

A) Melting B) Vaporization C) Sublimation D) Condensation

12. Which gas do humans exhale during respiration?

A) Oxygen B) Nitrogen C) Carbon Dioxide D) Hydrogen

13. What is the primary function of red blood cells in the human body?

A) Fighting infection B) Clotting blood C) Carrying oxygen D) Producing antibodies

14. What is the term for the change of state from gas to liquid?

A) Evaporation B) Boiling C) Condensation D) Freezing

15. Which of the following is a good conductor of electricity?

A) Rubber B) Plastic C) Copper D) Wood

16. What is the property of matter that resists changes in its state of motion?

A) Velocity B) Acceleration C) Momentum D) Inertia

17. What is the process of breaking down food into simpler substances that the body can absorb?

A) Digestion B) Circulation C) Assimilation D) Excretion

18. Which sound phenomenon occurs when a wave bounces off a surface?

A) Refraction B) Diffraction C) Reflection D) Interference

19. What is the unit of measurement for electric current?

A) Volt B) Ohm C) Ampere D) Watt

20. Which gas is essential for combustion (burning)?

A) Nitrogen B) Carbon Dioxide C) Oxygen D) Helium

21. What is the process where plants release water vapor into the atmosphere?

A) Photosynthesis B) Respiration C) Transpiration D) Absorption

22. What is the term for the bending of light as it passes from one medium to another?

A) Reflection B) Diffraction C) Refraction D) Dispersion

23. Which force opposes motion between two surfaces in contact?

A) Tension B) Gravity C) Friction D) Buoyancy

24. What is the main function of the kidneys in the human body?

A) Pumping blood B) Filtering waste from blood C) Producing hormones D) Digesting food

25. What is the scientific term for the sensation of heat or cold?

A) Pressure B) Temperature C) Density D) Volume

26. Which type of energy is associated with the movement of objects?

A) Potential energy B) Chemical energy C) Kinetic energy D) Nuclear energy

27. What is the process of a liquid turning into a solid?

A) Melting B) Boiling C) Freezing D) Evaporation

28. What is the primary gas that plants absorb from the atmosphere for photosynthesis?

A) Oxygen B) Nitrogen C) Carbon Dioxide D) Water vapor

29. Which part of a plant is responsible for absorbing water and nutrients from the soil?

A) Stem B) Leaves C) Roots D) Flower

30. What is the term for a substance that speeds up a chemical reaction without being consumed itself?

A) Inhibitor B) Catalyst C) Enzyme D) Solvent

31. What is the unit of electrical resistance?

A) Ampere B) Volt C) Watt D) Ohm

32. Which type of wave is used in microwave ovens?

A) Sound waves B) Radio waves C) Microwaves D) X-rays

33. What is the process of water vapor turning back into liquid water?

A) Evaporation B) Boiling C) Condensation D) Precipitation

34. What is the common name for the solid state of water?

A) Steam B) Water vapor C) Ice D) Dew

35. Which of the following is a renewable source of energy?

A) Coal B) Natural Gas C) Solar Power D) Petroleum

36. What is the force that causes a ship to float on water?

A) Gravity B) Friction C) Buoyancy D) Surface tension

37. What is the primary component of natural gas?

A) Ethane B) Propane C) Methane D) Butane

38. Which organ is responsible for producing bile?

A) Stomach B) Pancreas C) Gallbladder D) Liver

39. What is the term for the measure of how much space an object occupies?

A) Mass B) Density C) Volume D) Weight

40. What is the phenomenon where light splits into its constituent colors?

A) Refraction B) Reflection C) Diffraction D) Dispersion

41. Which gas is produced in large quantities during the burning of fossil fuels and contributes to global warming?

A) Nitrogen B) Oxygen C) Methane D) Carbon Dioxide

42. What is the process of sound waves bouncing off a surface and returning?

A) Absorption B) Amplification C) Echo D) Reverberation

43. What is the primary function of white blood cells?

A) Transporting oxygen B) Clotting blood C) Fighting infections D) Carrying nutrients

44. Which of the following is an example of a chemical change?

A) Melting ice B) Boiling water C) Burning wood D) Dissolving sugar in water

45. What is the study of the Earth's structure and substance?

A) Astronomy B) Geology C) Meteorology D) Biology

46. What is the term for the energy an object possesses due to its position or state?

A) Kinetic energy B) Thermal energy C) Chemical energy D) Potential energy

47. Which gas is produced by plants during photosynthesis and is vital for animal life?

A) Carbon Dioxide B) Nitrogen C) Oxygen D) Hydrogen

48. What is the process by which water vapor in the air turns into liquid water, forming clouds?

A) Evaporation B) Sublimation C) Condensation D) Precipitation

49. What is the scientific term for the hard, protective outer layer of an animal or plant structure?

A) Membrane B) Epidermis C) Exoskeleton D) Cell wall

50. Which device is used to measure atmospheric pressure?

A) Thermometer B) Hygrometer C) Barometer D) Anemometer

Everyday science - basic scientific concepts relevant to daily life - Online Test

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