RRB NTPC - General science covering physics chemistry and biology up to tenth standard level Online Test (MCQ Quiz)

1. What is the SI unit of force?

A) Joule B) Watt C) Newton D) Pascal

2. Which gas is commonly known as laughing gas?

A) Carbon Dioxide B) Nitrogen Dioxide C) Nitrous Oxide D) Sulfur Dioxide

3. What is the powerhouse of the cell?

A) Nucleus B) Ribosome C) Endoplasmic Reticulum D) Mitochondrion

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

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

5. What is the chemical formula for common salt?

A) H2O B) CO2 C) NaCl D) KCl

6. Which part of the plant is responsible for photosynthesis?

A) Root B) Stem C) Leaf D) Flower

7. What is the boiling point of water at standard atmospheric pressure?

A) 0 degrees Celsius B) 50 degrees Celsius C) 100 degrees Celsius D) 212 degrees Celsius

8. Which element has the symbol 'Fe'?

A) Fluorine B) Iron C) Phosphorus D) Silver

9. What is the process by which plants make their own food called?

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

10. Which force keeps us grounded on Earth?

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

11. What is the main component of air?

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

12. Which organ in the human body is responsible for pumping blood?

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

13. What is the SI unit of energy?

A) Watt B) Newton C) Joule D) Volt

14. Which type of rock is formed from molten lava?

A) Sedimentary B) Metamorphic C) Igneous D) Fossiliferous

15. What is the process of conversion of water vapor into liquid water called?

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

16. Which gas is produced during the respiration of plants?

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

17. What is the unit of electric current?

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

18. Which of the following is an example of a renewable energy source?

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

19. What is the hardest natural substance on Earth?

A) Gold B) Iron C) Diamond D) Quartz

20. Which disease is caused by a deficiency of Vitamin C?

A) Rickets B) Night Blindness C) Anemia D) Scurvy

21. What is the phenomenon of light bending as it passes from one medium to another called?

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

22. Which gas is used in balloons for its lightness?

A) Oxygen B) Nitrogen C) Helium D) Hydrogen

23. What is the basic unit of heredity?

A) Cell B) Gene C) Chromosome D) DNA

24. Which metal is liquid at room temperature?

A) Iron B) Aluminum C) Mercury D) Copper

25. What is the process by which a solid changes directly into a gas?

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

26. Which hormone regulates blood sugar levels?

A) Thyroxine B) Adrenaline C) Insulin D) Estrogen

27. What is the SI unit of pressure?

A) Newton B) Joule C) Pascal D) Watt

28. Which planet is known as the 'Morning Star' or 'Evening Star'?

A) Mars B) Venus C) Jupiter D) Saturn

29. What is the chemical formula for sulfuric acid?

A) HCl B) HNO3 C) H2SO4 D) H3PO4

30. Which part of the human eye controls the amount of light entering?

A) Retina B) Pupil C) Iris D) Lens

31. What is the phenomenon of scattering of light by particles in the atmosphere called?

A) Interference B) Diffraction C) Tyndall Effect D) Polarization

32. Which gas is responsible for the greenhouse effect?

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

33. What is the unit of electric resistance?

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

34. Which of the following is a disease of the blood?

A) Jaundice B) Diabetes C) Leukemia D) Malaria

35. What is the process of digestion of food in humans?

A) Mechanical and Chemical B) Only Mechanical C) Only Chemical D) Absorption

36. Which instrument is used to measure atmospheric pressure?

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

37. What is the chemical symbol for gold?

A) Ag B) Au C) Fe D) Cu

38. Which type of microorganism causes malaria?

A) Bacteria B) Virus C) Fungus D) Protozoa

39. What is the change in direction of a wave when it encounters a barrier called?

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

40. Which gas is produced by the decomposition of organic matter?

A) Methane B) Ammonia C) Hydrogen Sulfide D) Carbon Monoxide

41. What is the SI unit of power?

A) Joule B) Watt C) Newton D) Volt

42. Which vitamin is essential for blood clotting?

A) Vitamin A B) Vitamin B C) Vitamin C D) Vitamin K

43. What is the process of separation of components of a mixture by selective dissolving called?

A) Distillation B) Filtration C) Decantation D) Solvent Extraction

44. Which part of the plant absorbs water and minerals from the soil?

A) Leaf B) Flower C) Root D) Stem

45. What is the unit of frequency?

A) Hertz B) Decibel C) Newton D) Pascal

46. Which metal is used in the filament of an electric bulb?

A) Copper B) Aluminum C) Tungsten D) Iron

47. What is the chemical formula for carbon dioxide?

A) CO B) C2O C) CO2 D) CO3

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

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

49. What is the main function of red blood cells?

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

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

A) Gravitational Force B) Magnetic Force C) Frictional Force D) Normal Force

General science covering physics chemistry and biology up to tenth standard level - Online Test

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