SSC CGL - Physics, Chemistry and Biology Online Test (MCQ Quiz)

1. What is the SI unit of force?

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

2. Which of the following is a scalar quantity?

A) Velocity B) Acceleration C) Speed D) Force

3. What is the unit of power?

A) Joule per second B) Newton meter C) Ampere volt D) Kilogram meter per second

4. According to Newton's first law of motion, an object will continue to do what unless acted upon by an external force?

A) Change its velocity B) Remain at rest or in uniform motion C) Accelerate at a constant rate D) Decrease its momentum

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

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

6. Which type of mirror is used in a periscope to reverse the image?

A) Concave mirror B) Convex mirror C) Plane mirror D) Parabolic mirror

7. What is the chemical symbol for gold?

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

8. Which gas is most abundant in the Earth's atmosphere?

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

9. What is the pH of pure water?

A) 0 B) 7 C) 14 D) 1

10. Which of the following is a noble gas?

A) Oxygen B) Neon C) Chlorine D) Hydrogen

11. What is the basic unit of life?

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

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

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

13. What is the powerhouse of the cell?

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

14. Which blood component is responsible for carrying oxygen?

A) Plasma B) White blood cells C) Platelets D) Red blood cells

15. What is the process by which plants release water vapor into the atmosphere?

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

16. What is the SI unit of electric current?

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

17. Which law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature remain the same?

A) Newton's Law B) Ohm's Law C) Archimedes' Principle D) Boyle's Law

18. What is the property of a substance to resist changes to its state of motion called?

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

19. What is the unit of energy?

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

20. Which phenomenon causes the blue color of the sky?

A) Absorption of light B) Scattering of light C) Reflection of light D) Refraction of light

21. What is the chemical symbol for iron?

A) Ir B) In C) Fe D) Io

22. Which element is known as the 'King of Chemicals'?

A) Sodium Hydroxide B) Sulfuric Acid C) Hydrochloric Acid D) Nitric Acid

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

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

24. Which of the following is an example of a base?

A) Vinegar B) Lemon Juice C) Soap D) Milk

25. What is the primary function of red blood cells?

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

26. Which vitamin is essential for blood clotting?

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

27. What is the scientific study of living organisms called?

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

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

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

29. What is the process by which organisms grow and repair themselves?

A) Digestion B) Excretion C) Reproduction D) Cellular respiration

30. What is the SI unit of frequency?

A) Hertz B) Decibel C) Watt D) Radian

31. Which lens is used to correct myopia (nearsightedness)?

A) Convex lens B) Concave lens C) Cylindrical lens D) Bifocal lens

32. What is the tendency of an object to remain in its state of rest or uniform motion called?

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

33. What is the unit of pressure?

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

34. What is the chemical symbol for silver?

A) Si B) Sn C) Ag D) Au

35. Which of the following is a non-metal that is liquid at room temperature?

A) Mercury B) Bromine C) Iodine D) Chlorine

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

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

37. What is the primary gas that causes the greenhouse effect?

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

38. Which type of cells are responsible for immunity in the human body?

A) Red blood cells B) Platelets C) White blood cells D) Nerve cells

39. What is the main component of bones?

A) Calcium Carbonate B) Calcium Phosphate C) Potassium Chloride D) Sodium Bicarbonate

40. Which hormone regulates blood sugar levels?

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

41. What is the SI unit of magnetic flux density?

A) Weber B) Tesla C) Gauss D) Farad

42. What is the unit of angular velocity?

A) Meters per second B) Radians per second C) Degrees per second D) Revolutions per minute

43. What is the mass per unit volume of a substance called?

A) Density B) Viscosity C) Porosity D) Concentration

44. Which of the following is an alloy of copper and zinc?

A) Bronze B) Brass C) Steel D) Solder

45. What is the process of adding impurities to a semiconductor to increase its conductivity called?

A) Filtration B) Diffusion C) Doping D) Oxidation

46. What is the chemical formula for common salt?

A) KCl B) NaCl C) CaCl2 D) MgBr2

47. Which gas is produced during photosynthesis?

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

48. What is the process of breaking down food into simpler substances that can be absorbed by the body called?

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

49. Which is the largest organ in the human body?

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

50. What is the unit of radioactive decay?

A) Gray B) Sievert C) Becquerel D) Curie

Physics, Chemistry and Biology - Online Test

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