Mock Test – SEBA Class 12 Science (Physics, Chemistry and Biology) - CollegeXpad Navigating your Educational Journey

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Mock Test For SEBA Class 12 Students (Science)

Here's a Mock Test for Class12 Students.

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1 / 30

1. What is the primary function of the respiratory system?

A. Exchanging gases between the body and the environment

B. Digesting food and absorbing nutrients

C. Pumping blood throughout the body

D. Regulating body temperature

2 / 30

2. The SI unit of electric charge is:

A. Volt

B. Ohm

C. Ampere

D. Coulomb

3 / 30

3. What is the process by which a liquid changes into a gas at its boiling point?

A. Sublimation

B. Condensation

C. Evaporation

D. Vaporization

4 / 30

4. Which of the following is NOT a part of the human digestive system?

A. Stomach

B. Small intestine

C. Liver

D. Kidney

5 / 30

5. Which of the following is NOT a function of the skeletal system?

A. Production of blood cells

B. Facilitation of movement

C. Support and protection of internal organs

D. Regulation of body temperature

6 / 30

6. The chemical symbol for silver is:

A. Au

B. Sn

C. Si

D. Ag

7 / 30

7. Which of the following elements is a halogen?

A. Chlorine

B. Iron

C. Calcium

D. Sodium

8 / 30

8. What is the largest organ in the human body?

A. Brain

B. Liver

C. Heart

D. Skin

9 / 30

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

A. Boiling water

B. Rusting iron

C. Melting ice

D. Cutting paper

10 / 30

10. What is the chemical formula for water?

CO₂

H₂O₂

H₂O

CH₄

11 / 30

11. What is the phenomenon where a wave changes direction upon entering a different medium?

A. Diffraction

B. Interference

C. Reflection

D. Refraction

12 / 30

12. Which of the following best describes the law of conservation of energy?

A. Energy cannot be created nor destroyed, only transferred or transformed from one form to another.

B. Energy always flows from a region of higher concentration to a region of lower concentration.

C. The total energy of a closed system remains constant over time.

D. Energy is directly proportional to mass and velocity.

13 / 30

13. What is the SI unit of power?

A. Watt

B. Joule

C. Newton

D. Ohm

14 / 30

14. What is the SI unit of frequency?

A. Meter

B. Pascal

C. Hertz

D. Ohm

15 / 30

15. Which part of the human brain is responsible for regulating balance and coordination?

A. Hypothalamus

B. Cerebellum

C. Medulla oblongata

D. Cerebrum

16 / 30

16. What is the chemical formula for table salt?

A. H2SO4

B. NaCl

C. NaOH

D. HCl

17 / 30

17. Which of the following is not a noble gas?

A. Argon

B. Nitrogen

C. Helium

D. Neon

18 / 30

18. Which of the following is a unit of measurement for force?

A. Volt

B. Joule

C. Newton

D. Watt

19 / 30

19. Which of the following statements about Newton's First Law of Motion is correct?

A. The velocity of an object remains constant unless acted upon by a net external force.

B. For every action, there is an equal and opposite reaction.

C. The acceleration of an object is directly proportional to the net external force acting on it.

D. An object at rest tends to remain at rest unless acted upon by a net external force.

20 / 30

20. The process by which plants make their food using sunlight is called:

A. Digestion

B. Respiration

C. Fermentation

D. Photosynthesis

21 / 30

21. The acceleration due to gravity near the surface of the Earth is approximately:

A. 9.8 m/s^2

B. 12.4 m/s^2

C. 5.6 m/s^2

D. 6.2 m/s^2

22 / 30

22. Which of the following is an example of a vector quantity?

A. Energy

B. Velocity

C. Temperature

D. Mass

23 / 30

23. According to Ohm's Law, the current passing through a conductor is directly proportional to:

A. Capacitance

B. Temperature

C. Resistance

D. Voltage

24 / 30

24. What is the chemical symbol for potassium?

A. P

B. K

C. Pt

D. Pb

25 / 30

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

A. Transportation of oxygen

B. Fighting infections

C. Carrying nerve impulses

D. Blood clotting

26 / 30

26. Which organelle is known as the powerhouse of the cell?

A. Nucleus

B. Ribosome

C. Mitochondrion

D. Golgi apparatus

27 / 30

27. Which of the following is NOT a function of the nervous system?

A. Controlling voluntary movements

B. Processing sensory information

C. Transmitting signals between different parts of the body

D. Regulation of body temperature

28 / 30

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

A. Nitrogen

B. Helium

C. Carbon dioxide

D. Oxygen

29 / 30

29. Which of the following is a noble gas?

A. Oxygen

B. Hydrogen

C. Nitrogen

D. Helium

30 / 30

30. Which of the following is NOT a type of blood vessel?

A. Capillary

B. Nephron

C. Vein

D. Artery

Your score is

The average score is 28%

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