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

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

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

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

D. Energy is directly proportional to mass and velocity.

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

A. Oxygen

B. Nitrogen

C. Carbon dioxide

D. Helium

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

A. Digestion

B. Respiration

C. Photosynthesis

D. Fermentation

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4. What is the SI unit of power?

A. Watt

B. Newton

C. Ohm

D. Joule

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

A. Regulation of body temperature

B. Processing sensory information

C. Transmitting signals between different parts of the body

D. Controlling voluntary movements

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

A. Vaporization

B. Condensation

C. Sublimation

D. Evaporation

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7. The SI unit of electric charge is:

A. Coulomb

B. Volt

C. Ohm

D. Ampere

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8. Which of the following elements is a halogen?

A. Calcium

B. Iron

C. Chlorine

D. Sodium

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9. The chemical symbol for silver is:

A. Si

B. Au

C. Ag

D. Sn

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

A. Carrying nerve impulses

B. Transportation of oxygen

C. Blood clotting

D. Fighting infections

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11. Which of the following is a noble gas?

A. Hydrogen

B. Nitrogen

C. Helium

D. Oxygen

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

A. Newton

B. Volt

C. Joule

D. Watt

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13. What is the chemical symbol for potassium?

A. Pt

B. K

C. P

D. Pb

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

A. Support and protection of internal organs

B. Regulation of body temperature

C. Production of blood cells

D. Facilitation of movement

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15. What is the SI unit of frequency?

A. Ohm

B. Meter

C. Hertz

D. Pascal

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

A. Artery

B. Vein

C. Capillary

D. Nephron

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

A. Mass

B. Velocity

C. Energy

D. Temperature

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

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

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

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

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

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

A. 5.6 m/s^2

B. 9.8 m/s^2

C. 6.2 m/s^2

D. 12.4 m/s^2

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

A. Golgi apparatus

B. Nucleus

C. Ribosome

D. Mitochondrion

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

A. Regulating body temperature

B. Exchanging gases between the body and the environment

C. Digesting food and absorbing nutrients

D. Pumping blood throughout the body

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22. What is the chemical formula for table salt?

A. NaOH

B. NaCl

C. HCl

D. H2SO4

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

A. Cerebellum

B. Cerebrum

C. Hypothalamus

D. Medulla oblongata

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

A. Helium

B. Neon

C. Nitrogen

D. Argon

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

A. Stomach

B. Small intestine

C. Kidney

D. Liver

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

A. Liver

B. Heart

C. Brain

D. Skin

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

A. Voltage

B. Resistance

C. Temperature

D. Capacitance

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28. What is the chemical formula for water?

CO₂

H₂O₂

CH₄

H₂O

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

A. Diffraction

B. Interference

C. Refraction

D. Reflection

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

A. Melting ice

B. Rusting iron

C. Boiling water

D. Cutting paper

Your score is

The average score is 28%

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