Science MCQs for CTET Exam

Which of the following is not a renewable source of energy?

• Solar energy

• Wind energy

• Coal

• Hydroelectric energy

The process of converting solid directly into gas without passing through the liquid state is called:

• Condensation

• Sublimation

• Evaporation

• Freezing

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

• Melting of ice

• Rusting of iron

• Boiling of water

• Dissolving sugar in water

The primary function of chlorophyll in plants is:

• Water absorption

• Photosynthesis

• Respiration

• Germination

Which gas is released during photosynthesis?

• Carbon dioxide

• Oxygen

• Nitrogen

• Hydrogen

Which part of the human digestive system is primarily responsible for nutrient absorption?

• Stomach

• Small intestine

• Large intestine

• Esophagus

The hardest natural substance on Earth is:

• Graphite

• Diamond

• Iron

• Silicon

The energy derived from the Earth's internal heat is called:

• Geothermal energy

• Solar energy

• Wind energy

• Nuclear energy

Which of the following is a synthetic fiber?

• Cotton

• Silk

• Wool

• Nylon

Which blood group is known as the universal donor?

• A

• B

• AB

• O