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Looking for MCQs? You're in the right place! Whether you're preparing for competitive exams, school boards or just aiming to improve your knowledge, we offer MCQs for all levels and subjects.
Answer: Hydrogen bond
Hydrogen bonds hold the two complementary strands of DNA together in its double helix structure.
Answer: Combustion
Combustion is an exothermic reaction, releasing energy in the form of heat and light.
Answer: Carry oxygen
Red blood cells contain hemoglobin, which helps transport oxygen throughout the body.
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Answer: Solar energy
Solar energy is a renewable energy source, harnessing the suns rays to generate electricity.
Answer: Hydrological cycle
The water cycle, or hydrological cycle, describes the movement of water through evaporation, condensation and precipitation.
Answer: Basalt
Basalt is the most common type of rock on Earth, forming the oceanic crust.
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Answer: Argon
Argon is a noble gas and is chemically inert due to its full outer electron shell.
Answer: Mercury
Mercury is the closest planet to the Sun, with a very short orbit around it.
Answer: Catalyst
A catalyst speeds up a chemical reaction without being consumed in the process.
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Answer: Carbon dioxide
Carbon dioxide is a major greenhouse gas that traps heat in Earths atmosphere, contributing to global warming.
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