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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: Au
Gold has the chemical symbol Au, derived from the Latin word aurum.
Answer: Wood burning
Wood burning is a chemical reaction in which new substances, such as ash and gases, are formed.
Answer: Transpiration
Transpiration is the process by which water vapor is lost from the leaves of plants to the atmosphere.
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Answer: 7
Pure water has a neutral pH value of 7, meaning it is neither acidic nor basic.
Answer: Transport oxygen
Red blood cells transport oxygen from the lungs to body tissues and carry carbon dioxide back to the lungs for exhalation.
Answer: Carbon dioxide
Carbon dioxide is a major greenhouse gas, contributing to the trapping of heat in the Earths atmosphere, leading to global warming.
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Answer: O2
Oxygen gas exists as a molecule composed of two oxygen atoms, represented by the formula O2.
Answer: Lever
A lever is a simple machine that uses a rigid bar to pivot around a fulcrum to lift or move objects.
Answer: Covalent bond
In a covalent bond, electrons are shared between two atoms, creating a stable connection.
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Answer: Carry oxygen
The circulatory system is responsible for transporting oxygen and nutrients to body cells and carrying away waste products.
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