Place for ads
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: Chlorofluorocarbons (CFCs)
Chlorofluorocarbons (CFCs) break down ozone molecules in the stratosphere, leading to ozone layer depletion.
Answer: Skin
The skin is the largest organ of the human body, covering and protecting internal organs and regulating temperature.
Answer: 100?C
Water boils at 100?C when the atmospheric pressure is 1 atmosphere (sea level).
Place for ads
Answer: Mitochondria
Mitochondria are the powerhouse of the cell, generating energy in the form of ATP through cellular respiration.
Answer: Carry oxygen
Red blood cells carry oxygen from the lungs to other parts of the body and return carbon dioxide back to the lungs.
Answer: Melting point
Melting point is a physical property of matter that refers to the temperature at which a solid turns into a liquid.
Place for ads
Answer: Endocrine system
The endocrine system is responsible for producing hormones, which regulate various bodily functions like metabolism and growth.
Answer: Carbon dioxide
Carbon dioxide (CO2) traps heat in the Earths atmosphere, contributing to the greenhouse effect and global warming.
Answer: Methane
Methane (CH4) is the main component of natural gas, used widely as a fuel.
Place for ads
Answer: Absorbing light
Chlorophyll is the pigment in plants that absorbs light energy, particularly in the blue and red wavelengths, which is essential for photosynthesis.
Place for ads