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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: Dolphin
Dolphins are mammals and they give live birth, unlike fish such as sharks.
Answer: Hydrogen
All acids contain hydrogen ions (H+), which is what makes them acidic.
Answer: CH4
Methane has the chemical formula CH4, consisting of one carbon atom and four hydrogen atoms.
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Answer: Vitamin D
Vitamin D is produced in the skin when it is exposed to ultraviolet (UV) light from the sun.
Answer: Skin
The skin is the largest organ in the human body, covering and protecting the internal organs.
Answer: 8
Oxygen has an atomic number of 8, meaning it has 8 protons in its nucleus.
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Answer: Mars
Mars is often called the Red Planet due to its reddish appearance, which is caused by iron oxide (rust) on its surface.
Answer: Nitrogen
Nitrogen is the most abundant gas in Earths atmosphere, making up approximately 78%.
Answer: Kelvin
The Kelvin scale is the SI unit of temperature and is used in scientific measurements.
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Answer: Nitrogen
Nitrogen makes up about 78% of Earths atmosphere, while oxygen is about 21% and other gases are in trace amounts.
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