! Here’s a set of multiple-choice questions (MCQs) based on previous years’ Central Teacher Eligibility Test (CTET) for the Science subject, along with answers and explanations:

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CTET Science MCQ Test

1. Which of the following is NOT a primary color of light?
   a) Red
   b) Green
   c) Yellow
   d) Blue
2. What is the chemical symbol for the element Iron?
   a) I
   b) Fe
   c) Ir
   d) In
3. Which gas is most abundant in the Earth’s atmosphere?
   a) Oxygen
   b) Carbon dioxide
   c) Nitrogen
   d) Argon
4. What is the SI unit of electric current?
   a) Ampere
   b) Watt
   c) Ohm
   d) Volt
5. Which of the following is a non-renewable source of energy?
   a) Solar
   b) Wind
   c) Nuclear
   d) Tidal

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Answer Key:

1. c) Yellow
   Explanation: The primary colors of light are red, green, and blue.
2. b) Fe
   Explanation: The chemical symbol for Iron is Fe, derived from its Latin name “Ferrum.”
3. c) Nitrogen
   Explanation: Nitrogen makes up about 78% of the Earth’s atmosphere, making it the most abundant gas.
4. a) Ampere
   Explanation: The SI unit of electric current is the Ampere (A).
5. c) Nuclear
   Explanation: Nuclear energy is derived from nuclear reactions, typically involving the splitting of atoms, and is considered a non-renewable energy source.

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Feel free to reach out if you need more questions or further explanations!