2. Sample Papers
  3. 4th Class
  4. Science

4th Class Science Sample Paper Science Olympiad Model Test Paper-20

  • question_answer
    _________ is the by-product produced during the process of photosynthesis.

    A) Nitrogen

    B) Oxygen

    C) Carbon dioxide

    D) All of these

    E) None of these

    Correct Answer: B

You need to login to perform this action.
You will be redirected in 3 sec spinner