HP Science Practice Set 51 | Interactive MCQ Mock Test

1. Stacks of which structure in a chloroplast are called grana ?

Science 📄 JOA IT (2026)

A. Stroma B. Stroma lamellae C. Outer membrane D. Thylakoids

2. Why do all elements in the same period of the periodic table have the same number of electron shells?

Science 📄 JOA IT (2026)

A. They have the same atomic mass B. They belong to the same group C. Their outermost electrons occupy the same principal shell D. They contain the same number of valence electrons

3. Why do all elements in the same period of the periodic table have the same number of electron shells?

Science 📄 JOA IT (2026)

A. They have the same atomic mass B. They belong to the same group C. Their outermost electrons occupy the same principal shell D. They contain the same number of valence electrons

4. Why do all elements in the same period of the periodic table have the same number of electron shells?

Science 📄 JOA IT (2026)

A. They have the same atomic mass B. They belong to the same group C. Their outermost electrons occupy the same principal shell D. They contain the same number of valence electrons

5. Why do all elements in the same period of the periodic table have the same number of electron shells?

Science 📄 JOA IT (2026)

A. They have the same atomic mass B. They belong to the same group C. Their outermost electrons occupy the same principal shell D. They contain the same number of valence electrons

6. Why do all elements in the same period of the periodic table have the same number of electron shells?

Science 📄 JOA IT (2026)

A. They have the same atomic mass B. They belong to the same group C. Their outermost electrons occupy the same principal shell D. They contain the same number of valence electrons

7. Why do all elements in the same period of the periodic table have the same number of electron shells?

Science 📄 JOA IT (2026)

A. They have the same atomic mass B. They belong to the same group C. Their outermost electrons occupy the same principal shell D. They contain the same number of valence electrons

8. Why do all elements in the same period of the periodic table have the same number of electron shells?

Science 📄 JOA IT (2026)

A. They have the same atomic mass B. They belong to the same group C. Their outermost electrons occupy the same principal shell D. They contain the same number of valence electrons

9. Why do all elements in the same period of the periodic table have the same number of electron shells?

Science 📄 JOA IT (2026)

A. They have the same atomic mass B. They belong to the same group C. Their outermost electrons occupy the same principal shell D. They contain the same number of valence electrons

10. Which physical quantity is defined as the rate of change of velocity with time?

Science 📄 JOA IT (2026)