Science Grade7 Quiz

1. Cells that help in blood clotting

• Red blood cell

• White blood cell

• Blood platelets

• Plasma

2. Human Heart has ___ chambers

• One
• Two
• Three
• Four

3. 20th elment in periodic table is __

• Neon
• Calcium
• Potassium
• Boron

4. Hydroxide contains ___

• Only oxygen
• Only Hydrogen
• Both oxygen and hydrogen
• None

5. Iron is also called as ___

• Ferum
• Natrium
• Kalium
• Aurum

6. Periodic table consist of __ elements

• 24
• 118
• 98
• 68

7. Oxygenated blood conists of ___

• carbon dioxide
• Nitrogen
• oxygen
• water

8. Which one is not blood vessel

• Arteries
• Veins
• Capillaries
• Plasma

9. Oxygenation of blood takes place in _

• Lungs
• liver
• kidney
• heart

10. Potassium Hydroxide

• POH
• KOH
• CaO
• KHO