6. A projectile launched at which degree angle has the greatest range?

Answer: 45 degree angle

7. What is the unit of measurement of cotton?

Answer: Bales

8. Which metal is added to fireworks to get the lilac colour?

Answer: Potassium

9. Which acid is used to acidify foods and beverages such as various colas?

Answer: Phosphoric Acid

10. What kind of creature is a ‘silverfish’?

Answer: Wingless insect