Chemistry Quiz
1.Global warming is due to increased production of
Answer : Carbon dioxide
2. Which acid is present in lemon
Answer : Citric acid
3.Brass is an alloy of copper and
Answer : Zinc
4. The hardest natural substance known in the world is
AnswerAnswer Answer : Diamond
5.Permanent hardness of water may be removed by the addition of
Answer : Sodium carbonate
6.Which is the most commonly used bleaching agent
Answer : Chlorine
7. Which of the following gas is used in cigarette lighters
Answer : Butane
8. Baking Soda is also known as
Answer : Sodium bicarbonate
9. Bond order of a molecule can be at the maximum of
Answer : 3
10. Neutral molecules in which one of the carbon atoms has six valence electrons are called
Answer : Carbenes
11. Which of the following is non-radioactive
Answer : Deuterium
12. Which of the following is a thermo setting plastic
Answer : Bakelite
13. Octane number of petroleum can be increased by
Answer :Atomizationa
14. Atoms of the same element having the same atomic numbers but different atomic weights are called
Answer : Isotopes
15. What is the main constituent of soap
Answer : Sodium hydroxide
16.Name a fertilizer that contain maximum amount of Nitrogen
Answer : Urea
17.Which compound is called oil of wintergreen
Answer : Methyl Salicylate
18. What is alum
Answer : Potassium Aluminium Silicate
19. A minute amount of radio isotope is called
Answer : Tracer
20. Name an alloy of copper, antimony and tin
Answer : Babbitt metal
