1.Global warming is due to increased production of<\/p>\n
Answer : Carbon dioxide<\/p>\n
2. Which acid is present in lemon<\/p>\n
Answer : Citric acid<\/p>\n
3.Brass is an alloy of copper and<\/p>\n
Answer : Zinc<\/p>\n
4. The hardest natural substance known in the world is<\/p>\n
AnswerAnswer Answer : Diamond<\/p>\n
5.Permanent hardness of water may be removed by the addition of<\/p>\n
Answer : Sodium carbonate<\/p>\n
6.Which is the most commonly used bleaching agent<\/p>\n
Answer\u00a0 : Chlorine<\/p>\n
7. Which of the following gas is used in cigarette lighters<\/p>\n
Answer : Butane<\/p>\n
8. Baking Soda is also known as<\/p>\n
Answer : Sodium bicarbonate<\/p>\n
9. Bond order of a molecule can be at the maximum of<\/p>\n
Answer : 3<\/p>\n
10. Neutral molecules in which one of the carbon atoms has six valence electrons are called<\/p>\n
Answer : Carbenes<\/p>\n
11. Which of the following is non-radioactive<\/p>\n
Answer : Deuterium<\/p>\n
12. Which of the following is a thermo setting plastic<\/p>\n
Answer : Bakelite<\/p>\n
13. Octane number of petroleum can be increased by<\/p>\n
Answer :Atomizationa<\/p>\n
14. Atoms of the same element having the same atomic numbers but different atomic weights are called<\/p>\n
Answer : Isotopes<\/p>\n
15. What is the main constituent of soap<\/p>\n
Answer : Sodium hydroxide<\/p>\n
16.Name a fertilizer that contain maximum amount of Nitrogen<\/p>\n
Answer : Urea<\/p>\n
17.Which compound is called oil of wintergreen<\/p>\n
Answer : Methyl Salicylate<\/p>\n
18. What is alum<\/p>\n
Answer : Potassium Aluminium Silicate<\/p>\n
19. A minute amount of radio isotope is called<\/p>\n
Answer : Tracer<\/p>\n
20. Name an alloy of copper, antimony and tin<\/p>\n
Answer : Babbitt metal<\/p>\n","protected":false},"excerpt":{"rendered":"