Class 10 chemistry Questions and Answers for Term 2 CBSE 2021–22
Q1.What is quick lime?
Ans. Quick lime is calcium oxide (CaO)
Q2.What is slaked lime?
Ans.slaked lime is calcium hydroxide Ca(OH)2
Q3.What is the nature of slaked lime?
Ans. It’s basic by nature.
Q4.What do you observe when water and quick lime is added in a beaker? Can you identify the type of reaction?
Ans.A fast and vigorous reaction place. The beaker becomes hot indicating its exothermic nature. It is an example of a combination reaction.
Q5.Write the basic chemical reaction involved in slaking of lime.
Ans.
Q6.What is the colour of freshly prepared ferrous sulphate solution? State its common name in hydrated state.
Ans. Its colour is light green. Its called green vitriol.Chemical formula, FeSO4 .7H2O
Q7.What is the colour of ferric sulphate solution?
Ans. It is light brown in colour.
