acids, bases, salts and metals - Category wise Question and Answer Practice Test with Solutions

Question : 26

‘Alum’ is an example of –

a) double salt

b) acids

c) single salt

d) none of these

Question : 27

Bleaching powder is soluble in cold water giving a milky solution due to –

a) lime present in it

b) calcium carbonate formation

c) available chlorine

d) the absorption of carbon dioxide from atmosphere

Question : 28

Plaster of paris is obtained –

a) by heating gypsum to a very high temperature

b) by adding water to calcium sulphate

c) by adding sulphuric acid to calcium hydroxide

d) by heating gypsum to 373 K.

Question : 29

Slaked lime is prepared by adding water to –

a) lime water

b) milk of lime

c) bleaching powder

d) quicklime

Question : 30

Match Column I with Column II and select the correct answer using the codes given below the lists:

a) A – S; B – P; C – R; D – Q

b) A – S; B – P; C – Q; D – R

c) A–P; B–S; C–Q; D–R

d) A – P; B – S; C – R; D – Q