set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

Slaked lime is prepared by adding water to –

a) lime water

b) milk of lime

c) bleaching powder

d) quicklime

Question : 2

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

Question : 3

Table salt (NaCl) is a product of

a) Strong acid and strong base

b) Weak acid and strong base

c) Weak acid and weak base

d) Strong acid and weak basic

Question : 4

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 : 5

‘Alum’ is an example of –

a) double salt

b) acids

c) single salt

d) none of these

Question : 6

What is anode mud ?

a) Impurities collected at anode in electrolysis during purification of metals

b) Fan of anode

c) Metal of anode

d) All of these