set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Filtration can be used to separate

a) liquids from liquids

b) liquids from solids

c) solids from solids

d) liquids from gases

Question : 2

Solubility is a good separation technique for

a) different salts

b) noble gases

c) pure metals

d) metallic alloys

Question : 3

The phenomenon of radioactivity was invented by

a) Henry Bacquerel

b) Maril Curie

c) Pierre Curie

d) J.J Thompson

Question : 4

The boiling point of alcohol is 78°C. What is this temperature in Kelvin scale

a) 375 K

b) 373 K

c) 351 K

d) 78 K

Question : 5

Select the one that is a physical change.

a) Rusting of iron

b) Growth of plant

c) Digestion of food

d) None of these

Question : 6

The chemical name of 'Marsh gas' is

a) Propane

b) Ethene

c) Methane

d) Hexane