What is the minimum number of carbon atoms of an alkane must have to form an isomer?

(a)

4

(b)

3

(c)

2

(d)

1

Hydrocarbons on burning in the air give CO₂ and _____________.

(a)

Water and heat

(b)

CO and Heat

(c)

Water and CO

(d)

Water and Sulphur dioxide

Which Amorphous form of carbon is used in making electrode in dry cell?

(a)

coke

(b)

gas carbon

(c)

lampblack

(d)

charcoal

The thinnest and strongest allotrope of carbon is ______________.

(a)

Graphite

(b)

Fullerene

(c)

Graphene

(d)

Diamond

Incomplete combustion of carbon fuels release this toxic gas into the atmosphere.

(a)

CO

(b)

CO₂

(c)

NO

(d)

NO₂

How many valence electrons are there in carbon?

Who is called 'Father of Modern Organic Chemistry'?

Which three resin codes are unsafe?

Why plastic is said to be harmful?

Does carbon soluble in water? Name some compounds which are soluble in water.

What can you do to prevent plastic pollution?

Name three unsafe resin codes of plastics describe their uses.

List out the drawbacks of plastic.

Give some steps to protect our environment free from plastic .