Question : An ecosystem consists of:

Option 1: producers, consumers and decomposers in a particular area.

Option 2: all the plants and animals of an area.

Option 3: a living community and its environment.

Option 4: carnivorous and herbivorous of an area.

Question : Identify an example of decomposers that are found in the bottom of a pond.

Option 1: Zooplankton

Option 2: Jellyfishes

Option 3: Flagellates

Option 4: Phytoplankton

Question : In a food chain, the solar energy utilized by plants is only?

Option 1: 10 per cent

Option 2: 1 per cent

Option 3: 0.1 per cent

Option 4: 0.01 per cent

Question : Butan-2-ol is a:

Option 1: tertiary alcohol

Option 2: ketone

Option 3: primary alcohol

Option 4: secondary alcohol

Question : Courier service comes under which sector?

Option 1: Primary

Option 2: Secondary

Option 3: Tertiary

Option 4: Both secondary and tertiary