How will you measure your height with the unit?

(a)

Kilogram

(b)

Litre

(c)

Metre

(d)

Second

Seeds from water-melon can be removed by ________

(a)

hand-picking

(b)

filtration

(c)

magnetic separation

(d)

decantation

The habitat of water hyacinth is

(a)

Aquatic

(b)

Terrestrial

(c)

Desert

(d)

Mountain

Choose the set that represents only biotic components of a habitat.

(a)

Tiger, Deer, Grass, Soil

(b)

Rocks, Soil, Plants, Air

(c)

Sand, Turtle, Crab, Rocks

(d)

Aquatic plant, Fish, Frog, Insects

We should include fruits and vegetables in our diet, because _______.

(a)

They are the best source of Carbohydrates

(b)

They are the best source of Proteins

(c)

They are rich in minerals and Vitamins

(d)

They have high water content

Electricity is produced in

(a)

transformer

(b)

power station

(c)

electric wire

(d)

television

The ‘control centre’ of the eukaryotic cell is

(a)

Cell wall

(b)

Nucleus

(c)

Vacuoles

(d)

Chloroplast

People who made mariner’s compass for the first time.

(a)

Indians

(b)

Europeans

(c)

Chinese

(d)

Egyptians

About 30% of the fresh water is found in?

(a)

glaciers

(b)

ground water

(c)

other sources of water

(d)

0.3%

Usage of chemical pesticides and fertilisers causes ________ pollution.

(a)

Air pollution

(b)

Water pollution

(c)

Noise pollution

(d)

None of the above