Choose the correct one

(a)

km > mm > cm > m

(b)

km > mm > m > cm

(c)

km > m > cm > mm

(d)

km > cm > m > mm

200 ml of water is poured into a bowl of 400 ml capacity. The volume of water will be_________

(a)

400 ml

(b)

600 ml

(c)

200 ml

(d)

800 ml

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

When was the first computer introduced?

(a)

1980

(b)

1947

(c)

1946

(d)

1985

An iron ball at 50°C is dropped in a mug containing water at 50^o C. The heat will

(a)

flow from iron ball to water

(b)

not flow from iron ball to water or from water to iron ball

(c)

flow from water to iron ball

(d)

increase the temperature of both

Drying of wet clothes in air is an example of

(a)

Chemical change

(b)

Undesirable change

(c)

irreversible change

(d)

physical change

_______ and _________ are the two gases, which when taken together, make up about 99 percentage of air.
I. Nitrogen
II. Carbon-di-oxide
III. Noble gases
IV. Oxygen

(a)

I and II

(b)

I and III

(c)

II and IV

(d)

I and IV

Breakdown of food into smaller molecules in our body is known as

(a)

Muscle contraction

(b)

Respiration

(c)

Digestion

(d)

Excretion

A freely suspended magnet always comes to rest in the ________direction

(a)

North - east

(b)

South - west

(c)

East - west

(d)

North - south