Question # 1

------------- through the food chain is one of the most important functionsof an ecosystem in maintaining balance of nature.

Choose an answer

Waisting of energy

Destroy fo energy

Transfer of energy

Produce of energy

--------occupy the b ase of pyramid.

Choose an answer

Producers

Primary canivores

Herbivores

Top carnivores

Surface temperature of the Sun is

Choose an answer

3000 oC

6000 oC

15000 oC

1,500,000 oC

In humans, a sperm has 23 chromosomeds. Egg cell has.

Choose an answer

23 chromosomes

46 chromosomes

No chromosomes

69 Chromosomes

Draught and excessive...............in the soil also have harmful effects on crop productivity.

Choose an answer

Water

Insects

Salts

Minerals

Which factor is responsible for ecological imbalance.

Choose an answer

Over hunting

Change in water supply

Migration

All these

During respiration by the animals, whihc gas is released into the atmosphere.

Choose an answer

Nitrogen

Oxygen

Carbon Di oxide

Hydrogen

Mg belong to the period of the Periodic Table.

Choose an answer

1st

2nd

3rd

4th

The force acting normally unit area is.

Choose an answer

Strees

Strain

Motion

Pressure

An electric circuit is the path along whihc.

Choose an answer

Electron revolve around the nucleus of an atom

Electric charge flows.

Magnetic lines of force move

Electric motors move

In man, every somatic cell has chromosomes.

Choose an answer

23

46

16

20

More Classes

Other Links

General Science 8th Class English Medium Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer