________% of carbon dioxide is present in the atmosphere.

____________% of oxygen is present in the atmosphere.

_____________ is the gas that only support burning.

_____________ is used in fire extinguisher.

What gas is released into the atmopshere when fossil fuels are burned?

Which gas makes up 78% of the atmosphere?

Moving air is called_____

Moving air is called_____

Magnet looses it magnetic power on

. What would we call a nail that can pick up a paperclip because it is touching a magnet?

Which object would a magnet attract?

Which two metals will be attracted by a magnet?

Where on a magnet is the force the strongest

A credit card has a _______ kept across its poles.

When a magnet is suspended freely it always aligns itself in -------- direction?

----- is the only natural magnet.

Which of the following cannot be used to make a magnet?

Which of the following is not a non-magnetic substance?

When a magnet is placed on a plastic plate with common pins spread on it, then ----

Which of the following gets attracted to a magnet?

The North end of the freely suspended magnet points towards -------?

The south pole of the freely suspended magnet points towards -------?

The south pole of the freely suspended magnet points towards -------?

like poles of magnets -------- each other.

----- is the surest test of magnetism.

Unlike poles of magnets -------- each other.

When a S pole a magnet in brought near the N pole of a freely suspended magnetic needle, then it -----------?

When a N pole of a bar magnet is brought near the north pole of a freely suspended magnetic needle, then it -----------?

____________is a device used by pilots and navigators used to find the direction.

Magnetism of a magnet is lost by doing which of the following acts

Which of the following gets demagnetised when a powerful magnet is kept near it

Which of the following does not get demagnetised when a powerful magnet is kept near it

electric bell is an example of _____________magnet.

--------type of magnet is used in cranes to lift heavy containers from ships.

The nerves in our body transmits messages as __________

Animals and plants have certain features which make them to survive in a particular habitat. This is called

Which is a biotic component of environment?

What are the characteristics of a desert plant?

Respiration in aquatic animals occurs by

The process of removal of wastes in plants.

Soil, water and air are ……………… components of a habitat.

All living organisms need water for their survival.

Leaves in aquatic plants are reduced in size to minimize their evaporating surface.

Leaves in aquatic plants are reduced in size to minimize their evaporating surface.

All objects have similar shapes and sizes.

Choose the creature that breathes only through its skin.

This method ______________can

be used for separating slightly larger

sized impurities like the pieces of dirt,

stone, and husk from wheat, rice or

pulses.

While Handpicking the quantity of such

impurities is ___________

Stalks are________ before the grain is separated

from them.

In ________ the stalks are beaten to free

the grain seeds.

________are also used to thresh large quantities of grain.

___________ is used to

separate heavier and lighter components

of a mixture by wind or by blowing air.

________ allows the fine flour particles

to pass through the holes of the sieve

while the bigger impurities remain on

the sieve.

In a________, impurities like a husk

and stones are removed from wheat

before grinding it.

When the heavier component in a

mixture settles after water is added to

it, the process is called _______________.

When the water (along with the dust) is

removed, the process is called

___________.

Fruit and vegetable juices are usually

_________ before drinking to separate the

seeds and solid particles of pulp.

The process of conversion of water

into its vapour is called ____________.

Common salt is then

obtained from this mixture of salts by

further ________________.

When the steam comes in contact

with the metal plate cooled with ice, it

__________and forms liquid water.

Husk and stones could be separated from grains by handpicking.

The husk is separated from heavier seeds of grain by _____________.

A _______________________ is one in which no more of that substance can be

dissolved.

A plant with weak stem is _____________.

The plants which have branches at the base are __________.

Which plant is the example of a herb?

The plant which takes the support of the neighbouring structures and climbs up is _______________.

Classify Neem in one of the categories of plants.

Lemon plant is a _______________.

Pumpkin plant is a _________________.

A tree has a soft trunk and soft branches.

Based on the characters most plants can be classified as into three categories-

Lines on the leaves are called-

The part of the leaf by which it is attached to the stem it is known as-

Which one of the following are the fibrous root-

Which part of the plant supplies water to the leaf-

Leaves lose water through the process of-

Which one of the following is tap root