Any substance that releases energy when burnt is called:

coal burns with _________

The substances which have very low ignition temperature will

Supporter of combustion

Example of inflammable substance

Ignition temperature is

Combustion is a

Blue- green algae can fix atmospheric_______ in the soil

Cholera is caused by________________

The bread or idli dough rises because of

What are the major groups of microorganisms

Rhizobium bacteria___________

Malaria is caused by

Malaria is caused by

Penicillin is a

Spirogyra is

Vaccine for small pox was discovered by ____________

Which of the following is an antibiotic

Which was the first antibiotic to be discovered

Name a disease which is common in human and other animals

What are some communicable diseases?

Microorganisms are classified into _______major groups

What are bacteria that cause disease?

Assertion: Adding salt preserves the meat and fish for ages.

Reason: Salt draws water out of food and dehydrates the food.

Penicillin is a

Vaccine for small pox was discovered by ____________

Fluid friction is the force that opposes a motion that takes place within fluids. The frictional force exerted by fluid is also called

In a cycling race, it is It is observed that a cyclist

normally bends his body. WHY?

The two common forces attracting on us

everywhere are

To sharpen the blade of a knife by rubbing it against the the service, which of the following will be the most suitable?

Friction can never be eliminated.

A soapy floor is slippery due to increase the fiction.

Friction decreases to the increase in the smooth of a surface

The force of friction is greater if a rough surface is. Involved

Rocket has A special streamlined body.

A boat going through the surface of a lake is an example of which type of friction?

Without friction, an object in motion would never stop.

A rocket has been fired upwards to launch a satellite in its Orbit name the forces acting downwards on the rocket immediately after leaving the launching pad

Identify the agent exerting the force while taking out paste from a toothpaste tube

Which type of force is force of gravity

Which of the following is a non contact force

pressure is defined as

SI unit of force is

A rocket has been fired upwards to launch a satellite in its Orbit name the forces acting downwards on the rocket immediately after leaving the launching pad

which of the following is a contact force

Interactive force between two charged body is known as

If we release a magnet held in our hand it falls to the ground the force responsible for this is

a liquid can exert pressure on the side of container as well as at the bottom of the container

When two equal forces are acting on an object in opposite direction object will not move from its place

Which of the following is not an example of muscular force

A camel can walk in deserts more easily as compared to horse donkey and others because its

If a given force is applied on a smaller area of contact the pressure exerted by it

What is Force

A football player

taking a penalty

kick is _____

At least _____ objects must interact

for a force to come into play.

Forces applied on an object in the

same _____ add to one another.

If the two forces act in the opposite

directions on an object, the net force acting

on it is the _____ between the two

forces.

The strength of a force is usually

expressed by its _____.

SI unit of Force is

The effect on the object is due to the _____

force acting on it.

Effects of Force are _____

The force resulting due to the action of

muscles is known as the _____ Force.

Which of the following are contact Forces

The force responsible for changing the

state of motion of objects is the force of _____.

The force exerted by a charged body

on another charged or uncharged body

is known as _____ force.

What forces are acting on a bird flying in the sky?

The force acting on a unit area of a

surface is called _____.

Why porters place a round piece

of cloth on their heads?

Why shoulder

bags are provided with broad straps and

not thin strap?

_____ exert

pressure on the walls of the

container

The envelop of air is known as the _____

The pressure

exerted by this air is known as _____

To draw water from a well we have to _______ at the rope.

The north pole of a magnet _____ the north pole of another magnet.

Coal with largest C content is

Which of the following properties is NOT a characteristic of a good fuel?

Name the substance which is used in candle and ointment

Name the process which is used to separate various constituent of petroleum

Refining of petroleum is done in

NAME A FUEL WHICH CAN BE USED AS A DOMESTIC FUEL

Identify the fuel that leaves more smoke and ash on burning.

Processes by which coal is formed-

Where is kerosene mainly used?

Renewable resources ...

Gas which occurs above the petroleum oil trapped under the rocks is

What do fuels combine with to produce heat and light?

The diagram shows which of the following process

Which of the following pair shows inexhaustible resource?

Which of the following is not a product of coal?

The organisation which gives driving tips for conservation of fuels is

Which of the following gas causes global warming

IDENTIFY THE AGRICULTURAL TOOL

IDENTIFY THE PLOUGH FROM THE FOLLOWING FIGURES

NAME THE CROP

WHICH OF THE FOLLOWING CROP GROWS IN WINTER?

WHICH OF THE FOLLOWING IS NEITHER KHARIF CROP NOR RABI CROP?

THIS INSTRUMENT IS USED FOR

WHICH AGRICULTURAL PRACTICE HELPS IN TURNING AND LOOSENING OF SOIL?

OUT OF FERTILIZER AND MANURE WHICH ONE IS EASILY ABSORBED BY THE ROOTS ?

SPECIFY THE PICTURE WHICH HELPS IN SOWING OF SEEDS

WHEN YOU WILL PUT SEEDS IN WATER ,WHAT IS TRUE ABOUT DAMAGED SEEDS?

WHICH OF THE FOLLOWING IS NOT A FERTILIZER?

WHILE SOWING OF SEEDS PROPER DISTANCE MUST BE MAINTAINED BETWEEN EVERY SEED .WHY?

WHICH OF THE FOLLOWING CROP GROWS IN WINTER?

answer choices

Weeds can be defined as

The plant roots contain nitrogen fixing bacteria _________________.