Which one of the following has the highest calorific value?

A substance which reacts with oxygen giving heat is called a combustible substance. Which one of the following is a combustible substance?

Air is a natural resource and cannot be exhausted by human activities. It is known as inexhaustible natural resource. Which of the following is another inexhaustible natural resource?

Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?

Which of the following is not a common property of plastics?

The most suitable material for the preparation of handles of cooking utensils is

Alcohol is produced with the help of

Out of the following groups of crops which group is included in kharif crops?

Weeds are the

The process of conversion of sugar into alcohol is called

Water which looks clean still has disease carrying _______and _____ impurities.

Water which is suitable for ______ is called _______water

While______your teeth, leaving the______ running may waste several_________of water.

CFCs deplete the______

Flow of negatively charged electrons is called...............

One of the most common applications of chemical effect of electric current is..........

A person 1 m in front of a plane mirror seems to be __________m away from his image.

The angle of __________ equals the angle of reflection.

__________ are minor planets that revolve around the Sun and are located between Mars and Jupiter.

___________ constitutes the Sun, eight planets with their moons and all others objects that are bound to the sun due to gravity, e.g. asteroids, comets and meteors.

________ are bright objects that revolve around the Sun.

_________ is a group of stars arranged in a definite pattern.

________ is the star which appears to be stationary near the northern horizon.

_______ are celestial bodies of the universe and continuously emit heat and light

Force can change the _________ of moving object.

________________protects animal in their natural habitat.

To move a loaded trolley, we have to __________ it.

_______________is used in vaseline

Plastics are............ conductors of heat

...........is a process to loosen soil.

Oviparous animals give birth to young ones.

Muscle cells are branched.

Unicellular organisms have one-celled body.

Coal can be drawn into wires.

Generally, non-metals react with acids.

Oxygen in air is an exhaustible natural resource

Kerosene is not a fossil fuel.

Coal tar is a mixture of various substances.

Anthrax is the common disease in human and other animals.

Viruses can only multiply in a living cell

Microorganisms can be seen with naked eyes

All microbes are disease causing

Cells of root nodules of leguminous plants fix nitrogen.

All crop plants are sown as seeds in the field.

Growing different crops in different seasons in the same field will deplete the soil of nutrients.

Using good quality seed is the only criterion to get high yield.

Rust of wheat

Chickenpox

Rabi season crop

Weeding

Urea

Combines

Silos