Question

Which of the following is a combustible? *

Stone piece

Wood

Glass

None of these



The process of conversion of wood into coal is called *

Carbonisation

Catagenesis

Carboniferous

None of these



Which of the following metal is stored in kerosene?

Sodium

Magnesium

Phosphorus

Zinc



Which of the following is a characteristic of plastics? *

Electrical conductors

Heat conductors

Biodegradable

Non-biodegradable



Spherical-shaped bacteria are called *

Bacilli

Vibrio

Spirilla

Cocci



The chemical substances rich in nutrients are called *

Fertilisers

Weedicides

Pesticides

Herbicides



The force exerted by our muscle is called *

Electrostatic force

Muscular force

Gravitational force

Non-contact force



Name the chemical process in which a substance reacts with oxygen to give out heat. *

Reaction

Junction

Combustion

All of these


Petroleum is also known as *

Coke

Black gold

Tar

None of these



Metal oxides are *

Neutral

Basic

Acidic

All of these



Plastics that retain their plasticity on repeated heating are called

Thermosetting plastics

Thermoplastics

Thermal plastics

None of these



The fungus that is commonly used in bakery and beverage industries is *

Penicillium

Yeast

Agaricus

Rhizopus



Which of the following is not provided to the soil by a chemical fertiliser? *

Nitrogen

Humus

Potassium

Phosphorus


The strength of force is expressed by its *

Weight

Mass

Magnitude

Longitudinal force



Which of the following is an example of inflammable substance? *

Iron

Glass

LPG

Stone


Name the petroleum product used for surfacing of road. *

Peat

Bitumen

Lignite

Anthracite


The metal found in liquid state is *

Mercury

Silver

Calcium

Sodium



Fossil fuels are

Coal

Petroleum

Natural gas

All of these


please answer me fast
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Answer 1

Answer:

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Explanation:

wood is combustible

conversion of wood into coal is known as carbonisation

phosphorous is stored in kerosene because it is highly reactive with outer surroundings and water.

non- biodegradable

it coccus not cocci

fertilizers

muscular force

combustion

black gold

basic

thermoplastics

yeast

humus

magnitude

LPG

bitumen

mercury