Std: Vth
S.l.No
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Sub: Science: Ist Semester.
Title
Matter.
Elements, compounds.
Air and Water.
Combustion.
Plants and Animals.
Natural Resources.
Transportation.
1
1. Matter.
I)
Choose the most appropriate answer and put a tick mark
against it.
1)
a)
Atomic theory was proposed by :
Kanada
b) John Dalton 
2)
a)
The Particle are held tightly in :
Liquid
b) Solid 
3)
a)
Liquid have a :
Definite volume but not Definite shapes 
c)
Definite shapes And Definite volume
4)
a)
The quantity of matter is given object or substance is called:
Buoyancy
b) Pressure
c) Density
d) Mass 
II)
Fill in the blanks with suitable words.
1)
2)
3)
4)
The low of conversion of matter is given by scientist Lavosier.
SI Unit of mass is Kilogram.
The SI unit of density is g/cm3 or kg /m3.
The element are classified into metal and non metal.
III)
Answer the following.
1)
Ans:
What is matter?
Matter is anything which occupies space and has weight.
2)
Ans:
State the properties of matter?
The properties of matter are:1) Matter occupies space. 2) Matter has weight.
3)
Ans:
How can you prove that matter occupies space?
Place a glass beaker completely filled with water on a plate. Immerse a stone
tied to the thread slowly into the beaker. Some water in the beaker flows out
and collects in the plate. This shows that matter occupies space.
c) Lavosier
c) Plasma
d) Berzill
d) Gasses.
b) Definite volume
d) Definite shapes
4)
Name the three forms of the matter?
Ans: The three forms of matter are:1) Solid
2) Liquid
3) Gas.
5)
How are the particles arranged in solids?
Ans: Arrangement of particle in solid:-In the solids Particles are held together
closely in compact manner. Solid have definite volume and shape. There is a force of
attraction between the particles.
2
Arrangement of particles in liquids:The particle is close together but they are not arranged in order.
Liquid have definite volume but they do not have definite shape.
6)
Ans:
Gases have no definite shape and volume? Why?
Gases have no definite shape and volume because the particle are arranged far
away from each other.
7)
Ans:
What is sublimation?
The change of state from solid to vapour or from vapour to solid without
passing through the liquid state. This is called sublimation.
8)
Ans:
State the law of conservation of the matter?
Law of conservation of matter:The quantity of matter in this universe never varies regardless of what change it
undergoes.
9)
Ans:
Define density and pressure?
Density: It is the amount of mass contain in a unit volume.
Pressure: It is the force exerted on a unit area.
10)
Ans:
Explain buoyancy?
When an object is immersed in water it exerts a downward force on the water
and the water in turn exerts an upward force on the objects. This upthrust is
equal to the mass of the liquid displaced. It is this up thrust that keeps a body
afloat this up thrust is called the force of buoyancy. The phenomenon is termed
as buoyancy.
2. ELEMENTS, COMPOUNDS AND MIXTURE.
I)
Choose the most appropriate answer and put a tick mark 
against it.
1)
a)
Water is an example for :
Elements
b) Compounds
2)
a)
Air is a.
Compound
II)
Fill in the blanks.
1)
2)
Oxygen is an example for element.
Water contains hydrogen and oxygen in the ratio 2:1.
III)
Answer the following.
1)
Ans:
What are elements?
Elements are those substances which cannot be subdivided chemically or cannot
be synthesized out of other elements Example: Iron, Gold, Mercury and
Oxygen.
2)
What are compounds?
b) Element
c) Impure substance d) Mixture.
c) Mixture 
3
d) Pure substances.
Ans:
Compounds are those substances which can be decomposed into constituent
elements or can be synthesized out of constituent elements. Example: Water
Sugar and Methane.
3)
Ans:
What are the mixtures? Give two examples?
A mixture is an impure substance made up of two or more elements or
compounds mixed physically in any proportion. Example: Air, Soil and
Seawater.
4)
Write the different between a compound and a mixture.
Ans:
Compound
1) A compound is formed by two
more elements combining
Chemically.
Mixture
1) A mixture is formed by mixing
substances Physically.
2) The compound generally will have
constituent’s elements in a
Definite ratio.
5)
Ans:
2) The constituents in a mixture can
be in ratio.
Classifying the following into elements, compounds and mixture?
a)
b)
c)
d)
e)
f)
Bromine – Elements.
Soil – Mixture.
Water - Compound.
Iron - Element.
Air - Mixture.
Helium - Element.
3.
g)
h)
i)
j)
Sugar - Compound.
Lime Juice - Compound.
Methane - Compound.
Carbon - Element.
AIR AND WATER .
I)
Choose the most appropriate answer and put a tick mark  against it.
1)
a)
The chief constituent of air is:
Hydrogen
b) Oxygen c) Nitrogen 
2)
a)
The largest source of the water on the Earth is :
River
b) Ocean  c) Pond
d) Well.
II)
Fill in the blanks.
1)
2)
Air is a mixture of many gasses.
The two forms of well are Open and tube.
III)
Answer the following.
1)
Ans:
Name the constituents of air?
The constituents of air are Nitrogen, Oxygen, Carbon dioxide, water vapour dust particles
and inert gases.
2)
Ans:
Write any two properties of air?
The two particles of air are:
1) Air occupies space.
4
d)
Carbon.
2) Air has weight.
3)
Ans:
Air has weight: Explain with an Experiment?
Take two balloons of the same size and mark them as A and B and blow them to equal size.
Tie these balloons to the end of a meter scale. Balance the scale. slowly allow the air to
escape from balloon A. The scale is imbalanced when the air is released from balloon A.
Another side of the scale goes down. Balloon B goes down Balloon A goes up. This shows
air occupies space.
4)
Ans:
Mention the uses of the water?
Water is used for many purposes like Drinking, Cooking, Bathing for Agriculture purpose
and in industries.
5)
Ans:
Name the different source of water?
The different sources of water are river, well, lakes, pond, springs, and rain water.
6)
Ans:
Which is the main source of underground water?
Tube well and open well is the main source of underground water.
7)
Ans:
What is spring water?
Water stored under the earth’s crust comes out on pressure through an opening this called
spring water.
8)
What is universal solvent? Explain with an experiment to show that water is a universal
Solvent
Ans: Most of the substance will dissolve in the water. So, water is called universal solvent. Take
some water in beaker. Add a spoonful of salt to the water and stir well. This salt mixed with water.
So, Water is called universal solvent.
9)
Ans:
What is potable water?
Water which is fit for drinking is called potable water.
10)
Ans:
Why is naturally available water not fit for drinking?
Naturally available water is not fit for drinking because it contains many germs and micro
organisms.
4. COMBUSTION.
I)
Choose the most appropriate answer and put a tic mark  Against it .
1)
a)
Bursting of cracker is an example for.
Slow combustion
b) Rapid combustion c) Explosion  d) Spontaneous combustion.
2)
a)
Charcoal is an example for :
Solid fuel  b)
Liquid fuel
II)
Fill in the blanks.
1)
2)
3)
Fuel produces heat and light energy on burning.
Vapour from paint is an example for gaseous fuel.
Rusting of Iron is a type of slow combustion.
III)
Match the following.
c)
Gas fuel
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d)
all the above.
1)
2)
3)
4)
Explosion
Rapid fire combustion
Spontaneous
Combustion.
Slow combustion
Bursting of crackers.
Igniting a gas stove.
Burning of phosphorus.
IV)
Answer the following.
1)
Ans:
Mention the three components of combustion triangle?
There are three components of combustion.
1) Oxygen 2) Heat 3) Fuel.
2)
Ans:
When water is poured on a burning object, it gets extinguished why?
When water is poured on a burning object, it gets extinguished because water cuts the
oxygen supply.
3)
Ans:
What is combustion?
Combustion is a chemical reaction that gives heat and light.
Respiration.
4)
Explain the different types of combustion with suitable example?
Ans: 1)
Slow combustion : The combustion which takes place slowly is called slow
combustion. Eg: Rusting Iron.
2)
Rapid combustion: It is a form of combustion in which large amount of heat and
Light energy are released at ones.
Eg: Lighting of a candle.
3)
Spontaneous combustion:
In this type of combustion no external heat is given,
Heat of the surrounding area is Sufficient to start combustion Eg: Burning white
Phosphorous in air.
4)
Explosion:
In explosion combustion takes place very quickly librating enormous
Amount of heat, light and sound energy, Eg: Bursting of crackers.
5)
Ans:
What is controlled combustion? Give on example.
The process of controlling the rate of combustion by controlling the combustible substance is
called controlled combustion. Eg: Kerosene stove.
6)
Ans:
What are the fuels? Give an example for each type of fuel.
Fuel is a substance that produces heat and light energy on burning.
Eg : Solid fuel – Wood, liquid fuel – Petrol, gaseous fuel – L.P.G
7)
Ans:
Suggest some alternative means of conversing fuel in your daily life?
1) Switch off lights and fans when not in use.
2) Go by walk to near shop.
3) Use public vehicles.
4. LIVING ORGANISMS.
I)
choose the most appropriate answer and put a tic mark  against it.
1)
The discharge of waist products from the body is called:6
a)
Respiration
Excretion  c)
b)
3)
Sugarcane is an example for:a) Biennial 
b) Triennial
Nutrition
d) Reproduction.
c) Perennial
d) Annual.
II)
Fill in the blanks.
1)
2)
3)
4)
5)
All living organisms are made up of cells.
Livings being made of only one cell are called unicellular.
The period between birth or death of living being is called life span.
An increase in the size is called growth.
The process in which oxygen is taken in and carbon dioxide is given out is Respiration.
III)
Answer the following.
1)
Ans:
a)
b)
c)
d)
e)
What are the characteristics of living beings?
The characteristics of living being are:
Growth
Movement
Respiration
Excretion
Response to stimulus
f)
g)
h)
i)
Reproduction
Life span
Cellular structure
Nutrition
2)
What is reproduction?
Ans: Living being continues their progeny by producing young ones of their own kind. This
process is called reproduction.
3)
Ans:
What is the nutrition?
Nutrition is the process by which a living being assimilates food and uses it for growth.
4)
Ans:
1)
How plants are are classified according to their life span?
According to their life span plants are classified into following types:
Annuals: These are the plants which live for one year or one season. Eg: Wheat, Paddy and
Mustard.
Biennials: These are the plants that live for two seasons Eg: carrot, sugar cane.
Perennials: These are the plants which live for many year and produce flower, fruits and
Seeds throughout the year. Eg : Mango tree, Apple tree.
2)
3)
5)
Ans:
Living being need food why?
Living being need food for their growth, survival and produce energy required for various
activities.
5. PLANTS AND ANIMALS.
I)
Choose the most appropriate answer and put a tic mark  against it.
1)
a)
The respiratory organs of the fish are gills.
Lungs b)
Gills 
c)
Skin d) Buckle cavity.
2)
The green Plants which prepare their own food are called autotrophs.
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a)
II)
1)
2)
III)
1)
Ans:
1)
2)
3)
4)
Autotrophs
b)
Heterotrophy c)
Climbers
d) Annuals.
Fill in the blanks.
Animal which depends upon either plants or animals for their food are called
Heterotrophs.
Plants respire through small openings called stomata.
Answer the following.
What are the difference between the plants and animals?
PLANTS
Plants do not move from one place
to another. There movement is
restricted.
Plants prepare their own food
Plants take carbon dioxide and give
out oxygen.
Plants reproduce by seeds.
1)
2)
3)
4)
ANIMALS
Animals can move from one place to
Another
Animals are depends on others for
Food
Animals take oxygen and give out
Carbon dioxide.
Animal reproduce by giving birth to
Young ones or by laying eggs.
2)
How do plants show movements? Give two examples?
Ans: Plants do not move from one place to another their movement is restricted.
Eg: a) Bending of the leaves towards sunlight.
b) Folding of leaves.
3)
Ans:
How does the growth of plants different from growth of animals?
Growth in plants is more in part like root tip, shoot tip, or tip of braches. In animals, growth
is not restricted to particular areas.
4)
Ans:
Mention the different methods by which plants and animals reproduce?
Plants reproduce by layering, grafting, by seeds, by buds and by cutting.
Animals reproduce by laying eggs or by giving birth to young ones.
6. NATURAL RESOURCES.
I)
Choose the most appropriate answer and put a tic mark  against it.
1)
a)
Kerosene and diesel are obtained from Petroleum.
Coal
b)
Petrol
c)
Petroleum  d)
2)
a)
Which of the following causes least pollution Compressed Natural gas.
Petrol
b)
compressed natural gas 
c)
Diesel
II)
Fill in the blanks.
1)
2)
3)
4)
The rocky and earthy layers of the earth’s crust are called lithosphere.
Natural gas is found with Petroleum in oil.
The oil extracted from oil traps is called crude oil.
In thermal power station coal is used as fuel to produce electricity.
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Natural gas.
d)
coal
III)
Answer the following.
1)
Ans:
What are the natural sources?
Air, Water, Soil, and fuels provided by the nature are called Natural sources.
2)
Ans:
Name the types of natural resource?
Solar energy, wind energy, air, water, soil and forest are types of natural resource.
3)
Ans:
How is soil formed?
Soil is formed by the disintegration of rocks.
4)
Ans:
Explain the uses of soil and forests?
Soil:1) Soil is required for the growth of plants.
2) Soil is home for many animals and insects.
Forest:1) Forest provide habitat for various plants and animals.
2) Forest provides useful material like wax, gum food and wood.
5)
Ans:
Why do we consider coal and petroleum as fossil fuels?
We consider coal and petroleum ass fossil fuels because they are formed by the remains of
dead plants and animals buried under the earth’s crust over millions of year.
7. TRANSPORTATION.
I)
Choose the most appropriate answer and put a tic mark  against it.
1)
a)
80% of goods and 70% of the people are Transported by:- Railways.
Airways
b)
Roadways
c)
Waterway
d)
Railways 
2)
a)
Pipe line transportation is used to transport goods like: Liquid and gases.
Solids
b)
Liquid
c)
Gases
d) Liquid and gases. 
3)
b)
The cheapest means of transportation is – waterways.
Roadways
b)
Airways
c)
Waterways
II)
Fill in the blanks.
1)
2)
3)
4)
There are 12 major ports in India.
The fastest manes of transportation is airways.
Ports allow the ships to stay in their docks.
There are 16 international airports in India.
III)
Match the following.
1)
2)
3)
4)
Aero plane = Air
Boat = Water (Sea)
Bus = Road
Train = Rail
IV)
Answer the following.
1)
Ans:
What is the transportation?
Carrying people and goods (things) from one place to another is called transportation.
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d)
Railways.
2)
Ans:
Mention the means of transportation?
The different menace of transport are:- Land, water and air.
3)
Ans:
How do you classify the land rote?
Land route can be classified into roadways, railways and pipeline.
4)
Ans:
What fuels are used in the following vehicles?
1) Bus = Diesel.
2) Train = Diesel, Coal
3) Ship = Coal and Bunker oil.
4) Helicopter = Gasoline, Avgas
5)
Ans:
Which is the most economical vehicle to go for short distance?
Bicycle is the most economical vehicle to go for short distance.
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