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Worksheets

REVISION

Total questions: 150

Worksheet time: 1hrs 28mins

Name
Class
Date
1.

Which of the following is a physical change?

a)

Rusting of iron

b)

Melting of wax

c)

Combustion of magnesium ribbon

d)

Burning of candle

2.

A chemical change may involve

a)

Change in color only

b)

Change in temperature only

c)

Evolution of gas only

d)

Any or all of the above

3.

Which of the following processes is used to prevent articles from rusting?

a)

Crystallization

b)

Galvanization

c)

Evaporation

d)

Electolysis

4.

Expansion on heating and contraction on cooling of metals is a

a)

Chemical Change

b)

Physical Change

c)

Irreversible change

d)

Reversible change

5.

Which of the following changes is accompanied by sound?

a)

Photosynthesis

b)

Spoilage of food

c)

Explosion of fire works

d)

Crumpling of paper

6.

Name the gas which turns lime water milky.

a)

carbon dioxide

b)

oxygen

c)

nitrogen

7.

Melting of a wax is a _____ change.

a)

physical

b)

chemical

8.

Which of the two is permanent change chemical change or physical change?

a)

physical

b)

chemical

c)

all of them

d)

none of them

9.

The chemical name of baking soda is Sodium hydrogencarbonate.

a)

true

b)

false

10.

What type of change is photosynthesis?

a)

physical change

b)

chemical change

11.

A change is a chemical change when it is accompanied by:

a)

energy change

b)

formation of new substances

c)

change in chemical properties

d)

all of the above

12.

The shipping industry has to bear huge financial losses because of rusting of ships.The rusting of ships occurs because:

a)

the body of ship is always in contact with water

b)

the air around the ship is humid

c)

presence of salts in sea water speed the process of rusting

d)

all of the above

13.

The chemical formula for Magnesium Oxide ?

a)

( Mgo2 ]

b)

[ Mg ( OH)2 ]

c)

[ MgO]

14.

Which of the following processes is used to prevent articles from rusting?

a)

Crystallization

b)

Digestion

c)

Galvanization

d)

Magnetic Effect

15.

Crystallization is a process to obtain -

a)

Pure solids

b)

Pure liquids

c)

Candies

d)

Solids and powder

16.

Equation for reaction between carbon dioxide and lime water :

a)

Carbon Dioxide + Lime Water = Carbon Monoxide

b)

Carbon Dioxide + Lime Water = Calcium Carbonate

c)

Carbon Dioxide + Lime Water = Magnesium Hydroxide

d)

Carbon Dioxide + Lime Water = Aqueous Solution

17.

What is galvanisation ?

a)

The process of depositing iron over steel

b)

The process of depositing manganese over iron to prevent from rusting

c)

The process of depositing a layer of nickel over zinc

d)

The process of depositing a layer of zinc over iron

18.

Is neutrilisation a chemical change ?

a)

Yes

b)

No

19.

Which gas is evolved when vinegar reacts with baking soda

a)

Oxygen

b)

Nitrogen

c)

Carbon Dioxide

d)

Hydrogen

20.

is the picture chemical or physical

a)

chemical

b)

physical

21.

rust is chemical

a)

true

b)

false

22.
1. Sugar dissolves in warm water
 
 
a)
Physical change
b)
Chemical Change
23.
4. A piece of paper burns. 
 
a)
Physical Change
b)
 Chemical Change
24.

What are the products of aerobic respiration?

a)

Carbon Dioxide and Energy

b)

Lactic Acid

c)

Water and Carbon Dioxide

d)

Glycogen and Carbon Dioxide

25.
What is the organ "x"
a)
Heart
b)
Lungs
c)
Diaphragm
d)
Trachea
26.

Yeast is a

a)

Multicellular

b)

Carnivore

c)

Anaerobe

d)

Single-celled organism

27.

Lungs are present in the

a)

Chest Cavity

b)

Nasal cavity

c)

Respiration

d)

Diaphragm

28.

During inhalation diaphragm moves

a)

Down

b)

Left

c)

Right

d)

Up

29.

Earthworms skin is

a)

Moist and slimy

b)

Moist and rough

c)

Rough and slippery

d)

Rough and slimy

30.

When we inhale air, it passes through our nostrils into the

a)

Nasal cavity

b)

Chest cavity

c)

Tracheae

d)

Spiracles

31.

Is there difference between breathing and respiration

a)

Yes

b)

No

32.
Anaerobic respiration.....
a)
doesn't require CO2
b)
requires CO2
c)
doesn't require oxygen
d)
requires oxygen
33.
When you breathe, your lungs take in ___ and remove ___. 
a)
air/oxygen
b)
oxygen/carbon dioxide 
c)
carbon dioxide/waste 
d)
waste/air 
34.
The air sacs that are covered with capillaries where gas exchange takes place are called as _________
a)
bronchi
b)
lungs
c)
oxygen
d)
alveoli
35.
Which equation shows the reaction for anaerobic respiration
a)
carbon dioxide + water --> glucose and oxygen
b)
glucose + Oxygen --> lactic acid and energy
c)
glucose + oxygen --> carbon dioxide and water and energy
d)
glucose --> lactic acid and energy
36.

When breakdown of glucose occurs with the use of oxygen it is called

a)

aerobic respiration

b)

anaerobic respiration

c)

cellular respiration

d)

anaerobes

37.

In the cells Oxygen is used to break down

a)

glucose into carbon di oxide

b)

Glucose into carbon di oxide and water

c)

water into carbon di oxide

d)

carbon di oxide into water

38.

During heavy exercise when supply of oxygen to our muscles is insufficient food breakdown is by

a)

anaerobic respiration

b)

aerobic respiration

c)

cellular respiration

39.

Why plants become wilt?

a)

Less water evaporate from the plants

b)

The plant loss excessive amount of water through transpiration

c)

The stomata of the plants are closed

d)

The weather are cool.

40.

Which of the following indicates the pathway of water through a plant?

a)

root hair cell --> xylem --> stomata

b)

stomata --> root hair cell --> xylem

c)

xylem --> stomata --> root hair cell

41.
_______ are tubes that carry nutrients to other parts of the plant. 
a)
stomata 
b)
roots 
c)
xylem 
d)
xylophone 
42.
The plant tissue that carries food materials DOWNWARD from the leaves to the rest of the pant is the ______.
a)
Phloem
b)
Stomata
c)
Chlorophyll
d)
Xylem
43.
Vascular tissue that transports water and minerals UPWARDS from a plant's roots is know as ______.
a)
Chlorophyll
b)
Phloem
c)
Stomata
d)
Xylem
44.
Transpiration is
a)
the movement of water through a plant from the roots up the stem
b)
the loss of water from the leaves of a plant by the process of evaporation
c)
the flow of water into plant roots by osmosis from the soil
d)
the process of minerals and sugars moving through plant veins
45.

Root hairs help in absorption of water by

a)

increasing the surface area

b)

decreasing the surface area

c)

holding the plant in the soil

d)

none of the above

46.
The main function of the circulatory system is 
a)
To give the body structure and support
b)
Excrete waste
c)
transport blood, nutrients, and gases throughout the body
d)
to transport messages from the body to the brain
47.
White blood cells
a)
allow for gases to exchange
b)
give blood its color
c)
fight infection and disease
d)
help clot blood
48.
Platelets 
a)
allow for gases to exchange
b)
give blood its color
c)
fight infection and disease
d)
help clot blood
49.
What part of blood is responsible for carrying wastes, nutrients, and minerals?
a)
Red Blood Cells
b)
White Blood Cells
c)
Platelets
d)
Plasma
50.
What is the largest artery in the human body called?
a)
Superior Vena Cava
b)
Aorta
c)
Inferior Vena Cava
d)
Pulmonary Artery
51.
Identify
a)
Left atrium
b)
Right atrium
c)
Left ventricle
d)
Right ventricle
52.
The smallest type of blood vessel is the:
a)
nerve
b)
vein
c)
capillary
d)
artery
53.

Recall that the movement of food in the phloem is called.

a)

Translocation

b)

Transpiration stream

c)

Evaporation

d)

Respiration

54.
What is the purpose of antibodies?
a)
To pump lymph through the vessels
b)
To create lymph
c)
To fight infection
d)
To remove old red blood cells
55.

All organisms need food, ________, and water for survival.

a)

Oxygen

b)

Shelter

c)

Carbon Dioxide

d)

All of these

56.

Which of the following are parts of the heart?

a)

Right Auricle

b)

Left ventricle

c)

Tricuspid Valve

d)

Cerebrum

57.

The red pigment in blood is called

a)

Plasma

b)

Arteries

c)

Haemoglobin

58.

The process of removal of unwanted, harmful, and toxic substances in our body is called excretion system.

a)

True

b)

False

59.

Is this statement true/false?-

" Dialysis is the process of filtering blood through an artificial process when a person's kidney stops working due to an injury or malfunctioning"

a)

False

b)

True

c)

Can't say

60.

Which part in this diagram absorbs water from soil?

a)

ROOT HAIR

b)

ROOT CAP

c)

REGION OF ELONGATION

d)

MERISTEMATIC REGION

61.

Which type of reproduction envolves one parent

a)

Asexual

b)

Sexual

c)

None of these

d)

Both of these

62.

Vegetative propagation is a type of sexual reproduction. True/False

a)

True

b)

False

63.

Vegetative propagation in potato takes place by

a)

Leaves

b)

Stem

c)

Root

d)

Seeds

64.

In which of the following plants buds are present on the margins of leaves?

a)

Bryophyllum

b)

Touch me not

c)

Chandan

d)

Neem

65.

In yeasts reproduction occurs by:

a)

Fragmentation

b)

Budding

c)

Spore formation

d)

Vegetative propagation

66.

Seeds of drumstick and maple are carried to long distances by wind because they possess:

a)

winged seeds

b)

large and hairy seeds

c)

long and ridged fruits

d)

spiny seeds

67.

Pollination refers to the:

a)

transfer of pollen from anther to ovary

b)

transfer of male gametes from anther to stigma

c)

transfer of pollen from anther to stigma

d)

transfer of pollen from anther to ovule

68.

What is fertilization?

a)

Fusion of male and female gametes

b)

Fusion of pollen and female gametes

c)

Fusion of pollen and male gametes

d)

Fusion of male and male gametes

69.

Algae reproduces through :

a)

Budding

b)

Fragmentation

c)

Spore formation

d)

Vegetative propagation

70.

Reproduction is

a)

The process of giving birth to young ones by their on kind

b)

Process of breathing in air

c)

Process of digesting food

d)

Process of excreting wastes

71.
Which is true about Asexual reproduction?
a)
Insects are needed to transfer pollen.
b)
New plants grow from seeds. 
c)
Offspring are genetically identical to their parent.
d)
Two types of gametes are involved. 
72.
The male part of the flower is________
a)
pistil
b)
sepal
c)
ovaries
d)
stamen
73.
The pollen grains are found in this part of the stamen.
a)
anther
b)
style
c)
pistil
74.
The enlarged base of the pistil that stores the eggs of the plant is the ___.
a)
ovary
b)
ovule
c)
stigma
d)
style
75.
Brightly colored parts of flowers that attract insects.
a)
petals
b)
pistils
c)
stamen
d)
filaments
76.
They enclose the egg cells inside the ovaries.
a)
ovules
b)
anther
c)
seeds
d)
stamen
77.
The female part of a flower is
a)
pistil
b)
stamen
c)
filament
d)
sepal
78.
Fertilization is the process by which an 
a)
egg and pollen combine
b)
embryo grows into a plant
c)
animal carries pollen between plants
79.

Why do living things reproduce?

a)

Living things do not have a choice.

b)

To ensure continuity of their kind.

c)

To ensure consistency in their kind.

80.

What is NOT a characteristic of seeds dispersed by wind?

a)

wing-like structures

b)

feathery

c)

light

d)

Has pods

81.

Which of the following is NOT a characteristic of seeds dispersed by water?

a)

has fibrous husks

b)

has hooks

c)

has waterproof covering

d)

can stay afloat on water

82.

When we prevent overcrowding of plants, we reduce the competition for ________________________________________.

a)

Water, Minerals and Light

b)

Water, Nutrients and Minerals

c)

Water, Nutrients, Light and Minerals

d)

Water, Light and Space

83.

Which is NOT a characteristic of seeds dispersed by animals?

a)

Fruits or seeds have hooks

b)

Fruits are fleshy and juicy

c)

Fruits have trapped air in their husks

d)

Seeds are passed out through animal's droppings

84.

Which of the following consists of only parts of the female parts of the flower?

a)

style, ovary, anther, pollen grain

b)

anther. style, ovary, stigma, egg cell

c)

egg cell, male reproductive cell, ovule

d)

ovule, ovary, style, stigma, egg cell

85.

Which of the following is describes Self-Pollination?

a)

Pollen grains are transferred from anther to stigma of another flower.

b)

Pollen grains are transferred from filament to stigma of the same flower.

c)

Pollen grains are transferred from anther to stigma of the same flower.

d)

Pollen grains are transferred from stigma to anther of the same flower.

86.

Root, stem and leaves are called-

a)

Sexual parts

b)

Vegetative parts

87.

When a plant reproduces by its vegetative parts it is called-

a)

Asexual reproduction

b)

Sexual reproduction

88.

The roots of this plant can give rise to a new baby plant.

a)

Bryophyllum

b)

Sweet potato

c)

Sugarcane

89.

Stem cutting is a common method of artificial vegetative propagation in which plant?

a)

Rose

b)

Jasmine

c)

Blueberry

d)

Apple

90.

Flowers become fruits, which bear seeds. The seeds germinate to give new plants. Name this type of reproduction.

a)

Asexual reproduction

b)

Sexual reproduction

c)

Vegetative propagation

91.

The bouncing of light by any smooth surface, like a mirror, is called

a)

Refraction

b)

Galvanisation

c)

Reflection

d)

None of these

92.

Due to the reflection of light, the impression of an object formed in a mirror is called the ___ of the object

a)

Image

b)

shadow

c)

Light

93.

As the distance of the object from the mirror increases, the distance of the image also ___.

a)

Decreases

b)

Increases

c)

It remains the same

d)

none of these

94.

Lens used in spectacles for correction of defects of vision is

a)

Always concave

b)

Concave or convex

c)

Lens of different shape

d)

Always convex

95.

An inverted image can be seen in a convex mirror,

a)

under no circumstances

b)

when the object is very far from the mirror

c)

when the object is at a distance equal to the radius of curvature of the mirror

d)

when the distance of the object from the mirror is equal to the focal length of the mirror

96.

An object of length 5 cm is placed at a distance of 20 cm in front of a plane mirror. The size and position will be

a)

5 cm high and 20 cm behind the mirror

b)

5 cm high and 20 cm in front of mirror

c)

5 cm high and 10 cm behind the mirror

d)

3 cm high and 20 cm behind the mirror

97.

Latha is observing her image in a plane mirror. The distance between the mirror and her image is 6 m. If she moves 2m towards the mirror then the distance between latha and her image will be

a)

8 m

b)

4 m

c)

10 m

d)

5 m

98.

If you are standing 2m away from a plane mirror the distance between you and your image are

a)

2m

b)

4m

c)

6m

d)

8m

99.

Convex lens is also called as

a)

Diverging lens

b)

Converging lens

c)

Plane lens

d)

Power lens

100.

What kind of image formed by concave lens?

a)

Virtual

b)

Real

c)

Both

d)

None

101.

Which of the following always diverge light rays?

a)

Convex mirror and plane mirror

b)

Concave lens and convex mirror

c)

Concave mirror and convex lens

d)

Concave lens and convex mirror

102.

Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size, whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli respectively are

a)

plane mirror and concave mirror

b)

convex mirror and plane mirror

c)

plane mirror and convex mirror

d)

concave mirror and convex mirror

103.

Which of the following would you prefer to use while reading small letters found in a dictionary?

(a) A convex lens

(b) A convex mirror

(c) A concave lens

(d) Either (a) or (b)

a)

A

b)

B

c)

C

d)

D

104.

A virtual image

(a) can be formed on the screen

(b) cannot be formed on the screen

(c) is formed only by a plane mirror

(d) is formed only by the convex mirror

a)

a

b)

b

c)

c

d)

d

105.

An erect and enlarged image can be formed by

a)

(a) only a convex mirror

b)

(b) only a concave mirror

c)

(c) only a plane mirror

d)

(d) Both convex and concave mirrors

106.

Which one shows lateral inversion?

(a) Plane mirror

(b) Convex mirror

(c) Concave mirror

(d) All of these

a)

a

b)

b

c)

c

d)

d

107.

The inner surface of a steel spoon acts as a ………………….. mirror.

a)

plane mirror

b)

convex mirror

c)

concave mirror

d)

convex lens

108.

The image which is obtained on a screen

a)

upright

b)

impression

c)

virtual image

d)

real image

109.

You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either

a)

concave mirror or convex mirror

b)

concave mirror or convex lens

c)

concave mirror or concave lens

d)

concave lens or convex lens

110.

You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from

a)

both concave lens and convex lens

b)

both concave mirror and convex mirror

c)

both convex mirror and convex lens

d)

both convex mirror and concave lens

111.

A smooth shining surface, which rebounds the light back in same or in different direction, is called

a)

Mirror

b)

Incident ray

c)

Lens

d)

Idealisation

112.

The splitting of white light into its seven constituent colours is called

a)

refraction

b)

dispersion

c)

deviation

d)

reflection

113.

What makes objects visible ?

a)

the absorption of light by objects

b)

the reflected light from the object

c)

the total internal reflection taking place in an object

114.

sunlight called white light consits of __________________

colours

a)

1

b)

5

c)

0

d)

7

115.

This situation shows that

a)

light travels in a straight line

b)

light is everywhere

c)

light penetrates certain objects

d)

light is produces by the Sun

116.

What conclusion can be made from this investigation?

a)

Light travels in parallel

b)

Light travels in a straight line

c)

Light cannot pass through and opaque object

d)

Light cannot bend

117.

This investigation is carried out to show that

a)

light travels in a straight line

b)

light can be seen through the holes

c)

light penetrates a transparent object

d)

light travels in many ways

118.
mirror
a)
absorbs
b)
reflects 
c)
refracts
119.
rainbow
a)
light is reflected
b)
light is refracted
c)
light is absorbed
120.
When we look into a glass mirror, light...
a)
Bends as it passes through
b)
Bounces back in a random order
c)
Hits the mirror and is absorbed
d)
Bounces back at the same angle it strikes the mirror at
121.
A shiny piece of metal will __________ light.
a)
reflect 
b)
refract
122.
A lens will __________ light
a)
reflect
b)
refract
123.
Which organ of the excretory system stores urine until the body is ready to eliminate it?
a)
ureters
b)
urethra
c)
urinary bladder
d)
urea
124.
Under normal conditions, which of the following substances is found in urine?
a)
blood cells
b)
protein
c)
glucose
d)
urea
125.
What is the main function of the excretory system?
a)
to collect and remove wastes from the body
b)
to strengthen skeletal muscles
c)
to protect the nervous system
d)
to bring oxygen to body cells
126.
Using the picture, what is the function of structure A?
a)
Carries urine away from the kidneys
b)
Stores urine
c)
Eliminates urea, excess water, and some other materials
d)
Carries urine away from body and eliminates it
127.
These organs are responsible for what?
a)
storing urine
b)
storing water
c)
filtering blood
d)
they don't have a particular job 
128.
Urine flows out of the kidneys through narrow tubes called
a)
Gallbladder
b)
Ureter
c)
Nephrons
d)
Urethra
129.
What is #2?
a)
Kidney
b)
Ureters
c)
Bladder
d)
Urethra
130.
What organ is D pointing to?
a)
Ureters
b)
Bladder
c)
Urethra
d)
Kidney
131.

Our body also eliminates waste through the skin.

a)

True

b)

False

132.

Oxygenated means the blood has a lot of....

a)

Oxygen

b)

Carbon Dioxide

133.

Deoxygenated blood means that the blood is low in...

a)

Oxygen

b)

Carbon Dioxide

134.

Veins are blood vessels containing blood going to the heart

a)

True

b)

False

135.

Arteries are blood vessels with blood flowing from the heart

a)

True

b)

False

136.

The blood obtains the oxygen from which organ?

a)

Brain

b)

Lungs

c)

Heart

d)

Stomach

137.

In the body, the superior vena cava receives blood to the heart from

a)

Head

b)

Neck

c)

Upper Limbs

d)

Chest

138.

The purpose of the valves is to keep the blood flowing in the right direction

a)

True

b)

False

139.

After the blood leaves the right atrium, it goes to the...

a)

Right Ventricle

b)

Right Atrium

c)

Left Ventricle

d)

Left Atrium

140.

After the right ventricle, the blood goes through the pulmonary artery to...

a)

Lungs

b)

Heart

141.

In the lungs, the blood gets rid of...

a)

Oxygen

b)

Carbon Dioxide

142.

After the blood gets oxygen from the lungs, it goes through the pulmonary veins to the heart's....

a)

Right Atrium

b)

Left Ventricle

c)

Right Ventricle

d)

Left Atrium

143.

Lastly, the oxygenated blood goes through the ___________ to the rest of the body.

a)

Aorta

b)

Vena Cava

144.

What is the main organ of the circulatory system?

a)

small intestine

b)

bone

c)

lungs

d)

heart

145.
The heart has ___ chambers.
a)
1
b)
2
c)
3
d)
4
146.
arteries, veins, and capillaries are three types of __________
a)
heart valves
b)
blood vessels
c)
cells
d)
veins
147.
What do Red-Blood cells do?
a)
Carry oxygen from the lungs to the body cells and  transport carbon dioxide from the cells back to the lungs
b)
keeps blood flowing in one direction to the heart and prevent blood from flowing backwards
c)
Collects  blood from the capillaries and drain it into the veins
d)
Bring nutriients to the cells and carries away waste materials.
148.

Inhalation occurs when diaphragm moves ____________ and ribs move upward and ______________.

a)

Downward, inward

b)

Upward, inward

c)

Downward, outward

d)

Upward, outward

149.

Path followed by exhaled air is -

a)

Nostrils-->windpipe--> lungs

b)

Lungs--> Nostrils--> windpipe

c)

Nostril --> lungs --> windpipe

d)

Lungs --> windpipe --> nostrils

150.

Insects have air holes or ____________ for respiration.

a)

Spiracles

b)

Nostrils

c)

Lungs

d)

Gills

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