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Class_8_Science Quiz_2

Total questions: 175

Worksheet time: 2hrs 11mins

Name
Class
Date
1.

The cut of 'wool coat' of a sheep along with the thin layer of skin is called

a)

Grease

b)

Fleece

c)

Wool

d)

Burrs

2.

The silkworm spins cocoon in the pattern of

a)

Zero

b)

1

c)

8

d)

6

3.

The bacterium by which the people working in wool industry get infected is

a)

Rhizobium

b)

Anthrax

c)

Streptococcus

d)

Bacillus

4.

In which of the following process new offspring with special characters is produced by selecting parents

a)

Reeling

b)

Selective breeding

c)

Separating

d)

Rearing

5.

Which component is present in silk fibre

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Fats

6.

The following pictures show the particles of a substance in different states. All of the pictures show the same substance. Which is most likely a solid?

a)
b)
c)
d)
7.

What form of energy cooks food in a solar cooker?

a)

chemical energy

b)

electrical energy

c)

light energy

d)

mechanical energy

8.

What is the atomic number of oxygen?

a)

5

b)

Sandwich

c)

8

d)

17

9.

What was the first animal sent into space?

a)

Alfred the monkey

b)

Laika the dog

c)

Ursula the fish

d)

Sandwich

10.

How long does it take for light to get from the Sun to the Earth?

a)

150 million years

b)

10 seconds

c)

8 minutes

d)

Sandwich

11.

Which particle is the most porous and allows for the most water to travel between them?

a)

silt

b)

sand

c)

clay

d)

loam

12.

This term indicates the relative content of particles of various sizes, such as sand, silt and clay in the soil.

a)

texture

b)

type

c)

pH

d)

nutrient content

13.

The leaves of a plant gets orange and yellow from the inside out due to a lack of what element?

a)

Phosphorus

b)

Potassium

c)

Nitrogen

d)

Nitrogen and Phosphorus

14.
What measurement are we finding when we use a graduated cylinder?
a)
mass
b)
volume
c)
length
d)
weight 
15.

Dry cleaning" of clothes means ___________

a)

putting out the clothes to dry in the sun

b)

using a liquid other than water to clean the clothes

c)

using water vapour to clean the clothes

d)

using warm air to clean the clothes

16.

Morning dew is an example of which portion of the water cycle?

a)

transpiration

b)

condensation

c)

evaporation

d)

precipitation

17.

The food or chemical energy source made by plants through photosynthesis is:

a)

water

b)

glucose

c)

sunlight

d)

carbon dioxide

18.

The inner wall of small intestine have millions of small finger like projection called

a)

villi

b)

trachae

c)

appendix

d)

oesophagus

19.

Fat is completely digested in the

a)

stomach

b)

mouth

c)

small intestine

d)

large intestine

20.

The enzymes present in the saliva convert

a)

(a) fats into fatty acids and glycerol.

b)

(b) starch into simple sugars.

c)

(c) proteins into amino acids.

d)

(d) complex sugars into simple sugars.

21.

Indicator is a substance which shows different colours in acidic and basic solutions.

a)

True

b)

False

22.

In the absence of which of the following will photosynthesis not occur in leaves?

a)

vacuole

b)

stomata

c)

chlorophyll

d)

cytoplasm

23.

The acid present in the stomach

a)

(a) kills the harmful bacteria that may enter along with the food.

b)

(b) protects the stomach lining from harmful substances.

c)

(c) digests starch into simpler sugars.

d)

(d) makes the medium alkaline.

24.

Two organisms are good friends and live together. One provides shelter, water, and nutrients while the other prepares and provides food. Such an association of organisms is termed as

a)

saprophyte

b)

parasite

c)

autotrophs

d)

symbiosis

25.

Sodium hydroxide turns blue litmus red.

a)

True

b)

False

26.

Which of the following raw material is available in the air for photosynthesis?

a)

oxygen

b)

carbon dioxide

c)

nitrogen

d)

hydrogen

27.

Water from the undigested food is absorbed mainly in the

a)

stomach

b)

foodpipe

c)

small intestine

d)

large intestine

28.

Tooth decay is caused by the presence of a base.

a)

True

b)

False

29.

Boiling water is an example of what two types of heat transfer

a)

Conduction and Radiation

b)

Conduction and Convection

c)

Radiation and Convection

30.
Hot coffee is stirred with a spoon; the spoon gets hot due to
a)
conduction
b)
convection
c)
radiation
31.

Manure is added , when the soil is too ...................................

a)

Acidic

b)

Basic

c)

Neutral

d)

None of these

32.

Common salt is

a)

Acidic

b)

Basic

c)

Neutral

d)

None of the snove

33.

Milk of Magnesia is used as an _------.

(a)  

34.

Lime water turns

a)

Blue litmus red

b)

Red litmus blue

c)

No change

35.

Neutralisation is a reaction between

a)

Acid and base

b)

Acid and a neutral substance.

c)

Two acids

d)

Two bases

36.

Sting of Ant contains _-----.

(a)  

37.

The taste of acid is ---- and taste of base is -----.

(a)  

38.

The plant from which litmus is extracted is called -----.

(a)  

39.

Turmeric turns red with----.

(a)  

40.

China rose solutions turn_-------- with acid and turns -------- with base.

(a)  

41.

The acid present in tamarind is

a)

Oxalic acid

b)

Tartaric acid

c)

Formic acid

d)

Acetic acid.

42.

The gas given out during burning is ---------.

(a)  

43.

The metal used in galvanisation

a)

Copper

b)

Bronge

c)

Zinc

d)

Chromium

44.

The chemical name of rust is-------.

(a)  

45.

When magnesium ribbon burns in air _--------- is formed

(a)  

46.

Copper sulphate + iron = ------- + ----------.

(a)  

47.

Lime water turns milky due to the formation of ---------.

(a)  

48.

The conditions required for rusting are _-------- and ---------

(a)  

49.

______ takes in food by the use of pseudopodia.

a)

Goat

b)

Tiger

c)

Amoeba

d)

Human

50.

The inner walls of the stomach secrete _________.

a)

Mucus & hydrochloric acid

b)

Bile

c)

Lime

d)

Salt

51.

______secretes pancreatic juice.

a)

Liver

b)

Brain

c)

Pancreas

d)

Skin

52.

The ___ helps in mixing saliva with food.

a)

Heart

b)

Stomach

c)

Nose

d)

Tongue

53.

The Digested food is absorbed by____.

a)

Small Intestine

b)

Large Intestine

c)

Lungs

d)

Brain

54.

____ is the largest gland in our body.

a)

Skin

b)

Hand

c)

Liver

d)

Leg

55.

Amoeba digests its food in the ____.

a)

Food vacuole

b)

Stomach

c)

Liver

d)

Intestine

56.

Digestion starts from _____.

a)

Mouth

b)

Stomach

c)

Liver

d)

Ribs

57.

Mostly grass eating animals are called____.

a)

Carnivore

b)

Omnivore

c)

Ruminants

d)

Scavenger

58.

Liver secrets _____.

a)

Acid

b)

Bile Juice

c)

Base

d)

Water

59.

The process of breaking down of food is called__.

a)

Digestion

b)

Ingestion

c)

Excretion

d)

Respiration

60.

The process of food intake is known as ______.

a)

Excretion

b)

Calculation

c)

Respiration

d)

Ingestion.

61.
What is the finger-like projections found in the digestive system called?
a)
Protozoa
b)
Villi
62.

The piercing and tearing teeth is called

a)

incisor

b)

Canine

c)

Pre-molar

d)

Molar

63.

Choose the correct order after reading the statement below.


Digestion is a complex process involving:

a)

Ingestion, Absorption, Digestion, Assimilation, Egestion

b)

Ingestion, Digestion, Assimilation, Absorption, Egestion

c)

Ingestion, Digestion, Absorption, Assimilation, Egestion

d)

Ingestion, Absorption, Assimilation, Digestion, Egestion

64.

The mode of feeding of the mosquito_____.

a)

Chewing

b)

Cuddling

c)

Scraping

d)

Sucking

65.

In _____ most of the nutrients are absorbed by the small intestine.

a)

Lotus plant

b)

Rosemary

c)

Human beings

d)

Ant

66.

The enzymes present in the saliva convert

a)

fats into fatty acids and glycerol.

b)

starch into simple sugars.

c)

proteins into amino acids.

d)

complex sugars into simple sugars.

67.
The smallest type of blood vessel is the:
a)
nerve
b)
vein
c)
capillary
d)
artery
68.

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

a)

Translocation

b)

Transpiration stream

c)

Evaporation

d)

Respiration

69.
What is the largest artery in the human body called?
a)
Superior Vena Cava
b)
Aorta
c)
Inferior Vena Cava
d)
Pulmonary Artery
70.
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
71.
What do we call the layers of soil?
a)
Deposits
b)
Horizons
c)
Minerals
d)
Rocks
72.

Cyclones of American continent are called typhoons.

a)

True

b)

False

73.

A dark funnel shaped cloud that reaches from the sky to the ground is

a)

Hurricane

b)

Tornado

c)

Typhoon

d)

Thunderstorm

74.

Which of the following is not a type of silk?

a)

Mulberry silk

b)

Tassar silk

c)

Mooga Silk

d)

Moth Silk

75.

Which of the following is not a method of heat transfer?

a)

Conduction

b)

Induction

c)

Covection

d)

Radiation

76.

Identify the process:

a)

Shearing

b)

Scouring

c)

Combing

d)

Sorting

77.

Sodium hydroxide and Hydrochloric acid reacts to form

a)

Sodium Chloride

b)

Sodium

c)

Hydrogen gas and Chlorine gas

d)

Sodium hypochlorite

78.

How crystals of pure substances are formed?

a)

Crystallization

b)

Chromatography

c)

Peptization

d)

All of the above

79.

Which of the following is generally not predicted in daily weather report?

a)

Temperature

b)

Pressure

c)

Humidity

d)

Rainfall

80.

4.Plant remove excess water in the form of vapour by the process of (a)  

81.

5.The process of inhalation and exhalation of air is important to the (a)   process.

82.

10. Which of the following is a food factory of a plant?

a)

root

b)

shoot

c)

leaf

d)

stem

83.

12. Which of the following protects the flower in the bud state?

a)

sepal

b)

petal

c)

leaf

d)

stem

84.

15. Animals having backbone in their body are called (a)  

85.

16. Hard covering of a snail is called (a)  

86.

17. The phylum of microorganism is (a)  

87.

18. The animals having cylindrical and unsegmented body are kept in the phylum (a)  

88.

19. Which one of the following animals belongs the phylum Arthropoda?

a)
b)
c)
d)
89.

20. Which one of the following is kept in the phylum Aschelminthes?

a)
b)
c)
d)
90.

21. What is the locomotory of the hydra called?

a)

setae

b)

tentacle

c)

flagellum

d)

cilia

91.

22. Which one the following belong to the phylum Mollusca?

a)

octopus

b)

crayfish

c)

hydra

d)

sea anemone

92.

22. Which one has no tissue?

a)
b)

crayfish

c)

jellyfish

d)

spongilla

93.

………….do not have chlorophyll and cannot

perform photosynthesis.

a)

Lotus

b)

Fungi

c)

Cactus

94.

Cactus said- My fleshy, green part is a leaf

a)

True

b)

False

95.

The gradual changes which occur in the body parts and in the behavior of organism to adjust with their surrounding is called ---------------------

a)

Classification

b)

Adaptation

c)

oxidation

96.

Lizards uses its ----------------- for creeping.

a)

Muscles

b)

legs

c)

tongue

97.

The method of binomial nomenclature was suggested by Darwin

a)

TRUE

b)

FALSE

98.

_____ adapt to any kind of habitat

a)

Insects

b)

Birds

c)

Fox

99.

Long ears are seen in____

a)

Carnivores

b)

Herbivores

c)

None of the above

100.

Cuscuta have___

a)

Fibrous roots

b)

Tap roots

c)

Haustorial roots

101.

Substances which are bitter in taste and feel soapy in texture are known as

a)

Bases

b)

Acid

102.

Special type of substances are used to test whether a substance is acidic or basic. These substances are known as

a)

Indicators

b)

Gudhal

c)

None of the above

103.

Identify the image.

a)

Fungus

b)

Lichens

c)

Plant

104.

Acids turn ____________ and Bases turn_____________.

a)

Both turn red litmus blue

b)

Blue litmus red, Red litmus blue

c)

Both turn blue litmus red

d)

No change

105.

An acid and a base neutralise each other and form __________

a)

Remains the same

b)

Chemical substance

c)

Salt

d)

None of the above

106.

The cell is enclosed by thin outer body known as

a)

Nucleus

b)

Cell membrane

c)

Stomata

d)

Cytoplasm

107.

Cuscutta is the example of-

a)

Parasite

b)

Insectivorous Plants

c)

Saprotrophs

d)

Host

108.

The process of Photosynthesis produces

a)

Carbon Dioxide

b)

Nitrogen

c)

Oxygen

d)

Hydrogen

109.

Ultimate source of energy for all living organisms is

a)

Plants

b)

Atmosphere

c)

Earth

d)

Sun

110.

Foods synthesized in the process of Photosynthesis by plants is stored as

a)

Starch

b)

Protein

c)

Vitamins

d)

Fats

111.

Which of the following is a parasite

a)

Fungus

b)

Cuscuta

c)

Mushroom

d)

Bacteria

112.

Which of the following is not necessary for photosynthesis

a)

Chlorophyll

b)

Carbon dioxide gas

c)

Oxygen

d)

Water

113.

Which plant part collects the sun's energy and makes food?

a)

Leaf

b)

Stem

c)

Roots

d)

Flower

114.

Leaves absorb CO2 through...

a)

mouth.

b)

stomata.

c)

nose.

115.

What is the equation for photosynthesis

a)

Carbon dioxide + water sunlight + chlorophyll = glucose + oxygen

b)

Glucose + water + sunlight + oxygen = carbon dioxide

116.

What protects Stomata and helps it in opening and closing?

a)

Guard Cells

b)

Leaf

c)

Stem

d)

Carbon Dioxide

117.

Organisms which prepare food for themselves using simple naturally available raw materials are referred to as

a)

heterotrophs

b)

autotrophs

c)

parasites

d)

saprophytes

118.

The device used to close or open an electric circuit is

a)

switch

b)

Ammeter

c)

Voltmeter

d)

Resistance

119.

Electric bulb converts electrical energy into

a)

sound energy

b)

mechanical energy

c)

light energy

d)

Magnetic energy

120.

The safety device used for electrical appliances is

a)

resistance

b)

Fuse

c)

Connecting wire

d)

None of these

121.

A coil refers to

a)

an electric wire

b)

a fuse

c)

a wire twisted in the form of a circle

d)

None of these

122.

In an electric bell, which of these gets attracted to the electromagnet?

a)

the hammer

b)

the soft iron strip

c)

the screw

d)

None of these

123.

An electric circuit is a closed path in which current flows.

a)

True

b)

False

124.

Identify the circuit given here.

a)

Close circuit

b)

Open circuit

125.

When you breathe, your lungs take in ___ and remove ___.

a)

air/oxygen

b)

oxygen/carbon dioxide

c)

carbon dioxide/waste

d)

waste/air

126.

. 

Which of the following option presents the passage of air from outside to lungs?

a)

nostril, trachea, nasal cavity, lungs, bronchi

b)

nasal cavity, trachea, lungs, nostril, bronchi

c)

lungs, bronchi, nasal cavity, trachea, nostril

d)

Nostril, nasal cavity, trachea, bronchi, lungs

127.

Which equation shows the reaction for anaerobic respiration?

a)

carbon dioxide + water --> glucose and oxygen

b)

glucose + oxygen --> carbon dioxide and water and energy

c)

glucose --> lactic acid and energy

d)

glucose + Oxygen --> lactic acid and energy

128.

Q. 

Gills of a fish are equipped with blood vessels to help in the exchange of gases

a)

TRUE

b)

FALSE

129.

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

a)

cellular respiration

b)

aerobic respiration

c)

anaerobes

130.

Cellular Respiration takes place in

a)

anaerobes

b)

ANIMAL

c)

HUMANS

d)

Cells of all organisms

131.

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

a)

NASAL CAVITY

b)

tracheae

c)

chest cavity

132.

Lungs are present in the

a)

Chest Cavity

b)

Diaphragm

c)

Respiration

d)

Nasal cavity

133.

During inhalation diaphragm moves

a)

UP

b)

DOWN

c)

LEFT

d)

RIGHT

134.

From the nasal cavity the air reaches our lungs through the

a)

WIND PIPE

b)

MOUTH

c)

CHEST CAVITY

135.

The food synthesized by plants is stored as

(a)  

136.

In photosynthesis, solar energy is stored by the pigment called

(a)  

137.

fat is completely digested in the

a)

stomach

b)

mouth

c)

small intestine

d)

large intestine

138.

Substances from which an organism derives energy and materials for growth

a)

Feed

b)

Food

c)

Sources

139.

Every year May 28 is celebrated as the _______________.

a)

World Health day

b)

World Nutrition day

c)

World Ozone day

d)

None of the above

140.

Wind pipe is also called _____________.

a)

oesophagus

b)

bronchus

c)

trachea

d)

nasal cavity

141.

In _________, the United Nations General Assembly proclaimed September 16 as the International Day for the Preservation of the Ozone Layer.

a)

1990

b)

1991

c)

1993

d)

1994

142.

Which country was the first to celebrate world tourism day?

a)

England

b)

India

c)

Spain

d)

Italy

143.

Which day promotes preventative measures to reduce the risk of cardiovascular diseases.

a)

World heart Day

b)

World Kidney Day

c)

World Cardio Day

144.

Though frogs have a pair of lungs they can also breathe through their ______________.

a)

nose

b)

heart

c)

liver

d)

skin

145.

Heat from the sun reaches us by the process of _________.

a)

conduction

b)

convection

c)

radiation

d)

all the above

146.

A black body with a rough surface is a_____________.

a)

good reflector and poor absorber of heat

b)

good absorber and good radiator of heat

c)

good absorber and poor radiator of heat

d)

good reflector and poor radiator of heat

147.

Normal temperature of human body is ___________.

a)

37 degree celcius

b)

37 degree fahrenheit

c)

39 degree celcius

d)

39 degree fahrenheit

148.

When is World Heart Day celebrated?

a)

30 th September

b)

28 th September

c)

29 th September

d)

None of the above

149.

20% of Earth's oxygen is produced by the ______________rainforest.

a)

Evergreen

b)

Amazon

c)

Sundarbans

d)

Gir Forests

150.

Dolphins are _______________-

a)

herbivores

b)

autotrops

c)

omnivores

d)

carnivores

151.

रक्त का लाल रंग रक्त में किसकी उपस्थिति के कारण दिखाई देता है-

a)

श्वेत रक्त कणिकाएं

b)

हिमोग्लोबिन

c)

आयरन

d)

उपयुक्त सभी

152.

In amoeba,ingestion of food takes place with the help of false feet called................

a)

Vacuole

b)

Lysosome

c)

Arms

d)

Pseudopodia

153.

Name the process by which the digested food molecules are taken up by the intestine wall and sent to circulatory system.

a)

Assimilation

b)

Digestion

c)

Absorption

d)

Egestion

154.
What does the liver secrets?
a)
Bile
b)
Pancreatic juice
155.

The process of washing of sheared skin with hair in tanks to remove any kind of dust, dirt or grease is called

a)

shearing

b)

reeling

c)

scouring

d)

dyeing

156.

54 km/h = …. m/s

a)

10

b)

20

c)

15

d)

18

157.

1) A superfast train with constant speed covers a distance of 135 km in 1.5 hour. What would be its speed?

a)

120 km/h

b)

100 km/h

c)

105 km/h

d)

90 km/h

158.

1) The basic unit of speed is

a)

Km/min

b)

km/h

c)

m/min

d)

m/s

159.

1) On which effect of an electric current does a fuse work?

a)

Thermal

b)

Physical

c)

Magnetic

d)

Chemical

160.

1) Which type of image is obtained in the plane mirror?

a)

Inverted

b)

Virtual

c)

Real

d)

Magnified

161.

Rain is the ultimate source of water.

a)

true

b)

false

162.

A concave mirror always forms a real image

a)

true

b)

false

163.

There is a coil of nichrome wire in the electric iron

a)

true

b)

false

164.

A speedometer records the speed of the vehicle directly in km/h

a)

true

b)

false

165.

Which day is celebrated as the ‘World Water Day’?

4 lines
166.

Define time period of a simple pendulum.

4 lines
167.

Write uses of the distance-time graph.

4 lines
168.

How many hours are there in a year (non-leap year)?

4 lines
169.

What is a battery?

4 lines
170.

Which type of wire is used in the fuse?

4 lines
171.

which of the following is A parasitic plant with yellow, slender and branched stem.

a)

cascuta

b)

pitcher plant

c)

both

d)

none

172.

Motion of a child on a merry go round is what type of movement?

a)

Movement along a straight line

b)

Oscillatory

c)

Circular

d)

none of these

173.

Yeast is a

a)

Parasite

b)

saprotroph

c)

Symbiont

d)

Autotroph

174.

Separating the grains is done by which process

a)

Winnowing

b)

Handpicking

c)

Pouring

d)

Filteration

175.

What is habitat of animals

a)

The place where animal live

b)

The place where human live

c)

The place where insects lives

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