Class 8 Science Full Syllabus Test

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1) Which was the first fully synthetic fibre?

1 point

Rayon

Acrylic

Polycot

Nylon

Clear selection

2) Which of the following disease and its mode of transmission is not correct?

1 point

TB - air

Cholera - water

Typhoid - air

Rust of wheat - air

Clear selection

3) The slow conversion of dead vegetation into coal is called

1 point

Coal gassification

Carbonisation

Carbonification

Coal formation

Clear selection

4) The process of loosening and turning of the soil is called

1 point

Tilling

Ploughing

Irrigation

Both A & B

Clear selection

5) The world's first and India's first oil well were drilled respectively in

1 point

1858 & 1867

1859 & 1867

1867 & 1859

1759 & 1867

Clear selection

6) If iron nails are placed in zinc sulphate solution , then which of the following reaction would happen?

1 point

No reaction

Displacement reaction

Zinc displaced

Both b & c

Clear selection

7) The substances which have very low ignition temperature and catch fire easily are known as

1 point

Combustible substances

Inflammable substances

Ignitible substances

Fuel

Clear selection

8) Large areas of protected land for conservation of wildlife, plant and animal resources and traditional life of the tribals living in the area is called

1 point

Biosphere

Biosphere reserve

Wildlife sanctuary

National park

Clear selection

9) Every begins their life with a single cell known as

1 point

Zygote

Fertilized egg

Embyo

Both A & B

Clear selection

10) Which is not a property of metals?

1 point

Ductile

Brittle

Sonorous

Lustrous

Clear selection

11) Which is unit of inheritance in living organisms?

1 point

Chromosomes

Heredity

Genes

Nucleus

Clear selection

12) Which of the following is not incorrect?

1 point

Any female bee can lay egg in the beehive

Worker bees maintain the temperature of hive at around 42 °C to incubate the eggs

A queen can lay only 100 - 200 eggs

Fertilized eggs develop into female whereas unfertilized eggs develop into males

Clear selection

13) The speed with which water from the soil surface moves into the ground is known as

1 point

Seeping rate

Infiltration rate

Desertification rate

Moving rate

Clear selection

14) Who have two types of sex chromosomes?

1 point

Human female

A girl

A boy

Both B & C

Clear selection

15) Which of the following is not an endocrine gland?

1 point

Sweat gland

Oil gland

Salivary gland

All of these

Clear selection

16) The hottest part of a flame is______. Which of the given option does not fill right?

1 point

Non luminous zone

Outer part

Blue in colour

None of these

Clear selection

17) Which is not a part of female reproductive system?

1 point

Oviduct

Fallopian tube

Vas defrens

Uterus

Clear selection

18) Rayon is different from synthetic fibres because

1 point

It has silk like appearance

Its fibres can be woven like natural fibres

It is obtained from wood pulp

It was first synthetic fibre

Clear selection

19) A group of cells that perform similar function together forms a structure. This structure does not perform which of the following function?

1 point

Digestion

Assimilation

Absorption

None of these

Clear selection

20) Some animals and plants typically belong to a particular area. These animals and plants are termed respectively as

1 point

Flora and fauna

Fauna and flora

Endemic and endemic

Endemic and extnict

Clear selection

21) A substance which cannot be broken down further by chemical reactions, by cooling, heating or by electrolysis, is called

1 point

Compound

Element

Metalloid

All of these

Clear selection

22) Who discovered the first cell and where he observed these cells?

1 point

Robert Koch, in bark cell

Robert Hooke, in bark cell

Leeuwenhoek, bacterial cell

Robert Hooke, in cork cell

Clear selection

23) Which special plastic is used for non stick coating of cookwares?

1 point

Melamine

Teflon

PET

PVC

Clear selection

24) How many weeks does it take to develop an embryo into chick?

1 point

Clear selection

25) The force due to air in a column of the height of the atmosphere and area 15 cm × 15 cm is nearly equal to force of gravity of an object of mass

1 point

125 kg

225 kg

275 kg

175 kg

Clear selection

26) Which of the following is used to reduce friction?

1 point

Ball bearings

Lubricants

Grease

All of these

Clear selection

27) A book containing records of all the extinct plants and animals is

1 point

Red data book

RDB

Both A & B

None of these

Clear selection

28) How many full grown trees are required to make a tonne of paper?

1 point

Clear selection

29) Which of the following is not an ideal fire extinguisher in case of fire due to oil or electric equipment?

1 point

Baking soda

Sand

Water

None of these

Clear selection

30) Which of the following statement is correct?

1 point

The microbe growing on bread is a fungus

Microorganisms can live hot springs but can't live in ice cold climate

Earthworms are considered as friend of farmers whereas most microbes are considered as enemy of farmers

Microorganisms are used in the preparation of alcohol in the recent years

Clear selection

31) Which of these is not present in fire extinguishers?

1 point

Baking soda

Sodium bicarbonate

Potassium bicarbonate

None

Clear selection

32) Who invented vacuum pump, a pump to extract air out of a vessel?

1 point

Benjamin Franklin

William Nicholson

Robert Constanza

Otto von Guericke

Clear selection

33) What is amber?

1 point

It is a kind of resin

It attracts light objects when rubbed with fur

It is obtained from a tree

All of these

Clear selection

34) Who showed that on electrolysing water, Hydrogen and Oxygen are formed on different electrodes and when?

1 point

Nicholson in 1800

Ostwald in 1753

Singer in 1753

Nicholson in 1753

Clear selection

35) The phenomenon of rainbow is due to

1 point

Inversion of light

Refraction of light only

Dispersion of light

Reflection of light

Clear selection

36) The correct increasing order of force due to friction is

1 point

Rolling, Static, Sliding

Rolling, Sliding, Static

Static, Sliding, Rolling

Sliding, Static, Rolling

Clear selection

37) Which represents the sound of loud-voiced man?

1 point

Option A

Option B

Option C

Option D

Clear selection

38) The process of replenishing the soil with nutrients by growing different crops alternatively is called

1 point

Alternation

Replenishment

Fallow

Crop rotation

Clear selection

39) The natural cause of deforestation does not include

1 point

Forest fire

Severe drought

Procuring land for cultivation

All of these

Clear selection

40) The rearing of animals for animal products at large scale is called

1 point

Animal husbandry

Animal keeping

Animal production

None of these

Clear selection

41) Who has developed knowhow to make earthquake-resistant houses?

1 point

Central Building Research Institute, Roorkee

National Chemical Library, Pune

Advanced Materials and Processes Research Institute, Bhopal

Indian Institute of Chemical Technology, Hyderabad

Clear selection

42) When we press the bulb of dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to

1 point

Pressure of water

Gravity of the earth

Shape of rubber bulb

Atmospheric pressure

Clear selection

43) Nitrogen is not fixed by

1 point

Bacteria

Blue green algae

Lightening

None of these

Clear selection

44) Naphthalene balls used to repel moths are obtained from

1 point

Coke

Coal tar

A compound which is a mixture of 200 substances

Both B & C

Clear selection

45) The cells having nuclear material without nuclear membrane

1 point

are termed eukaryotes

are termed prokaryotes

include Blue Green Algae and Bacteria

Both A and B

Clear selection

46) The best technique for watering fruit plants, gardens and trees where is not wasted at all is

1 point

Traditional system

Sprinkler System

Drip System

Dhekli

Clear selection

47) Which gets embedded in the wall of uterus for further development?

1 point

Embryo

Zygote

Sperm

Foetus

Clear selection

48) Which of the following is not present in the head of safety matches of present days?

1 point

Antimony trisulphide

Potassium chlorate

White phosphorus

Red phosphorus

Clear selection

49) Friction is not desirable in case of

1 point

Gymnast and kabaddi players

Soles of shoes

Treaded tyres of cars

Moving parts of machines

Clear selection

50) The process of transferring of charge from a charged object to the earth is called

1 point

Earthing

Charging

Discharging

Charge transfer

Clear selection

51) Which is incorrect about friction?

1 point

It sometimes supports the motions

It always opposes the relative motion

It always opposes the motion

Both A & C

Clear selection

52) Two mirrors 1 & 2 meet at right angles. A ray of light is incident on one end of the Mirror 1 at angle of 30° with the mirror as shown in the figure. Find the angle of reflected ray with the Mirror 2 when it is reflected from it?

1 point

30°

45°

60°

90°

Clear selection

53) The idea that a number of images are formed when two or more plane mirrors are placed with some some angles in front of each other is used to make an instrument which is useful in making numerous beautiful pattern. Name that instrument.

1 point

Telescope

Microscope

Cassegrain

Kaleidoscope

Clear selection

54) The correct sequence of agricultural practices is

1 point

Sowing, Ploughing, Manuring, Irrigation, Harvesting, Storage

Ploughing, Sowing, Manuring, Harvesting, Irrigation, Storage

Ploughing, Sowing, Manuring, Irrigation, Harvesting, Storage

Ploughing, Manuring, Irrigation, Sowing, Harvesting, Storage

Clear selection

55) Which of the following is not included in natural resources?

1 point

Air & water

Soil

Minerals

None

Clear selection

56) The increase in volume of the dough is due to the production of ___________ gas by the yeast.

1 point

Oxygen

Carbon dioxide

Nitrogen

Mixture of different gases

Clear selection

57) Reproductive age in women starts and ends respectively at

1 point

Menopause and menarche

12 years of age and 50 years of age

Menarche and menopause

Both B and C

Clear selection

58) Choose the incorrect statement.

1 point

The frequency of sound of bird is higher than sound of lion

The audible range of frequencies for human ear is from 20 Hz to 20000 kHz

The loudness of painful sound is above 80 dB

To and fro motion is known as vibration as well as oscillatory motion

Clear selection

59) Which of the following is incorrect regarding cell membrane?

1 point

Plasma membrane allows the movement of substances only inwards

Cell membrane is also known as plasma membrane

The plasma membrane is porous

It is a part of three basic components of cell

Clear selection

60) Correct statement about moon is

1 point

It has light of its own

Moon's surface is dusty and barren

The atmosphere of moon is different from Earth's atmosphere

Moon also revolves around the sun

Clear selection

61) Who represented India on Braille problems in UNESCO?

1 point

Diwakar

Ravindra Jain

Lal Advani

Helen A. Keller

Clear selection

62) The number of pairs of vocal cords and size of vocal cords in men respectively is

1 point

1 & 20 mm

2 & 20 mm

1 & 15 mm

2 & 15 mm

Clear selection

63) The phenomenon of corrosion of monuments by acid rain is known as

1 point

Corrosion

Rusting

Congestion

Marble cancer

Clear selection

64) The correct sequence of planets from Sun is

1 point

Mercury, Jupiter, Earth, Mars, Venus, Saturn, Uranus, Neptune

Mercury, Uranus, Earth, Mars, Venus, Jupiter, Saturn, Neptune

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

None of the above

Clear selection

65) Metals react with acids and produce a gas that burns with pop sound. Identify the gas.

1 point

Hydrogen

Oxygen

Carbon dioxide

Nitrogen

Clear selection

66) Which of the following is correct about adolescence?

1 point

At puberty male sex organ, penis starts producing sperms

All body parts grows at the same rate

Girls grow faster than boys and reach their maximum height earlier than boys

Changes occurring in girls and boys are different

Clear selection

67) The parasite of malaria and its carrier, respectively are

1 point

Anopheles & Aedes

Anopheles & Plasmodium

Plasmodium & Anopheles

Aedes & Anopheles

Clear selection

68) Who showed and when that lightning and the spark from our clothes are essentially the same phenomenon?

1 point

William Nicholson in 1752

Benjamin Franklin in 1752

Benjamin Franklin in 1842

Willian Nicholson in 1842

Clear selection

69) The zones of the boundaries of earth's plates are weak zones where earthquakes are more likely to occur are known as

1 point

Seismic zone

Fault zone

Richter zone

Both A & B

Clear selection

70) Which phenomenon has led to increased chances of floods in coastal areas?

1 point

Greenhouse effect

Global warming

Marble cancer

Deforestation

Clear selection

71) Which of the following about rusting of copper is incorrect?

1 point

A greenish deposit is seen

Rusting of copper takes place when it is exposed to moist air for long

Formula of rust is CuCO3.Cu(OH)2

The rust is brown in colour

Clear selection

72) Ursa major and Orion are respectively used to locate

1 point

Pole star and Sirius

Sirius & Pole star

Alpha Centauri and Venus

Venus and Alpha Centauri

Clear selection

73) Which planet rotates in opposite direction with respect to other planets?

1 point

Uranus

Jupitar

Venus

Both A & C

Clear selection

74) Which of the following is incorrect with respect to owl's eye?

1 point

Less rods than cones

Less cones than rods

Large cornea to allow more light

Both A & C

Clear selection

75) Which is not an Indian satellite?

1 point

INSAT

EDUSAT

IRS

None

Clear selection

76) Observe the given diagram and tick the correct answer.

1 point

The greenish yellow spot is always formed on the positive terminal

It is an example of chemical effect of electric current

It could be useful for identifying the terminals of a cell or battery concealed in a box

None of the above

Clear selection

77) Metals are generally hard. The exception to this statement is

1 point

Sodium

Potassium

Mercury

Both A & B

Clear selection

78) Metamorphosis in frog is controlled by

1 point

Insulin

Adrenaline

Thyroxine

Growth hormone

Clear selection

79) The first cloned animal, Dolly died due to

1 point

Heart disease

Lung disease

Kidney disease

No disease

Clear selection

80) The incorrect statement is

1 point

Petroleum is known as black gold

LPG, petrol, paraffin wax and Kerosene all are constituents of petroleum

Natural gas is a cleaner fuel than LPG

Petroleum is inexhaustible resource

Clear selection

81) Water which is suitable for drinking is called

1 point

Polluted water

Portable water

Filtered water

Municipality water

Clear selection

82) Which is not a conductor of electricity?

1 point

Acids

Bases

Salts

Glucose

Clear selection

83) A pendulum vibrates 50 times in 4 seconds. Find its time period and frequency.

1 point

0.1 s & 10 Hz

0.05 s & 25 Hz

0.25 s & 4 Hz

0.08 s & 12.5 Hz

Clear selection

84) The planet which can be seen in the sky before sunrise or sunset is/are

1 point

Mercury

Venus

Mars

Both A & B

Clear selection

85) Braille system was developed by Louis Braille and its present form was adopted respectively in

1 point

1821 & 1832

1921 & 1932

1821 & 1932

1921 & 1832

Clear selection

86) The process of depositing a layer of any desired metal on another material by means of electricity is known as

1 point

Galvanization

Chemoplating

Electroplating

Rusting

Clear selection

87) The correct match of the given instruments with their sound producing part is (i) Veena (ii) Mridangam (iii) Tabla

1 point

(i) Stretched string (ii) Stretched membrane (iii) Stretched string

(i) Stretched membrane (ii) Stretched membrane (iii) Stretched string

(i) Stretched string (ii) Stretched membrane (iii) Stretched membrane

(i) Stretched string (ii) Stretched membrane (iii) Stretched wire

Clear selection

88) Which of following is always an attractive force?

1 point

Gravitational force

Electrostatic force

Magnetic force

All of these

Clear selection

89) _____ is like a stretched rubber sheet

1 point

Tongue

Inner ear

Cochlea

Eardrum

Clear selection

90) Sound is produced by

1 point

Vocal cords

Vibration

Voice box

String

Clear selection

91) The best season for growing pulses and vegetables is

1 point

Winter season

Rainy season

Kharif Season

Summer season

Clear selection

92) Which is correct about the frictional force due to fluids?

1 point

It is called drag

It depends on the speed of object with respect to the fluid

It depends on the shape of object and nature of the fluid

All of these

Clear selection

93) Which is a state of motion?

1 point

Object at rest

Object in motion

Object with zero speed

All of the above

Clear selection

94) Which constellation seen in the northern sky looks like a distorted W or M?

1 point

Saptarishi

Orion

Ursa minor

Cassiopeia

Clear selection

95) The number of nuclei present in zygote is

1 point

One

Two

Three

Zero

Clear selection

96) The correct one is

1 point

The longer lead of LED can be connected to negative terminal also

LED can glow only when weak current flows through it

Distilled water is a good conductor of electricity

Electric current produces magnetic field

Clear selection

97) Find incorrect match

1 point

Ganga Action Plan - 1985

National Mission for Clean Ganga (NMCG) - 2016

Van Mahotsav - August

Mangalyaan - launched in 2013

Clear selection

98) The number of X chromosomes in male and female respectively is

1 point

1 & 2

2 & 1

1 & 1

2 & 2

Clear selection

99) Choose the correct match

1 point

A - i, B - iii, C - iv, D - ii

A - ii, B - iv, C - i, D - iii

A - iv, B - ii, C - iii, D - i

A - iv, B - ii, C - i, D - iii

Clear selection

100) The fertilization taking place inside of the body of female is

1 point

External fertilization

Internal fertilization

In vitro fertilization

Both A & C

Clear selection

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