CBSE Class 8 - CH8 - Science - Cell Structure and Functions (MCQs)

Cell Structure and Functions

credits:clker.com

MCQs

Q1: Who discovered cell first time by observing cork?

(a) Alexander Fleming
(b) Robert Hook
(c) Leeuwenhoek
(d) Isaac Newton


Q2: Who is known as father of microbiology?

(a) Alexander Fleming
(b) Robert Hook
(c) Leeuwenhoek
(d) E. Adams


Q3: The structural and function unit of life is called ___.

(a) cell
(b) tissue
(c) organ
(d) organism


Q4: Which of the following cells have irregular shape?

CBSE Class 8 - Science - CH11 - Force and Pressure (MCQs)

Force and Pressure 

(MCQs)

Q1: Opening a door is an example of ._______

(a) Contact force
(b) Non contact force
(c) Spring force
(d) Magnetic force




Q2: What is the cause of change in motion or change in the state of motion?

(a) Pressure
(b) Atmospheric Pressure
(c) Friction
(d) Force


Q3: A charged balloon attaches to a wall because of ______

(a) Muscular force
(b) Electrostatic force
(c) Magnetic force
(d) Gravitational force

CBSE Class 8 - Science - Ch3 - Synthetic Fibres and Fabrics (MCQs)

Synthetic Fibres and Fabrics

Plastics: An Artificial Fibre
image credits:clker.com

MCQs

Q1: The fibres that are obtained from cotton, jute and silk are known as ...

(a) Man made or synthetic fibres
(b) Natural fibres
(c) Artificial fibres
(d) Plastics


Q2: The fibres that are made by human beings are called...

(a) Man-made or synthetic fibres
(b) Natural fibres
(c) Artificial fibres
(d) Plastic


Q3: The natural fibres are made from simple molecule that is known as ...

(a) Polymer
(b) Monomer
(c) Plastics
(d) Cellulose

CBSE Class 8: Science - CH2 : Micro-Organisms - Friend and Foe (MCQs)

Micro-Organisms - Friend and Foe

Microbes: Party in Intestine
credits: openclipart

MCQs

Q1: The process of conversion of sugar into alcohol is known as  ...

(a) Budding
(b) Fusion
(c) Fermentation
(d) Fixation

Q2: What does our body produce to fight the invader when a disease-carrying microbe enters our body?

(a)  Antigens
(b)  Antibodies
(c)  Pathogens
(d)  Antibiotics


Q3: Who discovered Fermentation?

(a)  Edward Jenner
(b)  Alexander Fleming
(c)  Louis Pasteur
(d)  Selman Waksman

CBSE Class 8 - Science - CH1 - Crop Production and Management (MCQs)

Crop Production and Management

MCQs

Q1: The process of loosening and turning the soil is called ______

(a) broadcasting
(b) irrigation
(c) tilling
(d) leveling


Q2: The organic substance obtained from dead plants an animal wastes is _________

(a) Manure
(b) Fertilizer
(c) Irrigation
(d) Agriculture


Q3: Which of the following is not a rabi crop?

(a) Rice
(b) Mustard
(c) Wheat
(d) Barley

CBSE Class 8 - Science - CH 18 - POLLUTION OF AIR AND WATER

POLLUTION OF AIR AND WATER

NCERT Solution, Q & A

Q1: What are the different ways in which water gets contaminated?

Answer: Water gets contaminated in the following ways:

1. Various industrial units dispose off the chemicals in rivers. These chemicals are harmful and poisonous and contaminate water.
2. Water gets contaminated when sewage is disposed off (without any treatment) in rivers.
3. Ground water gets contaminated by harmful insectisides and pestisides sprayed by farmers and it becomes unfit for drinking.

Q2: At an individual level, how can you help reduce air pollution?

CBSE Class 8 - Science - CH 14 - CHEMICAL EFFECTS OF ELECTRIC CURRENT

CHEMICAL EFFECTS OF ELECTRIC CURRENT

NCERT Solutions, Q & A

Q1. Fill in the blanks

Answer:
(a) Most liquids that conduct electricity are solutions of acids, bases and salts.
(b) The passage of an electric current through a solution causes chemical effects.
(c) If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the negative terminal of the battery.
(d) The process of depositing a layer of any desired metal on another material by means of electricity is called electroplating.

Q2. When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection. Can you explain the reason?

CBSE Class 8 - Science - CH13 - Sound

Sound

loud music can seriously
damage your ears
image credits:openclipart

(NCERT Chapter Answers)

Q1. Choose the correct answer :
       Sound can travel through
        (a) gases only
        (b) solids only
        (c) liquids only
        (d) solids, liquids and gases.

Answer: (d) Sound can travel through solids, liquids, and gases as it requires a medium to travel through. Solid, liquid and gas provide the medium for sound to travel. Sound cannot travel in vacuum.

CBSE Class 8 - Science - CH 12 - Friction

Friction

Rolling Friction

NCERT Chapter Solutions, MCQs, Q & A

Q1(MCQ): Friction is a:
(a) contact force
(b) non-contact force
(c) magnetic force
(d) none of these

Answer:  (a) contact force

Q2(NCERT): Fill in the blanks:(a) Friction opposes the _____________ between the surfaces in contact with each other.

CBSE Class 8 - Science - CH 7 - Conservation of Plants and Animals

CONSERVATION OF PLANTS AND ANIMALS

Save Trees Save Life
(image credits:clker.com)

(NCERT Chapter Solutions)

Q1: Fill in the blanks:
Answer:
(a) A place where animals are protected in their natural habitat is called wildlife sanctuary.
(b) Species found only in a particular area is known as Endemic species.
(c) Migratory birds fly to far away places because of  climatic changes.
(d) Information about endangered species is recorded in the Red Data Book.
(e) Reforestation is the restocking of destroyed forests by planting new trees.

Science (Quiz) for CTET, Class 6, 7 and 8

Science (Quiz) 

For CTET (Env. Studies Paper-1), Class 6, 7, 8 and NTSE

Q1: Which of the following is an energy giving food?

(a) Bread

(b) Pulses

(c) Fish

(d) Green Vegetables

CBSE Class 8 - Science - CH11 - Force and Pressure #class8Physics #eduvictors

Force and Pressure

credits:classroomclipart

NCERT Chapter Solutions and Q & A


Q1: Give two examples of situations in which you push or pull to change the state of motion of objects.

Answer:

• A goalkeeper saving a goal.
• Hockey player flicking a ball.

CBSE Class 8 - Science - Coal and Petroleum

Coal and Petroleum

Oil Drilling

(NCERT Chapter Answers and Q & A)


Q1:What are the advantages of using CNG and LPG as fuels?
Answer: The advantages of using CNG and LPG as fuels are:

1. They are used as non-polluting fuels to transport vehicles.
2. CNG is used for power generation and is a cleaner fuel.
3. LPG can be used directly for burning in homes and factories.
4. LPG and CNG has virtually no ash particles left after burning.

Q2:Name the petroleum product used for surfacing of roads.
Answer: Bitumen is the petroleum product used for surfacing of roads.

CBSE Class 8 - Science - Ch4 - Metals and Non-Metals #eduvictors

Metals and Non-Metals

Class 8 - NCERT Chapter Solutions

Q1. Which of the following can be beaten into thin sheets?
(a) Zinc
(b) Phosphorus
(c) Sulphur
(d) Oxygen

Answer: (a) Zinc, as it is a metal. The rest of these are non-metals.

Q2. Which of the following statements is correct?
(a) All metals are ductile.
(b) All non-metals are ductile.
(c) Generally, metals are ductile.
(d) Some non-metals are ductile.

Answer: (c) Generally, metals are ductile.
Mercury (metal) is liquid at room temperature and cannot be drawn into wires. Therefore, it is non-ductile.

Branches of Biology

Eye of Jumping Spider
Photo by Thomas Shahan; Source: Flickr

Branches of Biology

1. Biology: study of  living organisms.

2. Botany:  study of plants.

3. Zoology: study of animals.

4. Morphology: study of internal and external structures of organisms (plants and animals) organs.

5. Histology: study of tissues.

NTSE (Science) Quiz-12/Science & Technology Objective Test (Haryana Board)

Science & Technology Objective Test (Haryana Board)/ 

NTSE Sample Quiz-12 (Science) /Class 8 Science

Q1. Atomic number of sodium is 11 and number of neutrons is 12, then atomic mass will be
(a) 12
(b) 22
(c) 11
(d) 23


Q2: Which original particle of atom contains negative charge?
(a) On nucleus
(b) On proton
(c) On neutron
(d) On electron

NTSE SAT Quiz-10 (Biology)

NTSE SAT Quiz (Biology)

Q1: Chlorophyll is present in which of the following organism?
(a) Bacteria
(b) Protozoa
(c) Fungi
(d) Algae

CBSE Class 8 - Science - Synthetic Fibres and Plastics - NCERT Solutions #eduvictors

Synthetic Fibres and Plastics

NCERT Chapter Solutions and Q & A

Q1: Explain why some fibres are called synthetic?

Answer: Some fibres are called synthetic because they are not made from natural fibres. Instead, they are made by chemical processing of petrochemicals. Synthetic fibres are made up of very large units called polymers. Some of the synthetic fibres are rayon, nylon and acrylon.

MCQs - Science & Technology - Harayana Board Middle School/ NTSE (SAT) Quiz-9/CBSE Class 8

Science & Technology Objective Test -2008 (Haryana Board)/ 

NTSE Sample Quiz-9 (Science) /Class 8 Science

(Good for Class 9 and Class 10  students to brush up their knowledge)

(Total MCQs = 65                                                                                                                              Duration: 1 Hour)

Q1. Some bodies looking like stars, which do not twinkle, are called
(A) Planet
(B) Satellite
(C) Artificial Satellite
(D) Meteorite

Class 8 - Science - CH2 - MIICROORGANISMS : FRIEND AND FOE

NCERT Chapter Solution and other Q & A

Virus
(source:openclipart)

Q1. Fill in the blanks:

Answer:
(a) Microorganisms can be seen with the help of a microscope.
(b) Blue-green algae fix nitrogen directly from air to enhance the fertility of the soil.
(c) Alcohol is produced with the help of yeast.
(d) Cholera is caused by Bacteria.

Q2. Tick the correct answer:
(a) Yeast is used in the production of
(i) sugar 

(ii) alcohol 

(iii) hydrochloric acid 

(iv) oxygen