8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard роХрогро┐родроорпН роЗропро▒рпНроХрогро┐родроорпН Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard роХрогро┐родроорпН роОрогрпНроХро│рпН Important Questions And Answers Study Material - QB365 Set B
NEW8th Standard
Tamilnadu 8th Standard роХрогро┐родроорпН роОрогрпНроХро│рпН Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
Tamilnadu 8th Standard Social Science рокрпКро░рпБро│ро┐ропро▓рпН - рокрпКродрпБ рооро▒рпНро▒рпБроорпН родройро┐ропро╛ро░рпН родрпБро▒рпИроХро│рпН Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science роХрпБроЯро┐роорпИропро┐ропро▓рпН - роирпАродро┐родрпНродрпБро▒рпИ Important Questions And Answers Study Material - QB365
NEW8th Standard
Tamilnadu 8th Standard Social Science роХрпБроЯро┐роорпИропро┐ропро▓рпН - рокро╛родрпБроХро╛рокрпНрокрпБ рооро▒рпНро▒рпБроорпН ро╡рпЖро│ро┐ропрпБро▒ро╡рпБроХрпН роХрпКро│рпНроХрпИ Important Questions And Answers Study Material - QB365
Published on: 11/12/2020
8th Standard Science Changes Around Us English Medium Free Online Test 1 Mark Questions with Answer Key 2020 - 2021
Download Tamil Nadu 8th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
The brown colour of a cut apple is due to
rusting
rancidity
browning
fermentation
2.
Enzymes and yeasts are called
catalysts
bio catalysts
chemical catalysts
physical catalysts
3.
The chemical reactions carried out by the passage of electricity is called.
Rusting
Thermolysis
Electrolysis
Photolysis
4.
Decomposition of limestone is an example for chemical reaction based on __________
contact
electricity
light
heat
5.
Rusting of iron is a _________ change.
physical
chemical
physical and chemical
neutral
6.
______ is responsible for Global warming.
Carbon di oxide
methane
chlorofluoro carbons
all the above
7.
In Haber’s process of producing ammonia ______ is used as a catalyst.
Nitrogen
hydrogen
iron
nickel
8.
Limestone contains ______ mainly.
Calcium chloride
calcium carbonate
calcium nitrate
calcium sulphate
9.
The pigment responsible for browning of apples is______.
Hydrated iron (II) oxide
melanin
starch
ozone
10.
The burning of matchstick is an example for chemical reaction based on______
Contact in physical states
electricity
light
catalyst
1.
(c)
browning
2.
(b)
bio catalysts
3.
(c)
Electrolysis
4.
(d)
heat
5.
(b)
chemical
6.
(d)
all the above
7.
(c)
iron
8.
(b)
calcium carbonate
9.
(b)
melanin
10.
(a)
Contact in physical states
8th Standard Syllabus & Materials
8th Standard
Tamilnadu 8th Standard Social Science рокрпБро╡ро┐ропро┐ропро▓рпН - рокрпБро╡ро┐рокрпНрокроЯроЩрпНроХро│рпИроХрпН роХро▒рпНро▒ро▒ро┐родро▓рпН Important Questions And Answers Study Material - QB365
NEW8th Standard
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NEW8th Standard
Tamilnadu 8th Standard Social Science рокрпБро╡ро┐ропро┐ропро▓рпН - родрпКро┤ро┐ро▓роХроЩрпНроХро│рпН Important Questions And Answers Study Material - QB365
NEW8th Standard
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Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards
