8th Standard Syllabus & Materials
8th Standard
TN 8th Tamil இயல் 3 - கல்வி கரையில - வினைமுற்று Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - மயங்கொலிகள் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை -பட்டமரம் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - இயற்கையை போற்றுவோம் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 1 - தமிழ் இன்பம் - ஆழிக்கு இணை Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2-ஈடில்லா இயற்கை - திருக்குறள் Important Questions And Answers Study Material - QB365 Set A
Published on: 11/12/2020
8th Standard Science Changes Around Us English Medium Free Online Test 1 Mark Questions 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.
Rusting of iron is a _________ change.
physical
chemical
physical and chemical
neutral
5.
______ is responsible for Global warming.
Carbon di oxide
methane
chlorofluoro carbons
all the above
6.
Dissolved gases like sulphur dioxide, nitrogen oxides in rain water causes______
Acid rain
base rain
heavy rain
neutral rain
7.
Which of the following factor induces electrolysis?
Heat
light
electricity
catalysis
8.
Brine is a concentrated solution of ______.
Sodium sulphate
sodium chloride
calcium chloride
sodium bromide
9.
______ metal undergoes rusting.
tin
sodium
copper
iron
10.
Burning of paper is a______ change.
Physical
chemical
physical & chemical
neutral
1.
(c)
browning
2.
(b)
bio catalysts
3.
(c)
Electrolysis
4.
(b)
chemical
5.
(d)
all the above
6.
(a)
Acid rain
7.
(c)
electricity
8.
(b)
sodium chloride
9.
(d)
iron
10.
(b)
chemical
8th Standard Syllabus & Materials
8th Standard
TN 8th Tamil இயல் 3 - கல்வி கரையில - பாடறிந்து ஒழுகுதல் Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 3-கல்வி கரையில - பல்துறைக் கல்வி Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 3-கல்வி கரையில - புத்தியைத் தீட்டு Important Questions And Answers Study Material - QB365 Set A
NEW8th Standard
TN 8th Tamil இயல் 2 - ஈடில்லா இயற்கை - தமிழர் மருத்துவம் ( நேர்காணல்) Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 8th Standard Subjects
Tamilnadu Stateboard Standards
