7th Standard Syllabus & Materials
7th Standard
TN 7th Tamil рокро░рпБро╡роорпН -1 роЗропро▓рпН 1 - роЕроорпБродродрпНродрооро┐ро┤рпН - роТройрпНро▒ро▓рпНро▓ роЗро░рогрпНроЯро▓рпНро▓ Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
TN 7th Tamil рокро░рпБро╡роорпН -1 роЗропро▓рпН 1 - роЕроорпБродродрпНродрооро┐ро┤рпН - роОроЩрпНроХро│рпН родрооро┐ро┤рпН Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
TN 7th English T1 - Poem - Your Space Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
TN 7th English T1 - Prose - A Prayer to the Teacher Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
TN 7th English T1 - Poem - The Listeners Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
TN 7th English T1 - Prose - The Wind on Haunted Hill Important Questions And Answers Study Material - QB365 Set A
Published on: 01/11/2019
Term 2 Changes Around Us
Download Tamil Nadu 7th 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.
_________ is not a chemical change.
Dissolution of ammonia in water
Dissolution of carbon-di-oxide in water
Dissolution of oxygen in water
Melting of polar ice caps
2.
________is an example of a periodic change.
Earthquake
Formation of rainbow in sky
Occurrence of tides in seas
Showering of rain
3.
The chemical change is _______.
water to clouds
growth of a tree
cow dung to bio-gas.
ice-cream to molten ice-cream.
4.
______ of the following are endothermic changes.
Condensation and melting
Condensation and freezing
Evaporation and melting
Evaporation and freezing
5.
When a woolen yarn is knitted to get a sweater, the change can be classified as _______ .
physical change
chemical change
endothermic change
exothermic change
6.
Respiration is a ______ change.
7.
Spoiling of food is a ________ change.
8.
Opening a gas cylinder knob converts _____ fuel into ________ fuel. This is an example of _____ change.
9.
Stretching gold coin into a ring is a ________ change.
10.
Filling up a balloon with hot air is a _____ change.
11.
Tarnishing of silver is an example of endothermic change.
12.
If the chemical properties of a substance remain unchanged and the appearance or shape of a substance changes it is called a periodic change.
13.
A bean plant collecting sunlight and turning it into bean seeds is an example of physical and non-periodic change.
14.
Taking a glass of water and freezing it by placing it in the freezer is a chemical change.
15.
Cutting of cloth is an example of a periodic change.
1.
(d)
Melting of polar ice caps
2.
(c)
Occurrence of tides in seas
3.
(c)
cow dung to bio-gas.
4.
(c)
Evaporation and melting
5.
(a)
physical change
6.
( )
periodic
7.
( )
chemical
8.
( )
liquid, gas, chemical
9.
( )
physical
10.
( )
physical
11.
True
12.
False.
Correct Statement: If the chemical properties of a substance remain unchanged and the appearance or shape of a substance changes it is called a physical change.
13.
False.
Correct Statement: A bean plant collecting sunlight and turning it into bean seeds in an example of chemical change and periodic change.
14.
False.
Correct Statement: Taking a glass of water and freezing it by placing it in the freezer is a physical change.
15.
False
Correct Statement: Cutting of cloth is an example of non-periodic change.
7th Standard Syllabus & Materials
7th Standard
TN 7th English T1 - Supplementary - On Monday Morning Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
TN 7th English T1 - Prose - Eidgah Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
TN 7th Social Science T1 - ECO - Production Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
TN 7th Social Science T1 - GEO - Interior of the Earth Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 7th Standard Subjects
Tamilnadu Stateboard Standards
