7th Standard Syllabus & Materials
7th Standard
TN 7th Tamil பருவம் -1 இயல் 1 - அமுதத்தமிழ் - ஒன்றல்ல இரண்டல்ல Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
TN 7th Tamil பருவம் -1 இயல் 1 - அமுதத்தமிழ் - எங்கள் தமிழ் 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: 13/05/2022
QB365 provides detailed and simple solution for every Book back Questions in class 7 Science Subject. It
will helps to get more idea about question pattern in every book back questions with solution.
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.
A plastic bag dumped in the soil stays without breaking down for 500 years. If a new generation starts in every 30 years, how many generations would it take to see the plastic bag finally broken down?
2.
The Tamil Nadu Government has banned the use of one-time use throwaway plastics. Why do you think this is important?
3.
How do plastics impact animals and the environment?
4.
What kind of fabric is suitable to dress-up and play in the summer?
5.
What does the term biodegradable mean?
1.
It takes 16-17 generations to see the plastic bag finally broken.
2.
i) One-time use plastic are responsible for littering the environment and clogging drains. This leads to stagnation of water which breeds mosquitoes. It results in malaria, dengue and chikungunya.
ii) One time use plastics are not recycled or reused. So it is a good initiative to ban the use of one- time use throwaway plastics.
iii) It reduces negative consequences of plastics on the environment.
3.
i) Plastics do not decompose or biodegrade.
ii) One-time use plastics are responsible for littering the environment and clogging drains.
iii) Standing water breeds mosquitoes which cause malaria, dengue and chikungunya.
iv) Animals confuse plastic for food and eat it by accident.
v) Plastics cannot be digested and stays in intestine leads to harmful diseases.
vi) Microbeads present in household products washed down in drains and end up in soil pollution and water pollution
4.
Natural fibre like cotton fabric is suitable to dress up and play in the summer. Cotton fabrics absorb moisture and allow air circulation making them cool and comfortable to wear.
5.
A material that gets decomposed through if natural processes and action by bacteria is called biodegradable.
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