9th Standard Syllabus & Materials
9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -கற்கண்டு (இலக்கணம்) - தொடர் இலக்கணம், ஆகுபெயர் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -விரிவானம் (துணைப்பாடம்) - தாய்மைக்கு வறட்சி இல்லை! Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் -கவிதை பேழை (செய்யுள்) - மார்கழி பெருவிழா Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உயிருக்கு வேர்-இலக்கணம் - பகுபத உறுப்பிலக்கணம் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil அமுதென்று பேர் - இலக்கணம்-எழுத்து -அளபெடை Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil அமுதென்று பேர்-துணைப்பாடம் - ஆறாம்திணை Important Questions And Answers Study Material - QB365 Set A
Published on: 09/12/2020
9th Standard Science Environmental Science English Medium Free Online Test 1 Mark Questions 2020-2021
Download Tamil Nadu 9th 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.
Which cycie involves transpiration?
Water cycle
Nitrogen cycle
Carbon cycle
All the above
2.
The amount of CO2 present in the atmospheric air is _______________.
0.318%
0.383%
21%
78%
3.
Which part of plant consisting Nitrogen fixing bacteria?
Roots
Stems
Leaves
All the above
4.
Biotic components include _______________.
All living organism
Light, temperature etc.
Water, mineral and gases
Self nourishing green plants
5.
World water day is celebrated every year on ____________.
August 12
22nd March
June 5
July 10
6.
Deforestation generally decrease ______________.
Rainfall
Global warming
Soil erosion
Drought
7.
How much percentage of Nitrogen consist in Earth's atmosphere?
25%
12%
92%
78%
8.
Which of the following is one of the strategies to conserve water?
Water recycling
Increasing the number of bore wells
Using large overhead water tanks
Watering the plants using hose
9.
In some xerophytes, leaves are modified into spines as an adaptation ________________.
to reduce transpiration rate
to store water
to reduce consumption of water
all of the above
10.
Increased amount of ___________ in the atmosphere, results in greenhouse effect and global warming
carbon monoxide
sulphur dioxide
nitrogen dioxide
carbon dioxide
1.
(a)
Water cycle
2.
(a)
0.318%
3.
(a)
Roots
4.
(a)
All living organism
5.
(b)
22nd March
6.
(a)
Rainfall
7.
(d)
78%
8.
(a)
Water recycling
9.
(a)
to reduce transpiration rate
10.
(d)
carbon dioxide
9th Standard Syllabus & Materials
9th Standard
TN 9th Tamil உள்ளத்தின் சீர் - திருக்குறள் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் - மணிமேகலை Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உள்ளத்தின் சீர் - ஏறு தழுவுதல் Important Questions And Answers Study Material - QB365 Set A
NEW9th Standard
TN 9th Tamil உயிருக்கு வேர் - தண்ணீர் Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 9th Standard Subjects
Tamilnadu Stateboard Standards
