12th Standard Syllabus & Materials
12th Standard
TN 12th Computer Applications மின்னணு தரவு பரிமாற்றம் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications மின் - வணிக பாதுகாப்பு அமைப்புகள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications மின்னணு செலுத்தல் முறைகள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications மின் - வணிகம் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications திறந்த மூல கருத்துருக்கள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications வலையமைப்பு வடமிடல் Sample Question Papers Study Material - QB365 Set A
Published on: 05/11/2020
12th Standard Botany - Environmental Issues English Medium Free Online Test One Mark Questions 2020 - 2021
Download Tamil Nadu 12th Standard Biology 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 Biology Test1.
EIA stands for ________________
Ecological Information Analysis
Environmental Information Assessment
Environmental Impact Analysis
Environmental Impact Assessment
2.
Which is not true with respect to prosopis julifiora?
Invasive species native to Mexico
Arrest wind erosion
Absorb hazardous chemical from soil
Decreases O2 content of water bodies
3.
Total number of forestry extension centres in Tamil Nadu is ______________
16
32
18
51
4.
Methane is ________________ times as effective as CO2 at trapping heat.
5
10
20
100
5.
Identify the incorrect statement with regard to Global warming
Leads to species enrichment
Decrease irrigation
Increases vector population
Frequent heat waves
6.
___________ is not a method of waste water treatment.
oxidation ponds
Anaerobic lagoons
Catalytic converter
Anaerobic bioreactor
7.
Deforestation means ______.
growing plants and trees in an area where there is no forest
growing plants and trees in an area where the forest is removed
growing plants and trees in a pond
Removal of plants and trees
8.
9.
Find the wrongly matched pair.
Endemism - Species confined to a region and not found anywhere else.
Hotspots - Western Ghats
Ex-situ Conservation - Zoological parks
Sacred groves - Saintri hills of Rajasthan
Alien sp. Of India - Water hyacinth
10.
Which of the following would most likely help to slow down the greenhouse effect.
Converting tropical forests into grazing land for cattle.
Ensuring that all excess paper packaging is buried to ashes.
Redesigning landfill dumps to allow methane to be collected.
Promoting the use of private rather than public transport.
1.
(d)
Environmental Impact Assessment
2.
(d)
Decreases O2 content of water bodies
3.
(b)
32
4.
(c)
20
5.
(a)
Leads to species enrichment
6.
(c)
Catalytic converter
7.
(d)
Removal of plants and trees
8.
(d)
9.
(d)
Sacred groves - Saintri hills of Rajasthan
10.
(c)
Redesigning landfill dumps to allow methane to be collected.
12th Standard Syllabus & Materials
12th Standard
TN 12th Computer Applications களப்பெயர் முறைமை (DNS) Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications வலையமைப்பு எடுத்துக்காட்டுகள் மற்றும் நெறிமுறைகள் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications கணினி வலையமைப்பு ஓர் அறிமுகம் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Computer Applications PHP-உடன் MySQL-ஐ இணைத்தல் Sample Question Papers Study Material - QB365 Set A
Tamilnadu Stateboard 12th Standard Subjects
Maths
Chemistry
Physics
Biology
Computer Science
Business Maths and Statistics
Economics
Commerce
Accountancy
History
Computer Applications
Biology
Computer Technology
Computer Applications
Computer Science
Business Maths and Statistics
Commerce
Economics
Maths
Chemistry
Physics
Computer Technology
History
Accountancy
Tamil
English
French
Tamilnadu Stateboard Standards
