JAC 12th Biology Important Questions Chapter 16 : झारखण्ड बोर्ड कक्षा 12th सभी विद्यार्थियों के लिए Biology में Chapter 16: Environmental Issues के पिछले वर्षो में जो भी प्रश्न पूछे गए हैं, उनकी चर्चा हम इसमें करेंगे तो इन Important Questions को पढ़ लीजिए.
JAC 12th Biology Important Questions Chapter 16: Environmental Issues
रांची: झारखंड एकेडमिक काउंसिल ( JAC Board) कक्षा JAC 12th Biology Important Questions के पिछले वर्षों के सभी महत्वपूर्ण प्रश्न (important Questions) आपको यहाँ पर बताए जा रहे है, जो बोर्ड परीक्षा 2023 के लिए बहुत महत्वपूर्ण है. अगर आप इन सभी प्रश्नों को याद कर लेते हो तो अवश्य ही आप JAC Board class 12th Biology exam में अच्छे अंक प्राप्त कर सकते हो.
विद्यार्थी इसका उत्तर स्वयं करें। ये सारे प्रश्न आपके परीक्षा (JAC 12th Biology Important Questions For Board Exams) में बार – बार पूछे जा रहे है। इसमें आपको सभी chapter का अलग-अलग पिछले 16 वर्षों के महत्वपूर्ण प्रश्न मिलेंगे। यानि 2006-2020 इसमें आपको ये भी बताया जा रहा है कि कौन से प्रश्न किस तरह से एवं कितने Biology के पूछे जा रहें है.
| Name of Organisation | Jharkhand Academic Council Ranchi |
| Category | Important Question |
| Article | JAC 12th Biology Important Questions |
| State | Jharkhand |
| Question Types | Previous Year & Important Questions |
| Class | 12th(Inter) |
| Stream | Science |
| Subject | Biology |
| Chapter | 16th Chapter |
| Chapter Name | Environmental Issues |
| Telegram | Join Us |
JAC 12th Biology Previous years Important Questions Chapter 16
Chapter 16. Environmental Issues
1 Marks Questions
Q1. What is the water potential of pure water? [JAC2006]
Q2. Name two secondary pollutants.[JAC2007]
Q3. Where jhum cultivation is occurred?[JAC 2009]
Q4. What is meant by Ozone hole?[JAC 2010]
Q5. The water prevention and control of pollution Act was enforced in.(1974/1981) [JAC 2011]
Q6. Which of the following is not an air pollutant?
a) CO
b) CO2
c) CFC
d) Aerosol[JAC2014, 2018]
Q7. Which of the following natural resource is non renewable?[JAC2014]
a) Wildlife
b) water
c) coal
d) forest
Q8. World Environment Day is observed on :-[JAC2014]
a)21 March
b) 7 April
c) 5 June
d) 11 July
Q9. Which is the most polluted river of Jharkhand?[JAC2015, 2018]
a) Damodar
b) Swarna rekha
c) Koyal
d) karo
Q10. Which is Greenhouse gas?
a) H2
b) CH4
c) 02
d) NH3[JAC2015,2017]
Q11. Bhopal gas tragedy is related to which gas leak?[JAC 2016]
a) PAN
b) Smog
c) Methyl isocynante
d) SO 2
Q12. Main cause of extinction of species from tropical area is :-JAC2018]
a) pollution
b) soil erosion
c) deforestation
d) forest fire
Q13. Compressed natural gas (CNG) is :-
a) propane
b) Ethane
c) methane
d) bethane[JAC2019]
Q14. Ozone depletion is caused by ;-
a) CO
b) CFC
c) Heat
d) DDT [JAC2019]
Q15. Which of the following is the cause of skin cancer and high mutation rate ?
a)CO2 pollution
b) CO pollution
c) acid rain
d) ozone depletion[JAC2020]
2 Marks Questions
Q1. Describe Chipko Movement.[JAC2010]
Q2. What is greenhouse effect? [JAC2010]
Q3. Name two harmful effect of “smog” in human? [JAC2013]
Q4. What is biochemical oxygen demand?(BOD) [JAC2013]
Q5. Name two secondary pollutants. [JAC2017]
Q6. What is ozone hole? [JAC 2020]
3 Marks Questions
Q1.What is green house effect? Write the names of two gases affecting green – house effect.[JAC 2006, 2020]
Q2.what is primary and secondary pollutants?Give examples. [JAC2006, 2010]
Q3.What is ‘water Bloom’? [JAC 2008]
Q4.What is ill effects of air -pollution?[JAC2008]
Q5.What is BOD and COD? State their significance.[JAC2008]
Q6.Depict the relative percentage of various greenhouse gases which are responsible for global warming.[JAC 2009]
Q7.Write the merits of big dams or small dams.[JAC2010]
Q8.What are the causes of ‘biodiversity -loss’?[JAC2011]
Q9.Describe eutrophication?[JAC2013]
Q10.Select the correct match in code of 1,2,3 with (a), (b) and (c).[JAC2014]
1.Renewable source of energy (a) solar radiation
2.ultimate source of energy (b) Coal and petroleum
3.Fossil fuel (c) wood and charcoal
Code: 1 2 3
b с a
с а b
a b c
Q11. What is acid rain? [JAC2016]
Q12.What is global warming? Give any two causes responsible for global warming.[JAC2019]
5 Marks Questions
Q1.What is acid rain? How it causes threat to historical monuments. [JAC2006]
Q2.Explain how increase in organic waste in ponds leads to increase in Biological oxygen demand (BOD).[JAC2008]
Q3.What is biomagnification? Explain biomagnification with suitable examples and illustrations. [JAC2009, 2014,2017]
Q4.What is jhum cultivation? How can we curb it?[JAC2010]
Q5.What is Eutrophication? What are it’s effects on aquatic organisms?[JAC2018]
Q6.What is global warming? Discuss the cause and effect of global warming. What measures need to be taken to control global warming? [JAC2020]
Q7.Match the following:-
a) DDT Biological magnification
b) PAN—–> Smog
c) Acid rain —> SO2
d) Global warming—> CO2
e) CO——> carboxy haemoglobin.
f) National Forest policy—–>1988
g) Phytoplankton—->Diatoma
(Jac 2015,2017)
Conclusions
उम्मीद करते हैं या आर्टिकल(JAC 12th Biology Important Questions Chapter 16) आपको पसंद आया होगा अगर आया हो तो कृपया करके अपना प्यारा सा कंमेंट नीचे कर दे उसके साथ ही अधिक अपडेट जानने के लिए हमारे टेलीग्राम ग्रुप में ज्वाइन कर ले.
