Exam (elaborations)
NCERT Solutions for Class 12 Biology Chapter 16
- Course
- Institution
NCERT Solutions for Class 12 Biology Chapter 16
[Show more]
Seller
Follow
Hkane
Reviews received
Content preview
ENVIRONMENTAL ISSUES 113CHAPTER 16
ENVIRONMENTAL ISSUES
MULTIPLE-CHOICE QUESTIONS
1. Non-biodegradable pollutants are created by:
a. nature
b. excessive use of resources
c. humans
d. natural disasters
2. According to the Central Pollution Control Board, particles that are
responsible for causing great harm to human health are of diameter:
a. 2.50 micrometers
b. 5.00 micrometers
c. 10.00 micrometers
d. 7.5 micrometers
3. The material generally used for sound proofing of rooms like a recording
studio and auditorium, etc. is:
a. cotton
b. coir
c. wood
d. styro foam
4. Compressed Natural Gas (CNG) is:
a. propane
b. methane
c. ethane
d. butane
5. World’s most problematic aquatic weed is:
a. Azolla
b. Wolffia
c. Eichornia
d. Trapa
, 114 BIOLOGY, EXEMPLAR PROBLEMS
6. Which of the following causes biomagnification?
a. SO2
b. Mercury
c. DDT
d. Both b & c
7. The expanded form of DDT is:
a. dichloro diphenyl trichloroethane
b. dichloro diethyl trichloroethane
c. dichloro dipyrydyl trichloroethane
d. dichloro diphenyl tetrachloroacetate
8. Which of the following material takes the longest time for biodegradation?
a. Cotton
b. Paper
c. Bone
d. Jute
9. Choose the incorrect statement.
a. The Montreal protocol is associated with the control of emission of
ozone depleting substances
b. Methane and carbon dioxide are green house gases
c. Dobson units are used to measure oxygen content
d. Use of incinerators is crucial to disposal of hospital wastes
10. Among the following which one causes more indoor chemical pollution?
a. burning coal
b. burning cooking gas
c. burning mosquito coil
d. room spray
11. The green scum seen in the fresh water bodies is:
a. blue green algae
b. red algae
c. green algae
d. both (a) and (c)
12. The loudness of a sound that a person can withstand without discomfort
is about
a. 150 dB.
b. 215 dB.
c. 30 dB.
d. 80 dB.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Hkane. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
64438 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now