MCQ’S ON OZONE LAYER DEPLETION
1. Good ozone is found in the
(a) stratosphere
(b) ionosphere
(c) troposphere
(d) mesosphere
Answer: (a)
2. This is not the consequence of ozone layer depletion
(a) malignant melanoma – skin cancer type
(b) increased ultraviolet radiations
(c) tides
(d) cyanobacteria are sensitive to UV rays and would be affected by its increase
Answer: (c)
3. Greenhouses gases causing a rise of 3℃ rise in the overall global temperature in the past century are CFCs. The CFC used in refrigerators is
(a) Ammonia
(b) Freon
(c) Methane
(d) carbon dioxide
Answer: (b)
4. Main cause of ozone holes and its depletion is
(a) propellants
(b) foam-blowing agents
(c) halocarbon refrigerants
(d) all of these
Answer: (d)
5. Ozone can be destroyed by the following free radical(s)
(a) chlorine radical (Cl)
(b) hydroxyl radicals (OH)
(c) nitric oxide radical (NO)
(d) all of these
Answer: (d)
6. Following form(s) of oxygen is/are involved in ozone-oxygen cycle
(a) triatomic oxygen (O3)
(b) diatomic oxygen (O2)
(c) atomic oxygen (O)
(d) all of these
Answer: (d)
7. Ozone-depleting substance chiefly utilized in
(I) chimneys
(II) all of the human activities
(III) burning fossil fuels
(IV) cooling and refrigeration applications and in the manufacturer of foam products
(a) All
(b) Only IV
(c) Only I, II and III
(d) Only I and II
Answer: (b)
8. Montreal protocol is related to the
(a) food security
(b) global warming
(c) sustainable development
(d) ozone layer depletion
Answer: (d)
9. This is a major risk linked with extreme ultraviolet rays through the atmosphere as a result of ozone layer depletion
(a) neurological disorder
(b) digestive system gets damaged
(c) increased liver cancer
(d) increased skin cancer
Answer: (d)
10. UV rays is higher in summer as
(a) during summer, ozone is more in the atmosphere
(b) sun is busy in summer specially
(c) sun is closer to planet earth so UV rays have a shorter distance to travel and reach us
(d) none of the above
Answer: (c)
MCQ’S ON BIOMASS ENERGY
1. Biomass is used in the production of
(a) fibres
(b) chemicals
(c) transportation fuels
(d) biochemicals
Answer: (c)
2. Production of bioethanol is through fermentation of ________ and starch components
(a) alcohol
(b) sugar
(c) milk
(d) acid
Answer: (b)
3. This is also called a biogas
(a) biobutanol
(b) biodiesel
(c) bioethanol
(d) biomethane
Answer: (d)
4. In biomethane, the percentage of carbon dioxide is
(a) 55-60
(b) 35-45
(c) 30-40
(d) 32-43
Answer: (c)
5. By-products generated during the rectification of bioethanol is utilized as
(a) sheep feed
(b) cow feed
(c) dog feed
(d) pig feed
Answer: (c)
6. Bioethanol is mixed with ________ to prepare transport fuel
(a) oil
(b) petrol
(c) kerosene
(d) diesel
Answer: (b)
7. Bioethanol is denatured alcohol, also referred to as
(a) methylene
(b) ethylene
(c) ethylene glycol
(d) methylated spirit
Answer: (d)
8. This forestry material is used as biomass
(a) fish oil
(b) logging residues
(c) manure
(d) tallow
Answer: (b)
9. The aerobic digestion of sewage is utilized in the production of
(a) metal articles
(b) biofuels
(c) biomass
(d) synthetic fuels
Answer: (b)
10. This is an example of starch crops biomass feedstocks
(a) corn stover
(b) wheat straw
(c) orchard prunings
(d) sugar cane
Answer: (d)
