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Environment and Ecology Quiz | Environment and Ecology Objective Type Questions and Answers

Questions
21 The term used for the conservation of ecosystem, natural habitats and the maintenance and recovery of viable population of species in their natural surroundings is:
A Peripheral Conservation
B Ex-Situ Conservation
C In-Situ Conservation
D Core Conservation

Answer: Ex-Situ Conservation
22 In which of the following years, oil spills in the Gulf of Mexico occurred?
A 2010
B 2007
C 2013
D 2012

Answer: 2010
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23 The compound containing three atoms of oxygen which protects the environment is known as:-
A Nitrous oxide
B Ozone
C Water
D Hydrogen Peroxide

Answer: Ozone
24 When oxides of sulphur and nitrogen are present in the rain, the rain water becomes:-
A Colourful
B Neutral
C Acidic
D Basic

Answer: Acidic
25 Which of the following plant species introduced in India appeared to be a trouble due to its heavy growth in the Indian water bodies?
A Nux Vomica
B Pistia
C Eichhornia
D Cinchona

Answer: Eichhornia
26 Which microorganism acts as a biological indicator for the Sulphur dioxide pollution?
A Lichens
B Pseudomonas
C Algae
D Cyanobacterium

Answer: Lichens
27 Which of the following pollutant is not present in the vehicular emissions?
A Ammonia
B Particulate Matter
C Carbon Monoxide
D Lead

Answer: Ammonia
28 What is the average density of Earth's surface?
A 21 g/cm3
B 5.5 g/cm3
C 15 g/cm3
D 6.5 g/cm3

Answer: 5.5 g/cm3
29 Which of the following features is not related to the Biodiversity hot spots?
A Destruction of habitat
B Large number of exotic species
C Abundance of endemic species
D Large number of species

Answer: Destruction of habitat
30 In which of the following areas we will find pitcher plant?
A Western Ghats
B Rain forests of North-East India
C Thar desert
D Sunderban Deltas

Answer: Rain forests of North-East India
31 In India, an Environment Impact Assessment report of a proposed mining project after environmental clearance is applicable for a maximal period of how many years?
A 5 years
B 10 years
C 30 years
D 2 years

Answer: 30 years
32 The colour code of the container for collection of waste scrap generated from Hospitals is
A Blue
B Green
C White
D None of the above

Answer: Blue
33 Which one of the following is not an energy recovery method of solid waste management?
A Composting
B Pyrolysis
C Biomethanation
D Pelletisation

Answer: Composting
34 According to Recycled Plastics (Manufacture and Usage) Rules 1999, the minimum thickness of carry bags shall not be less than
A 20 microns
B 50 microns
C 10 microns
D 30 microns

Answer: 20 microns
35 The problem of thermal pollution can be alleviated by using
A More efficient electricity generating plants
B Cooling towers
C Cooling ponds
D All the above

Answer: All the above
36 Organic matter (OM) content of soil can be calculated from organic carbon (OC) by using the formula
A OM (%) = OC (%) × 1.724
B OM (%) = OC (%) × 1.427
C OM (%) = OC (%) × 1.247
D OM (%) = OC (%) × 1.472

Answer: OM (%) = OC (%) × 1.724
37 Which one of the following pesticides persists for a long period in soil?
A Monocrotophos
B Lindane
C Parathion
D Carbaryl

Answer: Lindane
38 Carbon dioxide evolved from soil mainly comes from
A Microbial respiration
B Soil animals respiration
C Root respiration
D None of the above

Answer: Microbial respiration
39 Which of the following types of coal contains higher percentage of volatile matter?
A Bituminous
B Lignite
C Peat
D Anthracite

Answer: Peat
40 Ocean-Grabbing and Ocean-Encroachment are associated with
A Big fishing concern
B Oil spilling
C Oil drilling on the shores
D Hijacking of ships by pirates

Answer: Big fishing concern

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