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

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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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