Download PDF
Free download in PDF Environment and Ecology Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(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
(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
(24)
When oxides of sulphur and nitrogen are present in the rain, the rain water becomes:-
[A]
Colourful
[B]
Neutral
[C]
Acidic
[D]
Basic
(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
(26)
Which microorganism acts as a biological indicator for the Sulphur dioxide pollution?
[A]
Lichens
[B]
Pseudomonas
[C]
Algae
[D]
Cyanobacterium
(27)
Which of the following pollutant is not present in the vehicular emissions?
[A]
Ammonia
[B]
Particulate Matter
[C]
Carbon Monoxide
[D]
Lead
(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
(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
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
33
Which one of the following is not an energy recovery method of solid waste management?
[A]
Composting
[B]
Pyrolysis
[C]
Biomethanation
[D]
Pelletisation
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
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
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
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
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
Take Mock Tests