ESE 2020: Energy and Environment Quiz 1 for ESE & GATE CE Exams

Question 1

A set of relationships accounting for all the energy which is produced and consumed, and matches inputs and outputs, in a system over a given time period is

Question 2

Which of the following is/are correct?
1) Technique of utilising the ability of some trees species to re-generate from the stump after a cutting is Coppicing
2) A systematic method of identifying and accounting for energy flows through an industrial system or process to assist in identifying options to reduce energy use is Energy auditing
3) Amount of energy needed per unit of physical or monetary output is energy intensity
4) The average maximum power demand on an energy system, especially for electricity generation, over a period of time, usually a 24 hour cycle.

Question 3

Consider the following statements about Eutrophication
I. Eutrophication is a syndrome of ecosystem, response to the addition of artificial or natural substances such as nitrates and phosphates through fertilizer,sewage
II. Eutrophication is the enrichment of an aquatic system by the addition of nutrients

Question 4

Which of the following is true about Bioaccumulation
1) Bioaccumulation refers how pollutants enter a food chain
2) In bioaccumulation there is an increase in concentration of a pollutant from the environment to the first organism in a food chain
3) It refers to the tendency of pollutants to concentrate as they move from one trophic level to the next
4) There is an increase in concentration of a pollutant from one link in a food chain to another
Choose the correct from the above

Question 5

Match the following
List 1:
i. Kinetic energy
ii. Mechanical energy
iii. Chemical energy
List 2:
a) The energy of rotation usually associated with a rotating shaft
b) A form of energy stored in atoms or molecules
c) energy possessed by a moving object, in a stream such as wind or water
Choose the correct from below

Question 6

100 kJ of energy is equivalent to

Question 7

Consider the following tertiary treatment methods for treatment of waste water :
1. Ion-exchange method
2. Reverse osmosis
3. Chemical oxidation method
4. Activated sludge process
Which of the above methods are correct?

Question 8

Which one of the following is the major characteristic of deciduous trees?

Question 9

Consider the following laws of ecology suggested by Barry Commoner:
1) Everything is connected to everything else.
2) Everything must go somewhere.
3) Nature knows best.
4) There is no such thing as a free lunch.
Which of the above statements are correct?

Question 10

Consider the following statements regarding SMOG:
1. SMOG was coined during the 1950’s to describe a mixture of smoke and fog experienced in London
2. The principal pollutants in London SMOG are particulates and sulphur compounds
3. The London SMOG occurs generally early in the morning on cold wet winter days
Which of the above statements are correct?