Environmental Studies · General Awareness

Energy Efficiency and Green Buildings

2,475 Questions

Energy efficiency and green buildings focus on sustainable architecture, energy conservation, and green rating systems. Questions explore energy management systems, building emissions, and efficient appliances. This topic is highly relevant for environmental science papers and general awareness sections.

Green building certificationsEnergy conservation measuresSustainable architectureEnergy management systemsEnergy efficient appliancesCarbon emission policies

Energy Efficiency and Green Buildings Questions

Multiple choice general knowledge

employing automatic power management features on your computer and shutting down compuetrs and monitors aftre work hours can cut energy use by

  1. 20%

  2. 40%

  3. 60%

  4. 80%
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Enabling automatic power management features and systematically shutting down computers and monitors after work hours can reduce workplace energy consumption by approximately 80%. This significant saving comes from eliminating phantom power draw and ensuring devices don't run unnecessarily during non-working hours.

Multiple choice general knowledge

Each time you choose a compact fluorescent light bulb over an incandescent bulb, you'll keep nearly 700 pounds of carbon dioxide out of the air over the bulb's lifetime. Is it?

  1. No, incandescent bulb will do the work. Its vice versa

  2. No, Its the same either way.

  3. It will definitely reduce the CO2 emission but lesser than 150 pounds.

  4. Yes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Compact fluorescent bulbs are significantly more energy-efficient than incandescent bulbs. The claim of keeping 700 pounds of CO2 out of the atmosphere over the bulb's lifetime is generally accurate for the energy savings difference.

Multiple choice general knowledge science & technology

Which among the following is most energy efficient?

  1. Incandescent bulb

  2. Fluorescent tube light

  3. Compact fluorescent lamp

  4. non of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Compact fluorescent lamps (CFLs) are significantly more energy efficient than incandescent bulbs, converting more electrical energy into visible light rather than heat. They typically use 60-80% less energy than incandescent bulbs while producing the same luminous output. Fluorescent tube lights are more efficient than incandescent but less efficient than CFLs due to their larger ballast requirements.

Multiple choice general knowledge science & technology

The efficiency of an air conditioning unit can be measured by a standard known as SEER rating.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The SEER (Seasonal Energy Efficiency Ratio) rating is the standard measure of air conditioning efficiency in North America. It calculates the cooling output during a typical cooling season divided by the total electric energy input during the same period. Higher SEER ratings indicate more efficient units, with modern systems typically rated between 13-21 SEER.

Multiple choice general knowledge science & technology

Which among the following is most energy efficient?

  1. Incandescent bulb

  2. Fluorescent tube light

  3. Compact fluorescent lamp

  4. Serial Bulbs
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Compact fluorescent lamps (CFLs) are the most energy-efficient option listed, using approximately 75% less energy than incandescent bulbs and lasting longer. Fluorescent tube lights are also efficient but less so than CFLs. Incandescent bulbs are the least efficient, converting most energy to heat rather than light. 'Serial Bulbs' appears to be a distractor.

Multiple choice general knowledge

The kitchen and laundry are high consumers of water using between 15-20% of total water consumption. What is the most effective way to save water in these rooms?

  1. Use energy efficient appliances

  2. Re use rinse water from the washing machine

  3. Plug the sink when washing dishes or peeling vegetables

  4. Only use appliances when full
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Energy-efficient appliances (especially washing machines and dishwashers) use significantly less water per cycle. Modern efficient models can use 30-50% less water than standard appliances.

Multiple choice general knowledge sports

Which of the following lightbulb types uses the least energy, and therefor results in fewer greehouse gas emissions?

  1. Incandescent

  2. Compact fluorescent

  3. Halogen

  4. Sodium Vapour Lamp
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Among common residential bulb types, Compact Fluorescent (CFL) bulbs use significantly less energy than incandescent or halogen bulbs, producing fewer greenhouse gas emissions. LED bulbs would actually be most efficient, but weren't listed as options. CFL was the standard efficient choice before LEDs became mainstream.

Multiple choice general knowledge

Which is the most inefficient type of lights?

  1. CFL

  2. LED

  3. Incandescent bulbs

  4. Tubelights
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Incandescent bulbs are the most inefficient type of lighting, converting only about 5% of energy into visible light and 95% into heat. CFLs (compact fluorescent) are more efficient at ~20-25% efficiency, while LEDs are the most efficient at ~40-50% efficiency. Tubelights (fluorescent) are also more efficient than incandescent bulbs.

Multiple choice

Home owners who insulate their walls and windows properly can substantially reduce their homes' power bills, since improper insulation can waste upto ten percent of electricity.

  1. Home owners who insulate their walls and windows properly can substantially reduce their homes' power bills, since improper insulation can waste upto ten percent of power.

  2. Because improper insulation can waste upto ten percent of electricity of a home through heat loss, home owners can substantially reduce their homes' power bills by properly insulating walls and windows of their homes.

  3. Their homes' electricity bills are substantially reduced by home owners by proper insulation of walls and windows which, when improperly insulated, can waste upto ten percent electricity.

  4. The proper insulation of walls and windows by the home owners, due to the fact that improper insulation can waste upto ten percent of a home's energy by increase in heat loss, can reduce the power bills of homes.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Correct. The option corrects the error of misplaced modifier and the missing antecedent by rearranging the modifying clauses.

Multiple choice

Which among the basic concepts of green chemistry evaluates the efficiency of chemical transformation?

  1. Prevent Waste

  2. Maximize atom economy

  3. Design of safer chemicals

  4. Increase energy efficiency
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This option is correct because it evaluates the efficiency of chemical transformation. Similar to yield calculation, atom economy is a ratio of total mass of atoms in desired product to the total mass of atoms in the reactants. Hence it evaluates the efficiency of chemical transformation.

Multiple choice

Consider the following statements:

  1. CFLs are recommended to use because they convert DC to AC.
  2. CFL contains mercury, which is very toxic to health and environment.
  3. LEDs use the least power (watts) per unit of light generated (lumens).

Which of the given statements is/are correct?

  1. Only (1)

  2. Only (2)

  3. Only (3)

  4. Only (2) and (3)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

(i) Statement (1) is wrong. CFLs are recommended to use for their energy efficiency. Rectifiers are used to convert DC to AC. (ii) Statement (2) is correct. CFL lamps contain mercury, which is very toxic to health and environment. (iii) Statement (3) is correct. LEDs use the least power (watts) per unit of light generated (lumens).

Multiple choice commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

De-dust lighting fixture is used 

  1. To maintain illumination

  2. To increase energy efficiency

  3. To remove dust from bulb

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

De-dust lighting fixtures are designed to minimize dust accumulation, which ensures that the light output remains consistent and illumination levels are maintained over time.

Multiple choice commercial applications sources of water conservation of natural and energy resources energy conservation and sources importance of the conservation of natural resources reduce, recycle, reuse

What measures would you take to conserve electricity in your house?

  1. Use of fluorescent tubes or CFL.

  2. Put off the fans and lights when they are not required.

  3. Maximum use of solar radiation and use of solar water heating system during winters.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Ways of conserving electricity are as follows:
(a) Put off the fans and lights when they are not required.
(b) Maximum use of solar radiation.
(c) Use of solar water heating system. during winters.
(d) Use of fluorescent tubes or CFL.
Multiple choice poster writing english

Which of the options may be included in a poster on the given topic:

Saving electricity

  1. Save power and drive away darkness

  2. You can help save electricity in several ways

  3. Electricity is the flow of electrons...

  4. Ensuring the careful utilization of electricity is essential.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Posters are placards displayed in public announcing and advertising something. The purpose of a poster is either to create social awareness or to advertise or even extend public invitations and display notices.
The correct answer is Option A. This poster here, is to create awareness. The poster have important information in persuasive language. Slogans make an important part of the posters. Details and formal language is avoided in a poster to retain compactness.
Options B, C and D are incorrect as they do not adhere to the format of poster making.