Tag: substances, objects and energy

Quizzes (5) Questions (175)

Questions Related to substances, objects and energy

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

The downsides of using hydrogen as a fuel are:

  1. less availability

  2. storage is complicated

  3. pollution during production

  4. all of above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

There are some downsides of using hydrogen as a fuel :
1.Few filling stations sell hydrogen.
2.Hydrogen must be compressed and liquefied, and then stored in tough, insulated fuel tanks.
3.Atmospheric pollution may be generated during the production of hydrogen.
4.Hydrogen fuel cells do not work at very low temperatures, and they may also require a platinum catalyst (platinum is expensive and prone to contamination by impurities).

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

Which of the following measures can help in controlling hydrocarbon pollution?

  1. Less usage of automobile

  2. Controlling population
  3. Both $A$ and $B$

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

Less usage of automobiles and controlling population he following measures can help in controlling hydro carbon pollution
Hence option C is the correct answer.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

 Methylbutane on reacting with bromine in the presence of sunlight gives mainly:

  1. 2-bromo 3-methylbutane

  2. 1-bromo 3-methylbutane

  3. 2-bromo 2-methylbutane

  4. 1-bromo 2-methylbutane
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Bromination of alkanes is selective. The tertiary hydrogen is the most reactive, leading to the formation of the most stable radical intermediate, which results in 2-bromo-2-methylbutane.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

______ is three times as powerful as gasoline and other fossil fuels.

  1. Carbon

  2. Hydrogen

  3. Oxygen

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

Hydrogen is both powerful and efficient. It is enough to provide power for powerful machines such as spaceships. Also, it is environmentally friendly and is a much safer choice compared to other fuel sources. Hydrogen is three times as powerful as gasoline and other fossil fuels. This means that it can accomplish more with less.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

What are the advantages of renewable source of energy?

  1. They are cheapest source

  2. They are eco-friendly

  3. They can cause a lot of destruction

  4. They can also be used against enemy country
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Renewable sources are a bit costly as compared to fossil fuels but they are eco-friendly.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

Which one of these are not the reasons for energy crisis?

  1. Overconsumption

  2. Poor infrastructure

  3. Energy simulation

  4. Poor distribution system
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Energy simulation software can be used by big corporates and corporations to redesign building unit and reduce running business energy cost. Engineers, architects and designers could use this design to come with most energy efficient building and reduce carbon footprint. Hence it cannot be the reason for energy crisis, rather it is the solution to energy crisis.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

What can be the solution of energy crisis?

  1. Wars and attacks

  2. Major accidents and natural calamities

  3. Poor distribution system

  4. Common stand on climate change
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Both developed and developing countries should adopt a common stand on climate change. They should focus on reducing greenhouse gas emissions through an effective cross border mechanism. With current population growth and over consumption of resources, the consequences of global warming and climate change cannot be ruled out. Both developed and developing countries must focus on emissions cuts to cut their emission levels to half from current levels by 2050.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

Which one of the below is not the solution for energy crisis?

  1. Energy simulations

  2. Perform energy audit

  3. Easier grid access

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

Tax hikes, strikes, military coup, political events, severe hot summers or cold winters can cause sudden increase in demand of energy and can choke supply. A strike by unions in an oil producing firm can definitely cause an energy crisis. Hence tax hikes are the reason for the increase in energy crisis not the solution.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

What can be the reason for energy crisis?

  1. Moving towards renewable energy

  2. Lighting controls

  3. Delay in commissioning of power plants

  4. Easier grid access
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In few countries, there is a significant delay in commissioning of new power plants that can fill the gap between demand and supply of energy. The result is that old plants come under huge stress to meet the daily demand for power. When supply doesnt matches demand, it results in load shedding and breakdown.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

Which of the factors is mainly responsible for the increase in demand of natural resources?

  1. Environmental Pollution

  2. Increase in Human Population

  3. Scientific advancement

  4. Use of Biodegradable Chemicals
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Demand for natural resources has in the past been correlated with economic growth, but there are more factors at play than simple economics. Population change alone does also not lead to more demands for natural resources – although both play a part. Factors such as income growth, environmental change, advances in technology and price pressures all have a part to play.