Chlorination is a process used for water purification. The disinfecting action of chlorine is mainly due to
Important Questions on Chemistry
Consider the following
1. Carbon dioxide
2. Oxides of nitrogen
3. Oxides of sulphur
Which of the above is/are the emission/emissions from coal combustion at thermal power plants?
Consider the following:
1. Photosynthesis
2. Respiration
3. Decay of organic matter
4. Volcanic action
Which of the above 'adds' carbon dioxide to the carbon cycle on Earth?
Aspartame is an artificial sweetener sold in the market. It consists of amino acids and provides calories like other amino acids. Yet, it is used as a low-calorie sweetening agent in food items. What is the basis of this use?
Biomass gasification is considered to be one of the sustainable solutions to the power crisis in India. In this context, which of the following statement(s) is/are correct?
1. Coconut shells, groundnut shells and rice husk can be used in biomass gasification.
2. The combustible gases generated from biomass gasification consist of hydrogen and carbon dioxide only.
3. The combustible gases generated from biomass gasification can be used for direct heat generation but not in internal combustion engines.
Select the correct answer using the codes given below:
What is the role of ultraviolet (UV) radiation in the water purification system?
1. It inactivates/kills the harmful microorganisms in water.
2. It removes all the undesirable odours from the Water.
3. It quickens the sedimentation of solid particles, removes turbidity and improves the clarity of water.
Which of the statement(s) given above is/are correct?
