Green chemistry - class-XI
Description: green chemistry | |
Number of Questions: 41 | |
Created by: Saurabh Mittal | |
Tags: chemistry environmental chemistry biochemistry materials |
Switching from air to pure oxygen eliminates the NO production. This is an application of:
Whenever practicable, synthetic methods should be designed to use and generate substances that are little or not toxic to human health and environment, is an objective of:
Current commercial method for producing ibuprofen is a stunning application of Green chemistry because ______ .
To manufacture computer chips, many chemicals, large amounts of water, and energy are required which is harmful to environment. a process is discovered which significantly reduces the quantities of chemicals, energy, and water needed to produce chips. This is an application of:
A raw material feedstock should be renewable rather than depleting, whenever technically and ecomonically practical, is an objective of:
Plastics being developed from eco-friendly renewable sources, plus some modern plastics are biodegradable is one of the achievements of________.
Which of the following is not an objective of Green chemistry?
Biomass is used instead of extensive use of petroleum. This is an application of :
_______ is an environment-friendly product and better than halons which are used to extinguish fire.
Taking chromium and arsenic, which are toxic, out of pressure-treated wood, and using new less toxic chemicals for bleaching paper, are examples of _________.
Plastic used to preserve yogurts is replaced with a polymer called polylactic acid is an example of _______.
Which one of the following is not an application of green chemistry?
Shrinkage of concrete depends upon the:
Green chemistry is:
$Statement\ I-$ Algal blooms, caused by phosphates, are beneficial to aquatic ecosystems.
BECAUSE
$Statement\ II-$ Algal blooms are associated with rapidly increasing rates of photosynthesis which lead to dissolve oxygen content in the water leading to much higher than normal levels.
_________ are called the elements of the weather.
The monsoon winds that carry a lot of water to India come from the:
What does Green Chemistry in terms of environment mean?
The average weather pattern taken over a long time, say _______, is called the climate of the place.
All changes in the weather are caused by the:
Solvents used to dry clean clothes are usually $C 2Cl _4$ .A substitute has been discovered which is environmental friendly is an application of _________.
Which of the following compounds are toxic?
The short term variation which occurs in the atmosphere is called:
________ reduces toxicity, minimizes waste, saves energy, and cuts down on the depletion of natural resources. It allows for advances in chemistry to occur in a much more environmentally benign way.
Faraday has developed a plating process to make high-performance chrome coatings from trivalent chromium instead of highly toxic hexavalent chromium. This is an application of:
The process of nutrient enrichment is termed as:
Green chemistry means such reactions which -
Which of the following method of separation is done with the help of bullocks?
Green chemistry involves ?
Soil is a natural medium for growth of land plants. Organic soil contains organic number upto a depth of
Which of the following method of separation is used to separate heavier and lighter components of a mixture by wind or by blowing air?
Which of the following practices will not come under green chemistry?
The climate of Kerala is very:
The climate of Rajasthan is:
The humidity of a place
paraffin wax contains alkanes ranging from
Which of the following gas is used in bleaching of paper?
Chlorofluorocarbons have been in use in refrigerators and air conditioners are proved to be unfriendly to the environment. Substitutes to these compounds which are friendly to the environment are:
The design, development and implementation of chemical products and process to reduce or eliminate the use and generation of substances hazardous to human health and environment is called ________ .
Which of the following reaction occur when urea is added to soil as a fertilizer?