Tag: strategies to control environmental pollution and green chemistry

Questions Related to strategies to control environmental pollution and green chemistry

Which of the following method of separation is done with the help of bullocks?

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. Threshing

  2. handpicking

  3. winnowing

  4. sieving

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Correct Option: A
Explanation:

Threshing is the process of loosening the edible part of grain (or other crop) from the husks and straw to which it is attached. It is the step in grain preparation after reaping and before winnowing, which separates the grain from the chaff.

Green chemistry involves ?

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. production of chemicals of our daily use from green house gases

  2. such chemical processes in which green plants are used

  3. those reaction which are of biological origin

  4. use of non-toxic reagents and solvents to produce environment friendly products.

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Correct Option: D
Explanation:

Green chemistry is a design of products and process that reduces or eliminates the use of harmful hazardous products. It uses the concept of invention and design and invokes to produce products that are environment-friendly.

Soil is a natural medium for growth of land plants. Organic soil contains organic number upto a depth of

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. Two and a half feet

  2. One foot

  3. Six inches

  4. Ten feet

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Correct Option: A
Explanation:

Organic soil contain organic number upto a depth of two and half feet, this is also known as human or upper layer of soil.

Which of the following method of separation is used to separate heavier and lighter components of a mixture by wind or by blowing air?

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. winnowing

  2. handpicking

  3. threshing

  4. sieving

Show answer
Correct Option: A
Explanation:

The method of separation that is used to separate heavier and lighter components of a mixture by wind or by blowing air is winnowing.

The largest wind-energy farm in India is located ____________.

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. near Kanyakumari in Tamilnadu

  2. near Faridabad in Delhi

  3. near Warangat at in Telangana

  4. none of these

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Correct Option: A
Explanation:

The largest wind-energy farm in India is located near Kanyakumari in Tamilnadu.

Which of the following practices will not come under green chemistry?

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. If possible, making use of soap made of vegetable oils instead of using synthetic detergents.

  2. Using $H _{2}O _{2}$ for bleaching purpose instead of using chlorine based bleaching agents.

  3. Using bicycle for travelling small distances instead of using petrol/diesel based vehicles.

  4. Using plastic cans for neatly storing substances.

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Correct Option: D
Explanation:

Green chemistry is the different process and methods that helps in minimizing the effects of pollution and eliminating the hazardous substances. It takes care that no products adds to the environmental pollution. So using plastic cans does not come under green chemistry. 

The climate of Kerala is very:

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. hot

  2. wet

  3. hot and wet

  4. none of these

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Correct Option: C
Explanation:

Kerala, which lies in the tropic region, is mostly subject to the type of humid tropical wet climate experienced by most earth's rain-forest.


Hence, option C is correct.

The climate of Rajasthan is:

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. cold and dry

  2. cold and wet

  3. hot and dry

  4. hot and wet

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Correct Option: C
Explanation:

Rajasthan keeps varying throughout the state. In the desert areas, it is usually hot and dry in summer and cold during the winters.  | | --- | | |

The humidity of a place

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. lies between 10% - 20%

  2. is always more than 20%

  3. is always less than 80%

  4. varies from time to time

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Correct Option: D
Explanation:

Humidity is amount of water vapour present in air.It varies from place to place due variation in temperature and climate conditions.The ideal humidity for health and comfort is about $40-50$%.

paraffin wax contains alkanes ranging from

chemistry environmental chemistry biochemistry and the environment green chemistry strategies to control environmental pollution and green chemistry

  1. ${ C } _{ 3 }$ to ${ C } _{ 9 }$

  2. ${ C } _{ 10 }$ to ${ C } _{ 15 } $

  3. ${ C } _{ 16 }$ to ${ C } _{ 20 }$

  4. ${ C } _{ 21 }$ to ${ C } _{ 30 }$

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Correct Option: D