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There is a Oil Layer on the Water Surface of River in Your Area. What Will You Do ? - Science and Technology 2

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प्रश्न

There is a oil layer on the water surface of river in your area. What will you do ?

एक पंक्ति में उत्तर

उत्तर

Hydrocarbonoclastic bacteria like pseudomonas spp. and Alcanovorax borkumensis are used to clear the oil on the water surface of river in my area.

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2018-2019 (March) Set 1

संबंधित प्रश्न

Yeast is used in the production of ______.


Why is it necessary to ban the use of plastic bags?


Complete the following conceptual picture with respect to uses.


Answer the following.
What is role of microbes in compost production?


Rewrite the following statement using correct of the option and explain the completed statement.

Chemically, vinegar is -- -- --.


Complete the paragraph using proper words:

(Mechanical, Rhizobium, Aquatic, Toxic, CO2, Nitrogen, Pseudomonas, Amoeba, Bacteria, Hydrocarbons)

Spilling of petroleum oil occurs in ocean due to various reasons. This oil may prove fatal and toxic to _______ organisms. It is not easy to remove the oil layer from surface of water by _______ method. However, bacteria like _______ spp. and Alcanivorax borkumensis have the ability to destroy the pyridines and other chemicals. Hence, these _______ are used to clear the oil spills, These are called as hydrocarbonoclastic bacteria (HCB). HCB decompose the _______ and bring about the reaction of carbon with oxygen. _______ and water is formed in this process.


Find an odd one out.


Vinegar is used to bring sweetness in food products.


Give scientific reason.

Microorganisms are used to control the effects of sea oil spills.


Why should we use bioinsecticides?


Which fuels do we get from microbes?


What is the importance of probiotics to humans?


Briefly explain the environmental role of microorganisms in pollution control?


Observe the figure and write the answers to the questions asked.

  1. Write the name of the fungus in the figure above.
  2. What is the source of these fungi?
  3. Which organic acid obtained from this organism is used in commercial production?

Observe the figure and write the answers to the questions asked.

  1. Name the above figure.
  2. What is it used for?
  3. Which gas is formed in it?
  4. How is this gas formed?
  5. What is done with sewage?

Complete the paragraph by selecting the appropriate option in parentheses.

(energy, microbial, erosion-proof, reused, purification, environmentally friendly)

Nowadays, instead of chemical catalysts, _______ enzymes are used in the chemical industry. These enzymes are active at low temperature, pH and pressure; due to which _______ is saved and _______ instruments are also not necessary. Enzymes carry out specific processes; hence unnecessary by-products are not formed due to which expenses on _______ are minimised. In case of microbial enzymatic reactions elimination and decomposition of waste material is avoided and enzymes can be _______ Hence, such enzymes are _______.


State whether true or false. If false, correct the statement.

Rhizobium, associated with root nodules of leguminous plants fixes atmospheric nitrogen.


Match the following

i. Probiotic a. Kuru
ii. Preservation b. Methanogen
iii. Prion c. Curd
iv. Biogas d. Sugar

The first antibiotic ______ was developed by ______.


In the process of making bread the carbohydrates in the flour are fermented by baker's yeast and sugar is transformed into carbon dioxide and ______.


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