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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Answer the Following.How Can the Oil Spills of Rivers and Oceans Be Cleaned? - Science and Technology 2

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प्रश्न

Answer the following.
How can the oil spills of rivers and oceans be cleaned?

टीपा लिहा

उत्तर

i. Spilling of petroleum oil occurs in ocean due to various reasons.

ii. This oil may prove fatal and toxic to aquatic organisms.

iii. It is not easy to remove the oil layer from surface of water by mechanical method. However, bacteria like Pseudomonas spp. and Alcanovorax borkumensis have the ability to destroy the pyridines and other chemicals.

iv. Hence, these bacteria are used to clear the oil spills. These are called as hydrocarbon clastic bacteria (HCB). HCB decompose the hydrocarbons and bring about the reaction of carbon with oxygen. CO2 and water is formed in this process.

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पाठ 7: Introduction to Microbiology - Exercises [पृष्ठ ८६]

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बालभारती Science and Technology 2 [English] 10 Standard SSC Maharashtra State Board
पाठ 7 Introduction to Microbiology
Exercises | Q 3.2 | पृष्ठ ८६

संबंधित प्रश्‍न

If a piece of bread is kept in a container in moist place for 2 – 3 days,
1. What will you see?
2. Write scientific name and a character of the organism you may observe.


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


Give scientific reasons.

Microbial enzymes are used instead of chemical catalysts in chemical industry.


Answer the following.
How does the bread become spongy?


____________ acid is used in the production of vitamins.


Biodegradable plastic used for storing the garbage.


Which fungus is used to make soya sauce by fermentation?


Which microbes convert uranium to its insoluble salts?


Write a short note.

Microbial inoculants


In industries microbial enzymes are used over chemical enzymes.


Explain – Importance of microbes in sewage (water) treatment in cities.


What is the use of antibiotics to human and other animals?


What products do you get from microorganisms through the fermentation process? Explain with an example.


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 _______.


Unscramble the jumbled word underlined in the following statement.

Curbossulite is an air-borne disease caused by a bacterium. 


Nostoc is used for fixing nitrogen.


What is pasteurization?


The first antibiotic ______ was developed by ______.


Give a scientific reason.

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


Complete the given paragraph by filling the blank spaces from the options given in the bracket:

[oxygen, pyridines, mechanical, CO2, petroleum, fatal, polyester, norcadia]

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


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