The Correct answer is (D)
(1/4)Microbial Fuel Cells (MFCs) are devices that use bacteria as the catalysts to oxidize organic and inorganic matter and generate current.
(2/4)Electrons produced by the bacteria from these substrates are transferred to the anode (negative terminal) and flow to the cathode (positive terminal). Hence, statements 1 and 2 are correct.
(3/4)Microbes are found in great numbers in sewage, and the conditions of a waste water treatment plant are ideal for the types of bacteria that can be used in an MFC.
(4/4)Thus, they can be installed in waste water treatment plants to cleanse water and produce electricity. Hence, statement 3 is correct.
Therefore, option (d) is the correct answer.

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More from @drishtiiaseng

Dec 13
The Correct answer is (D)
(1/3) A corporate tax is a tax levied on the profits of a company/firm, and is paid on a company’s taxable income. Corporate taxes are collected by the government as a source of income.
(2/3)These taxes are based on taxable income, after expenses have been deducted.
Corporation Tax is an appropriation out of profits from business, interest on securities and dividends of the company.
Read 4 tweets
Dec 13
The Correct answer is (C)
(1/3)Troika refers to the top grouping within the G20 that consists of the current, previous and the upcoming presidencies. Hence, statement 1 is correct.
(2/3)The G20 was founded in 1999 after the Asian financial crisis as a forum for the Finance Ministers and Central Bank Governors to discuss global economic and financial issues.
Read 4 tweets
Dec 12
The Correct answer is (D)
(1/6)National Food Security Act (NFSA) Ranking 2022:
In 2022, the first edition of the State Ranking Index for National Food Security Act (NFSA), 2013 was released.
(2/6)The index seeks to document the status and progress of the implementation of NFSA across the country and various reform initiatives after consultation with the states. Hence, statement 1 is correct.
Read 7 tweets
Oct 3
(1/4)The correct answer of Daily PT Practice is option (c)
Explanation
Intangible cultural heritage is the practices, expressions, knowledge and skills that communities, groups and sometimes individuals recognise as part of their cultural heritage. Hence, statement 1 is correct
(2/4)The living cultural heritage can be expressed in one of the following forms:
Oral Traditions
Performing Arts
Social Practices
Rituals and Festive events
Knowledge and Practices concerning nature and the universe
Traditional Craftsmanship
Read 5 tweets
Oct 2
(1/3)The correct answer of Daily PT Practice is option (a)

Explanation
India was ranked 40th position out of 132 in the Global Innovation Index (GII) 2022 rankings released by World Intellectual Property Organization (WIPO). Hence, statement 1 is correct.
(2/3)India was ranked 46th position in 2021, and 81st rank in 2015.
The Global Innovation Index, which is published annually, has been a leading reference for measuring an economy’s innovation performance. Hence, statement 2 is not correct.
Read 4 tweets
Oct 1
Before you welcome the new day, attempt a question from one of newspaper editorials.

Solve more questions at drishti.link/EDquiz

#MidnightRevisionWithDrishtiIAS #UPSC2022 #UPSC #Editorial #DrishtiIASEditorial #UPSCAspirants #Aspirants #DrishtiIAS #DrishtiIASEnglish Image
(1/4)The correct answer of Editorial Quiz is option (c)

Chief of Defence Staff (CDS) is a four-star General/Officer who acts as the Principal Military Advisor to the Defence Minister on all tri-services (Army, Navy and Indian Air Force) matters.
(2/4)CDS acts as the permanent Chairman of the Chiefs of Staff Committee which will also have three service chiefs as members.
He also heads the newly created Department of Military Affairs (DMA) in the Ministry of Defence. Hence, statement 1 is correct.
Read 5 tweets

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