Question Discussion & Solution

The correct answer is B12.

• Cobalamin is the scientific name of B12.

Key Points

• Vitamins:
  • It was first invented by FG Hopkins.
  • The term vitamin was coined by C Funk.
  • Vitamins provide no calories, they only regulate chemical reactions occurring in the metabolism of the body.
    • Water-soluble vitamins are Vitamin-B and Vitamin-C.
    • Fat-soluble vitamins are Vitamin-A, Vitamin-D, Vitamin-E and Vitamin-K. {Trick to remember: KEDA does not dissolve in water}
• Vitamin-B12:
  • Its chemical name is cobalamin.
  • Cyanocobalamin is a man-made form of vitamin B12.
  • Cobalt is found in Vitamin-B12. 
  • It is water-soluble.
  • Its deficiency causes Pernicious anaemia.
  • Its rich sources are Meat, poultry, fish, eggs, milk.

Additional Information​

The correct answer is 1 i.e. propanal.

Concept:

IUPAC nomenclature:

• A systematic method of naming organic compounds.
• Naming is based on their structures.
• It is devised by the International Union of Pure and Applied chemistry.
• Many rules are followed while naming the compounds and it is different for different functional groups.
• The rules are known as IUPAC rules.

Explanation:

• This compound contains 3 carbon atoms, so its parent alkane is propane.
• It also contains an aldehyde group (-CHO-) group which is indicated by using 'al' as suffix or ending.
• So by replacing the last 'e' of butane with 'al', the name becomes propanal.
• Thus, the IUPAC name of the compound CH3CH2CHO is propanal.
• The common name of propanal is Propionaldehyde.

​Additional Information

• The chart for priority order and suffix name is given below:

The correct answer is Kuchipudi Dance.

• Yamini Krishnamurti is related to Kuchipudi Dance.

Key Points 

• Yamini Krishnamurti is a Kuchipudi dancer.
• She also knows Bharatnatyam.
• A Passion For Dance is her autobiography.
• Kuchipudi:
  • It is the classical dance of Andhra Pradesh.
  • Kuchipudi derives its name from the Kuchipudi village of Andhra Pradesh.
  • Kuchipudi exhibits scenes from the Hindu Epics, legends and mythological tales through a combination of music, dance and acting.
  • Like other classical dances, Kuchipudi also comprises pure dance, mime and histrionics but it is the use of speech that distinguishes Kuchipudi’s presentation as dance-drama.
  • ‘At times, even though the dramatic situation did not demand, solo dancing was being presented to punctuate the presentation and to enhance the appeal. One such number is tarangam inspired by the Krishna-Leela tarangini of Teerthanarayana Yogi.
  • There are now two forms of Kuchipudi
    • The traditional musical dance drama 
    • The solo dance.
• Bharatnatyam is the classical dance of Tamil Nadu.

The correct answer is Vivek Ram Chaudhari.

Key Points

• Air Marshal Vivek Ram Chaudhari has been named as the next Chief of Air Staff.
  • He succeeds Air Chief Marshal RKS Bhadauria who will retire from service in the end of September 2021.
  • Currently posted as the Vice Chief of Air Staff, the officer was commissioned into the fighter stream and has commanded a MiG 29 squadron and has experience of various types of aircraft including the SU 30MKI.

The correct answer is Generation.

• The letter 'G' has been used for Generation in 4G technology in mobile communication.

Key Points

• Meaning of 'G' in mobile signal
  • The G in 2G, 3G and 4G stands for Generation, and they refer to the 2nd, 3rd and 4th generation of wireless technology. 
  • The higher the generation the better, fast, and powerful will be the network.
  • Letter G stands for GPRS (General Packet Radio Service).
  • It indicates the slowest speed of internet data transfer on our mobile phone.

​Additional Information

• Meaning of 'E' in mobile signal
  • Letter E stands for EDGE (Enhanced Data Rates for GSM Evolution).
  • It is also called Enhanced GPRS.
  • This technology lies somewhere in between 2G and 3G technology.
  • So, some people refer to it as 2.5G.