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Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?

Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?(2021) a) Low-density polyethylene b) Polycarbonate c) Polyethylene terephthalate d) Polyvinyl Chloride Answer: B BPA is a precursor to important plastics, primarily certain polycarbonates and epoxy resins, as well as some polysulfones and certain […]

With reference to street-lighting, how do sodium lamps differ from LED lamps?

With reference to street-lighting, how do sodium lamps differ from LED lamps? 1. Sodium lamps produce light in 360 degrees but it is not so in the case of LED lamps. 2. As street-lights, sodium lamps have longer life span than LED lamps. 3.The spectrum of visible light from sodium lamps is almost monochromatic while […]

The term ‘ACE2” is talked about in the context of

The term ‘ACE2” is talked about in the context of(2021) a) genes introduced in the genetically modified plants b) development of India’s own satellite navigation system c) radio collars for wildlife tracking d) spread of viral diseases Answer: D On the surface of human cells is an enzyme called ACE2, which acts as the receptor […]

Water can dissolve more substances than any other liquid because.

Water can dissolve more substances than any other liquid because.(2021) a) It is dipolar in nature. b) It is a good conductor of heat c) It has high value of specific heat d) It is an oxide of hydrogen Answer: A Water is called the universal solvent since it is capable of dissolving a variety […]

Which of the above can be cultured in an artificial/ synthetic medium?

Consider the following: 1. Bacteria 2. Fungi 3. Virus Which of the above can be cultured in an artificial/ synthetic medium?(2021) a) 1 and 2 only b) 2 and 3 only c) 1 and 3 only d) 1,2 and 3 Answer: AUnlike bacteria, many of which can be grown on an artificial nutrient medium, viruses […]

With reference to :Blockchain Technology: consider the following statements:

With reference to :Blockchain Technology: consider the following statements: 1.It is a public ledger that everyone can inspect, but which no single user controls. 2.The structure and design of blockchain is such that all the data in it are about cryptocurrency only 3.Applications that depend on basic features of blockchain can be developed without anybody:s […]

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