Science and Technology [IAS (Admin.) IAS Mains GS Paper 3 (Science-Tech, Economy, Environment, & Disaster Management)]: Questions 7 - 11 of 45

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Question 7

Science and Technology
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Appeared in Year: 2017

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Essay▾

Stem cell therapy is gaining popularity in India to treat a wide variety of medical conditions including Leukaemia, Thalassemia, damaged cornea and several burns. Describe briefly what stem cell therapy is and what advantages it has over other treatments?

Explanation

Stem cell therapy:

  • The goal of any stem cell therapy is to repair a damaged tissue that can՚t heal itself.
  • Stem cell therapy involve simply transplanting cells into the body and directing them to grow new, healthy tissue.
  • It may also be possible to coax stem cells already in the body to work overtime and produce new tissues.
  • A number of stem cell thera…

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Question 8

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Appeared in Year: 2015

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Essay▾

What do you understand by Run-of-River hydroelectricity project? How is it different from any other hydroelectricity project?

Explanation

Run-of- river hydroelectricity (ROR) is a type of hydroelectric generation.

  • Run of the river power plants Maida have no storage at all or a limited amount of storage in which case the storage reservoir is referred to as poundage.
  • A plant without poundage has no storage and is therefore subjected to seasonal river flows and may operate as an intermitt…

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Question 9

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Essay▾

Describe the sources of ionizing and non ionizing radiations and their effects on the biotic components of the atmosphere.

Explanation

There are two types of ionizing radiation

  • caused by particles (ii) caused by electromagnetic rays.
  • Atom carry enough energy to ionize an atom or molecule in atmosphere by completely removing an electron from its orbit in both types.
  • X-ray of high energy, Gamma rays, ultraviolet rays are some of the sources of ionizing radiation.
  • Gamma-rays of atom bomb…

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Question 10

Science and Technology
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Appeared in Year: 2015

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Essay▾

India՚s traditional knowledge digital library (TKDL) , which has a database containing formatted information on more than 2 million medicinal formulations is proving a powerful weapon in the countries fight agonist erroneous patents. Discuss the pros and cons of making this database publicly available under Open-Source licences.

Explanation

Open source software (OSS) is a computer software with its source code made available with a license in which the copyright holders provides the right to study, change and distribute the software to anyone and for any purpose.

Benefits of OSS:

  • Open source code is meant to be collaboration efforts where programmers improve upon the source code and mak…

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Question 11

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Essay▾

Bring out the prospects of development of alternative energy sources of India.

Explanation

Solar, wind , tidal, Geothermal etc. , are gradually been adopted and adopted as alternative source of energy.

  • The technology for efficiently harnessing these sources of energy are being developed and the cost or adequately reduced as well.
  • These energy sources have the advantage of producing energy in a non-polluting form and they are renewal by nat…

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