Science

Microwave ovens are so quick and efficient because they channel heat energy directly to the molecules (tiny particles) inside food. Microwaves heat food like the sun heats your face—by radiation. A microwave is much like the electromagnetic waves that zap through the air from TV and radio transmitters. It’s an invisible up-and-down pattern of electricity and magnetism that races through the air at the speed of light (300,000 … Read more DMPQ- Explain the functioning of microwave.

There are several ways of removing particulate matter; the most widelyused of which is the electrostatic precipitator, which can remove over 99 per cent particulate matter present in the exhaust from a thermal power plant. It has electrode wires that are maintained at several thousand volts, which produce a corona that releases electrons. These electrons … Read more DMPQ :What is electrostatic precipitator? Explain with the help of diagram.

India’s Polar Satellite Launch Vehicle (PSLV-C45)  successfully launched EMISAT and 28 international customer satellites from Satish Dhawan Space Centre (SDSC) SHAR in Sriharikota. This flight marked the first mission of PSLV-QL, a new variant of PSLV with four strap-on motors. EMISAT is a satellite built around ISRO’s Mini Satellite-2 bus weighing about 436 kg. The … Read more DMPQ- PSLV-C45

Micropropagation Ans:  Method of producing thousands of plants through tissue culture is called micropropagation. Each of these plants will be genetically identical to the original plant from which they are grown. They are soma clones. Somatic hybridisation Ans:  In somatic hybridisation cell wall is removed by digesting it with enzyme like pectinase and cellulase. Isolated … Read more DMPQ: Micropropagation, Somatic hybridisation, Single cell protein, Mutation breeding

:  The polymerase chain reaction is a technique for cloning a particular piece or amplifying a single or few copies of a piece of DNA, generating millions or more copies of that particular DNA sequence. One can make virtually unlimited copies of a single DNA molecule even though it may initially be present in a … Read more DMPQ: . What is Polymerase Chain reaction? What are the materials required for Polymerase chain reaction?

IndiGen Programme aims to undertake whole genome sequence of thousands of individuals representing diverse ethnic groups from India. It also strives to enable genetic epidemiology and develop public health technologies applications using population genome data. IndiGen  project selected the 1000-odd persons from a pool of about 5,000 and sought to include representatives from every state … Read more DMPQ-Comment on IndiGen.

  Nanotechnology is improving the efficiency of fuel production from raw petroleum materials through better catalysis. It is also enabling reduced fuel consumption in vehicles and power plants through higher-efficiency combustion and decreased friction.  carbon nanotube “scrubbers” and membranes to separate carbon dioxide from power plant exhaust. Development of wires containing nano tube that will … Read more DMPQ: . Application of nanotechnology in the field of Energy application. (SCIENCE)

Live vaccines are derived from “wild,” or disease-causing, viruses or bacteria. These wild viruses or bacteria are attenuated, or weakened, in a laboratory, usually by repeated culturing. For example, the measles virus used as a vaccine today was isolated from a child with measles disease in 1954. Almost 10 years of serial passage using tissue … Read more DMPQ- Examine the process of Live Attenuated Vaccines .

A) What is ultrasound waves and outline its benefits? Waves which have frequency more than 20,000 Hz and which are not audible to human ears but audible to dogs, cats , bats, whales. Ultrasounds are used in various different fields. They are used to detect objects and measure distance. Ultrasound imagining is used in the … Read more A) What is ultrasound waves and outline its benefits? b) Use of Inert gases

Dark Web is the virtual equivalent of a black market. Like Silk Road that marketed illegal drugs through the Dark Web, entities which want to operate out of the arms of the law seek refuge in the Dark Web.  Dark Web can be simply explained as a specialised form of browsing in incognito mode. While … Read more DMPQ- Write a short note on Dark Web.