DMPQ:What is nano-technology? Write in brief about its possible applications

Nanotechnology relates to the technology of rearranging and processing of atoms and molecules to fabricate material to Nano specifications such as nano meters, the technology will enable scientist and engineers to see and manipulate matter at the molecular level atom by atom create new structure with fundamentally new molecular organic material and exploit the novel … Read more DMPQ:What is nano-technology? Write in brief about its possible applications

Discuss the following a) LED b) Insulated Gate Bipolar transistor c) Properties of tungsten

(a)LED:  Led is light emitting diode. It is a pn junction diode, which emits light when gets activated. When a suitable energy is applied , electron combines with the electron holes  within the device releasing energy in the form of photons.LED lamps have a lifespan and electrical efficiency which are several times longer than incandescent … Read more Discuss the following a) LED b) Insulated Gate Bipolar transistor c) Properties of tungsten

Give an account of following: a) Male and female reproductive organs b) Asexual production c) Binary fission d) Fertilisation

  (a)Male and Female reproductive organ:    The male reproductive organs include a pair of testes (singular, testis), two sperm ducts and a penis. The testes produce the male gametes called sperms. The female reproductive organs are a pair of ovaries, oviducts (fallopian tubes) and the uterus. Ovary produces female gametes called ova (eggs).   (b)Asexual production:  It is a … Read more Give an account of following: a) Male and female reproductive organs b) Asexual production c) Binary fission d) Fertilisation

Discuss the reproductive events in the Human?

Gametogenesis :  The gametogenesis is the formation of gametes i.e. sperm in males and ovum in females. It is also known as spermatogenesis and Oogenesis. Insemination:        Insemination is the deliberate introduction of sperm into a female animal or plant for the purpose of impregnating or fertilizing the female for sexual reproduction. The sperm is introduced … Read more Discuss the reproductive events in the Human?

What is coal bed methane? What is the problem in the extraction of coal bed methane?

Coal bed methane is found in the impermeable stone and is trapped in the coal seams. A significant portion of this gas remain as free gas in the joints and fractures of the coal seam.  Large quantities of gas are adsorbed on the internal surfaces of the micropores within the coal itself Coal bed methane … Read more What is coal bed methane? What is the problem in the extraction of coal bed methane?

Tabulate the difference between mitosis and meiosis.

Draw diagram Basis Mitosis Meiosis Number of divisions One Two – meiosis 1 and meiosis II DNA replication Occurs during interphase Occurs during interphase Role Production of somatic cells for growth of the body Produces gametes or gametogenesis Daughter cell produced Two diploid cells that are genetically identical to parent Four haploid cell(n) containing half … Read more Tabulate the difference between mitosis and meiosis.

A) What is ultrasound waves and outline its benefits? b) Use of Inert gases

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