Science

QUICK REVISION   TOPIC: CATALYST Definition:       Increases or decreases the rate of reaction without actually taking part in the reaction.   Types:      On the basis of phase of reactants: Same phase : Homogenous catalyst; eg: In Hydrogenation use of Raney nickel catalyst   Different phase : Heterogenous catalyst; Eg in Ozone depletion Chlorofluorocarbons (CFCs) like … Read more

  QUICK REVISION SERIES   ALLOTROPES OF CARBON: Concept of Allotropes:       An element, in different forms, having different physical properties but similar chemical properties is known as allotropes of that element. Carbon has three well known allotropes which are graphite, diamond and buck minster fullerene. These are formed by carbon atoms. Allotrope Type Properties Graphite Each … Read more

TYPES OF MISSILE AND ASSOCIATED CONCEPTS: Brahmos Supersonic cruise missile, BrahMos, is being developed with Russia as a private joint-venture. BrahMos is a multi-platform cruise missile enabling it to strike from various types of land, sea and air-based platforms. It is among the fastest supersonic cruise missiles in the world with speeds ranging between Mach … Read more

INTEGRATED MISSILE DEVELOPMENT PROGRAMME:   Missile Type Remark Prithvi Short range Surface to Surface ballistic missile – The Prithvi missile is a family of tactical surface-to-surface short-range ballistic missiles (SRBM) and is India’s first indigenously developed ballistic missile. Development of the Prithvi began in 1983, and it was first test-fired on 25 February 1988 from Sriharikota, … Read more

The environment-friendly bio-toilets for passenger coaches were developed jointly by Indian Railways and Defence Research and Development Organisation (DRDO).In the bio-toilet fitted coaches, human waste is collected in bio digester tanks below the toilets and is decomposed by a consortium of anaerobic bacteria.By the process of hydrolysis, acetogenesis, acidogenesis and methanogenesis, the anaerobic bacteria converts … Read more

The GSLV-III or Geosynchronous Satellite Launch Vehicle Mark III is a launch vehicle under development. Geosynchronous Satellite Launch Vehicle is a launch vehicle under development. ISRO is developing this to enable India to launch its heavier satellites without dependence on foreign rockets and providers. The GSLV MK-III is a 3 stage vehicle and will have … Read more

Features of S 400: It is among the best air defence systems. It is based on a multifunctional system that can drop missiles at different speeds. It can target aircrafts (up to 5th generations), cruise and ballistic missiles by supersonic and hypersonic missiles of the system. It can address the incoming targets at a range … Read more

Yamanaka genes are group of four essential genes in our body that are responsible for regenerating old cells or growing new cells.They are also know as OSKM(Oct4,Sox2,Klf4 &Myc) & are named after Japanese scientist Shinya Yamanaka. Significance of Yamanaka Genes: Major significance is that the introduction of these genes can convert adult cells into pluripotent stem … Read more

  Coking coal Non coking coal High carbon content Less carbon content Less moisture and less sulphur content High sulphur content   Can be used in Iron and steel Industry Cannot be used due to high sulphur content It is used to create coke. Making coke from this coal is not economical as traces of … Read more

Euthanasia is the practice of ending the life of a person in a painless way. It is also known also as mercy killing or assisted suicide, it is usually practiced on a terminally ill person. Euthanasia may be legal or illegal, depending upon a country’s jurisdiction. For example, euthanasia is legal in countries like Belgium, … Read more