Notes and Study material for Exams
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
(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
(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
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
Blood circulates in our body and it transport substance like digested food from the small intestine to the other parts of the body. It carries Oxygen from lungs to the cells of the body. It also transport waste for removal from the body. Major components of Blood are as follows: Plasma: Plasma is the liquid … Read more
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
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
Climate change is a result of rapid Global Warming. The increase of Average temperature of earth is termed as Global warming. Global warming is a natural process which has been accelerated by anthropogenic activities. Because of this earth is not getting time to adjust to this change. This is causing Climate Change. Effect on … Read more