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Ask QuestionPosted by Kaira Soni 7 years, 1 month ago
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Posted by Ajeet Biradar 7 years, 1 month ago
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Yogita Ingle 7 years, 1 month ago
Combustion is a chemical process in which a substance reacts with oxygen to give off heat. Some substances may also give light along with heat during combustion. A substance which can undergo combustion is called a combustible substance. A combustible substance is also called fuel. It can be solid, liquid or gas.
Posted by Meenakshi Srangal 7 years, 1 month ago
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Anu S 7 years, 1 month ago
Posted by Anita Shetty 7 years, 1 month ago
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Ghausiya Noor 7 years, 1 month ago
Posted by Vivek Tiwari 7 years, 1 month ago
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Yogita Ingle 7 years, 1 month ago
Metabolism comprises of two major parts; one is anabolism and the other catabolism. The Catabolism process is the action of the set of metabolic pathways that breaks down molecules into smaller units that are either oxidized to release energy or used in other anabolic reactions. The process involves the breakdown of large molecules such as polysaccharides, lipids, nucleic acids and proteins into smaller units like monosaccharides, fatty acids, nucleotides, and amino acids, respectively.
Posted by Hardi Shah 7 years, 1 month ago
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Neha Gurjar 7 years, 1 month ago
Posted by Aman Mathur 7 years, 1 month ago
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Meghna Thapar 5 years, 6 months ago
Ionic compounds are compounds made up of ions. These ions are atoms that gain or lose electrons, giving them a net positive or negative charge. Metals tend to lose electrons, so they become cations and have a net positive charge. Ionic compounds have high points of melting and boiling and appear to be strong and brittle. Ions may be single atoms, such as sodium and chlorine in common table salt (sodium chloride) or more complex groups such as calcium carbonate.
Posted by Gourav Singh 7 years, 1 month ago
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Meghna Thapar 5 years, 6 months ago
A positive object brought near a neutral insulator polarizes its molecules. There is a slight shift in the distribution of the electrons orbiting the molecule, with unlike charges being brought nearer and like charges moved away. Since the electrostatic force decreases with distance, there is a net attraction. Insulators tend to be at opposite ends of the triboelectric series while metals tend to be more in the center. So, insulators tend to become more easily charged when rubbed by almost anything material that's more in the middle of the triboelectric series.
Posted by Pradeep Chouhan 5 years, 8 months ago
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Meghna Thapar 5 years, 6 months ago
Decibel (dB), unit for expressing the ratio between two physical quantities, usually amounts of acoustic or electric power, or for measuring the relative loudness of sounds. One decibel (0.1 bel) equals 10 times the common logarithm of the power ratio. The decibel (dB) is a logarithmic unit used to measure sound level. It is also widely used in electronics, signals and communication. The dB is a logarithmic way of describing a ratio. The ratio may be power, sound pressure, voltage or intensity or several other things.
Posted by Amit Raj 7 years, 1 month ago
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Posted by Sharan Kumar 7 years, 1 month ago
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Meghna Thapar 5 years, 7 months ago
Conservation of natural resources is now usually embraced in the broader conception of conserving the earth itself by protecting its capacity for self-renewal. Particularly complex are the problems of nonrenewable resources such as oil and coal (see energy, sources of ) and other minerals in great demand. Natural resources are available in fixed quantity and they are non – renewable, 8. Natural resources are getting scarce with the increasing population, so it is essential to conserve them. This empowers us as well as our future generation to utilise the natural resources to the full extent.
Posted by Kshithijh Shreepal Kojapady 7 years, 1 month ago
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Kshithijh Shreepal Kojapady 7 years, 1 month ago
Posted by Reena Ratnawat 7 years, 1 month ago
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Posted by Shubham Singh 7 years, 1 month ago
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Meghna Thapar 5 years, 7 months ago
An airplane or aeroplane (informally plane) is a powered, fixed-wing aircraft that is propelled forward by thrust from a jet engine, propeller or rocket engine. ... The Wright brothers invented and flew the first airplane in 1903, recognized as "the first sustained and controlled heavier-than-air powered flight". In 1896, the newspapers were filled with accounts of flying machines. Wilbur and Orville noticed that all these primitive aircraft lacked suitable controls. They began to wonder how a pilot might balance an aircraft in the air, just as a cyclist balances his bicycle on the road.
Posted by Shubham Singh 7 years, 1 month ago
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Posted by Shivam Kumar 5 years, 8 months ago
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Yogita Ingle 7 years, 1 month ago
Force can be defined as an external agent capable of changing the state of rest or motion of a particular body. It has a magnitude and a direction.
In the centimetre gram second system of unit of i.e. the CGS unit force is expressed in dyne, and in the standard international system of unit it is expressed in Newton (N).
Posted by Divyansh Tomar 7 years, 1 month ago
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Yogita Ingle 7 years, 1 month ago
- When girls reach the age of adolescence they enter into the age when they are capable of reproduction.
- The reproductive age in girls begins right form the age of 10 to 12 years and ends at the age of 45 to 50 years.
- At the onset of puberty, the ovaries in girls starts to mature. Every month one ovum gets matured and then gets released by the ovaries. This procedure happens once in 28 to 30 days approximately.
Posted by Arunima Dolui 7 years, 1 month ago
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Arunima Dolui 7 years, 1 month ago
Posted by Abhiraj Pandit 7 years, 1 month ago
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Yogita Ingle 7 years, 1 month ago
A star is a large celestial body having its own light. The sun is the nearest star from us. Where as a constellation is a man made group of stars which when connected by lines resemble some mythological figure. There are twelve signs of zodiac, viz. Aries, Taurus, Gemini, Cancer, Virgo, Leo, Libra, Scorpio, Capricorn, Sagittarius, Aquarius and Pisces. There are numerous other constellations, e.g. Great Bear, Cassiopeia, Ursa Minor, Orion, etc.
Posted by Royal Girl 7 years, 1 month ago
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Meghna Thapar 5 years, 6 months ago
The process of rusting is a combustion reaction, similar to fire. Left in contact with oxygen, iron will react with the oxygen to form rust. Unlike fire, though, the reaction is much slower and does not create a flame. Rusting is not a combustion process. Combustion is a rapid chemical reaction of inflammable substance with oxygen involving the production of heat and light. Hence,rusting is not called as combustion process.
Posted by Happy Singh 7 years, 1 month ago
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Posted by Devanshi Patra 7 years, 1 month ago
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Yogita Ingle 7 years, 1 month ago
Friction is caused by the interaction between the surfaces which are in contact. Friction is caused by the irregularities on the two surfaces which are in contact. The irregularities on both surfaces tend to lock into each other and this resists the motion of the object. The nature of the surface (smoothness or roughness) affects the friction.
Posted by Arshdeep Singh 7 years, 1 month ago
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Posted by Pranjali Gautam 7 years, 1 month ago
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Posted by Disha Varshney 7 years, 1 month ago
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Posted by Vaibhav Bharti 7 years, 1 month ago
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Meghna Thapar 5 years, 7 months ago
Cell theory was eventually formulated in 1839. This is usually credited to Matthias Schleiden and Theodor Schwann. However, many other scientists like Rudolf Virchow contributed to the theory. Three scientists are credited with the development of cell theory. Matthias Schleiden observed that all plants were made of cells; Theodor Schwann observed that all animals were also made of cells; and Rudolf Virchow observed that cells only come from other cells.
Posted by Abhishek Yadav 7 years, 1 month ago
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Posted by Param Kella 7 years, 1 month ago
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Posted by Swastik Surve 7 years, 1 month ago
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Meghna Thapar 5 years, 10 months ago
Uses of Electroplating:
- It is widely used in industry for coating metal objects with a thin layer of a different metal.
- It resists corrosion.
- It gives a shiny appearance to the metal on which it is done.
Posted by Isha Kumre 7 years, 1 month ago
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Ayush Dwivedi 7 years, 1 month ago
Falguni Sharma 7 years, 1 month ago
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