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Ask QuestionPosted by Heema Mawai 6 years, 11 months ago
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Raj Saha 6 years, 11 months ago
Posted by Khushi Tiwari 6 years, 11 months ago
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Riddhi Dhurve 6 years, 11 months ago
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Pushp Raj 6 years, 11 months ago
Riddhi Dhurve 6 years, 11 months ago
Nandini Khubalkar 6 years, 11 months ago
Posted by Sk Sahil 6 years, 11 months ago
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Pawan Pandey 6 years, 11 months ago
Posted by Sanya Agrawal 6 years, 11 months ago
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Pawan Pandey 6 years, 11 months ago
Riddhi Dhurve 6 years, 11 months ago
Naman Gupta 6 years, 11 months ago
Posted by Akash Kumar 6 years, 11 months ago
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Posted by Suhani Arora 6 years, 11 months ago
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Meghna Thapar 5 years, 6 months ago
The dispersion occurs in prism but not in glass slab because of the geometric design. ... They travel a very small distance in the glass slab to meet the second interface. But, after being refracted through the second interface, all colours start moving parallel to each other which recombine together to give white light. After refraction at two parallel faces of a glass slab, a ray of light emerges in a direction parallel to the direction of incidence of white light. As rays of all colours emerge in the same direction, i.e., the direction of the incidence of white light, there is no dispersion.
Posted by Jatin Prajapati 6 years, 11 months ago
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Mabiya Ali 6 years, 11 months ago
Posted by Piyush Sharma 6 years, 11 months ago
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Rajesh Shriwastava 6 years, 11 months ago
Posted by Kanchan Pal 6 years, 11 months ago
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Meghna Thapar 5 years, 6 months ago
The ears are the sense organs which help us in hearing sound. It consists of three compartments – outer ear, middle ear and inner ear.
i. The outer ear consists of a broad part called pinna having a long passage called ear canal. At the end of the ear canal is a thin, elastic and a circular membrane called ear drum. It is also called tympanum. The outer ear contains air.
ii. The middle ear contains three small and delicate bone called hammer, anvil and stirrup. These bones are linked to one another. The middle ear transmits the amplified pressure variations received from the sound wave to the inner ear.
iii. In the inner ear, the pressure variations are turned into electrical signals by the cochlea. These electrical signals are sent to the brain via the auditory nerve, and the brain interprets them as sound.
Posted by Sanya Makhija 6 years, 11 months ago
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Posted by Saloni Prajapati 6 years, 11 months ago
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Posted by Priyanka Patil 6 years, 11 months ago
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Meghna Thapar 5 years, 10 months ago
Some of the beneficial effects of microorganisms are as follows:
- Microorganisms are used in the production of alcohol, wine and acetic acid.
- They are used in making curd, bread and cake.
- They are used in the preparation of medicines called antibiotics.
- They are used in agriculture to increase the fertility of soil by fixing atmospheric nitrogen gas.
- They clean up the environment by decomposing the organic matter of dead plants, dead animals and animal wastes into harmless and useful simple substances.
Posted by Aniket Tiwari Aniket Tiwari 6 years, 11 months ago
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Meghna Thapar 5 years, 6 months ago
It is necessary to separate the oxygenated blood from mixing with deoxygenated blood as mammals and birds have high energy needs because they constantly require energy to maintain their body temperature.
Amphibians and many reptiles have three chambered heart. They can tolerate some mixing of the oxygenated and de-oxygenated blood streams. The fish has a two chambered heart. Oxygenation of the blood takes place in the gills. The oxygenated blood from the gills is supplied to the body parts of the fish where oxygen is utilized and carbon dioxide enters into it making it deoxygenated. The deoxygenated blood returns to the heart to be pumped into gills again.
Thus, single circulation is a type of circulatory system in which the blood passes through the heart only once in one complete cycle of the body.
Double circulation is a circulatory system in which the blood travels twice through the heart in one complete cycle of the body.
Posted by Gurdeep Singh 6 years, 11 months ago
- 1 answers
Gaurav Seth 6 years, 11 months ago
Nuclear membrane is the membrane that surrounds the nucleus. It separates the nucleus from cytoplasm. The nuclear
membrane is porous membrane is also porous and allows the movement of materials between the cytoplasm and the
inside of the nucleus.
Posted by Jerin Peter 6 years, 11 months ago
- 1 answers
Posted by Jerin Peter 6 years, 11 months ago
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Gaurav Seth 6 years, 11 months ago
Microorganisms are friendly as well as harmful. Friendly Microorganisms:Microorganisms are used for various purposes by human beings as well as in nature. Some of the beneficial effects of microorganisms are as follows: i. Microorganisms are used in the production of alcohol, wine and acetic acid. ii. They are used in making curd, bread and cake. iii. They are used in the preparation of medicines called antibiotics. iv. They are used in agriculture to increase the fertility of soil by fixing atmospheric nitrogen gas. v.They clean up the environment by decomposing the organic matter of dead plants, dead animals and animal wastes into harmless and useful simple substances.
Posted by Pawan Pandey 6 years, 11 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
In thermodynamics, heat means energy which is moved between two things when one of them is hotter than the other. That is, heat is defined as a spontaneous flow of energy (energy in transit) from one object to another, caused by a difference in temperature between two objects; therefore, objects do not possess heat. Heat and work are two different ways of transferring energy from one system to another.
Posted by Jerin Peter 5 years, 8 months ago
- 3 answers
Anay Viswanath 6 years, 11 months ago
Yogita Ingle 6 years, 11 months ago
- Electroplating is used on car parts with a thin layer of chromium for a smooth texture and appearance. They are also done on various other appliances customized according to the buyer’s request.
- As metals are prone to natural effects such as corrosion, a thin layer of non-corrosive metals covering the corrosive one can help metals and appliances last longer than usual. The non-corrosive metals such copper, chromium and nickel are basically used these days to spread over corrosive metals like steel and iron.
- Electroplating can be used in other areas where we can reduce friction by introducing a certain kind of metal over another.
- Electroplating also helps to protect from radiation, abrasion and many other natural phenomena just by imparting the desired characteristics to a surface of the metals which lacks those properties.
Posted by Iqbal Singh 6 years, 11 months ago
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D.J Alok 6 years, 11 months ago
Posted by Pawan Pandey 6 years, 11 months ago
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Meghna Thapar 5 years, 6 months ago
When an acid and a base are placed together, they react to neutralize the acid and base properties, producing a salt. The H(+) cation of the acid combines with the OH(-) anion of the base to form water. The compound formed by the cation of the base and the anion of the acid is called a salt. A gas evolution reaction is a chemical process that produces a gas, such as oxygen or carbon dioxide. In the following examples, an acid reacts with a carbonate, producing salt, carbon dioxide, and water, respectively.
Posted by Kiran Meena 6 years, 11 months ago
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Posted by Raeesa Parveen 6 years, 11 months ago
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Anay Viswanath 6 years, 11 months ago
Posted by Mukesh Sharma 6 years, 11 months ago
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Disha .......❤ 6 years, 11 months ago
Posted by Chanakya Prajapati 6 years, 11 months ago
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Yogita Ingle 6 years, 11 months ago
We can protect ourselves from lightning by
(a) switching off and disconnecting all heavy electrical appliances.
(b) Not bathing under running tap water.
(c) Not standing near metallic poles.
Posted by Ishank Gupta 6 years, 11 months ago
- 1 answers
Yogita Ingle 6 years, 11 months ago
Food can be stored in plastic containers because:
(a) Plastics are non-reactive.
(b) Plastics are light and strong.
(c) Plastics are durable.
Posted by Aman Yadav 6 years, 11 months ago
- 1 answers
Yogita Ingle 6 years, 11 months ago
The substances which have very low ignition temperature and can catch fire easily with a flame are called inflammable substances. L.P.G has low ignition temperature and catches fire easily so L.P.G labeled as inflammable substance.
Posted by Nishant Kumar 6 years, 11 months ago
- 1 answers
Yogita Ingle 6 years, 11 months ago
The hormones are poured directly into the blood and carried throughout the body by blood circulatory system. The hormones act on specific tissue or specific organ in the body called target sites.
Posted by Shriram Kumar 6 years, 11 months ago
- 3 answers
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Pushp Raj 6 years, 11 months ago
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