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Ask QuestionPosted by Mantasha Raza 5 years, 9 months ago
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Posted by Deepti Bala 5 years, 9 months ago
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Yogita Ingle 5 years, 9 months ago
The Sun appears red during sunrise and sunset because the rays from the Sun has to travel a longer distance compared to the noon. Sun rays contain seven colors out of which red color has the highest wavelength. Thus, red colour is not scattered away by the atmosphere and reaches the Earth while other colors like blue etc get scattered way. Thus, the Sun appear reddish.
Posted by L.Aldrin Godfrey 5 years, 9 months ago
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Diya Subhesh 5 years, 9 months ago
Saksham Singh 5 years, 9 months ago
Posted by Arti Sable 5 years, 9 months ago
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Saksham Singh 5 years, 9 months ago
Posted by Rakada Prasad 5 years, 9 months ago
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Posted by Shaikh Noman 5 years, 9 months ago
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Anwesh Thakur 5 years, 9 months ago
Posted by Shaikh Noman 5 years, 9 months ago
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Meghna Thapar 5 years, 9 months ago
Those changes in which new substances are formed are called chemical changes. The properties of new substances formed in a chemical changes are entirely different from those of the original substances.
- The formation of biogas from the animal waste is a chemical change.
- The reaction between baking soda and vinegar is a chemical change because it forms carbon dioxide as a new substance.
Posted by Kavita Gaira 5 years, 9 months ago
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Posted by Nitesharnav 2016 5 years, 9 months ago
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Meghna Thapar 5 years, 9 months ago
Magnets were discovered by chance by an old shepherd named Magnes who lived in ancient Greece. Magnes used to take his herd of sheep and goats to a nearby mountain for grazing.
Posted by Kiran Shekhawt 5 years, 9 months ago
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Posted by Vedant Parab 5 years, 9 months ago
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Meghna Thapar 5 years, 9 months ago
Reuse means using the same things again. The plastic jars in which we buy various food items such as jams, pickles, oils, ghee, etc. can be used later on for storing things like salt, spices, sugar, tea-leaves, etc. Example - A diary can be made from old invitation cards. Mats can be made from old clothes.
Posted by Sakshi Jha 5 years, 9 months ago
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Posted by Suhani Naik 5 years, 9 months ago
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Devapriya K 5 years, 9 months ago
Ankita Shaw 5 years, 9 months ago
Posted by Varsha Rani 5 years, 9 months ago
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Meghna Thapar 5 years, 9 months ago
Vermicomposting is a method of making compost from kitchen wastes by using redworms. Vermicompost is high quality manure which can be prepared by digging a pit in the ground or by using a wooden box or a metal bin.
The kitchen garbage containing fruit and vegetable peels, left-over cooked food, tea-leaves, etc. are the organic wastes used in vermicomposting.
Formation of vermicompost:
- Dig a pit about 30 centimeters deep in the ground at a place which is neither too hot nor too cold.
- The kitchen garbage is spread over the chicken mesh or sand layer. Other waste materials such as green leaves, dried stalks, husk, pieces of paper, newspaper and cardboard are added.
- Sprinkle some water in the pit to make the layer of garbage wet. The layer of garbage should be kept loose so that it has sufficient air and moisture.
- Redworms are put into the pit or box.
- Cover the pit loosely with a gunny bag or an old sheet of cloth or a layer of grass.
- Redworms eat the rotting garbage as food. They do not have teeth body have a special structure called gizzard which helps in grinding the food. Powdered egg shells are usually mixed with the kitchen waste in the pit. The excretions of redworms keep on collecting in the pit which make up vermicompost.
- Put some fresh kitchen waste in one corner of the pit so that all the redworms shift towards the corner of the pit. Remove the vermicompost from the vacated part of the pit and dry it in sunshine for few hours.
Posted by Geeta Kulkarni 5 years, 9 months ago
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Meghna Thapar 5 years, 9 months ago
Tungsten breaks easily because the harder a material is, the more brittle it becomes.
Posted by Khushi Prajapati 5 years, 9 months ago
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Posted by Randeep Singh 5 years, 9 months ago
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Suhani Naik 5 years, 9 months ago
Posted by Parul Kushwha 5 years, 9 months ago
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Posted by Randeep Singh 5 years, 9 months ago
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Randeep Singh 5 years, 9 months ago
Posted by Sneha Soren 5 years, 9 months ago
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Meghna Thapar 5 years, 9 months ago
- The production of new organisms from the existing organisms of the same species is known as reproduction.
Posted by Vipin Yadav 5 years, 9 months ago
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Meghna Thapar 5 years, 9 months ago
A freely suspended magnet always points in the north-south direction because the earth behaves as if a giant bar magnet is buried at its centre and it is the force exerted by the earth’s imaginary magnet which acts on the freely suspended magnet.
Posted by Kushagra Ranjan 5 years, 9 months ago
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Meghna Thapar 5 years, 9 months ago
A freely suspended magnet align itself always along the North-South of the earth.
Posted by Anurag Pandey 5 years, 9 months ago
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Suhani Naik 5 years, 9 months ago
Meghna Thapar 5 years, 9 months ago
The bar magnets in pairs should be stored by separating them with a piece of wood and keeping soft iron bars across their opposite ends to prevent loss of magnetism.
Posted by Drmanisha Suryawanshi 5 years, 9 months ago
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Avni Bansal 5 years, 9 months ago
Posted by Debosmita Das 5 years, 9 months ago
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Meghna Thapar 5 years, 9 months ago
The leaves of the plants contain green coloured pigment called chlorophyll which can trap sunlight energy for photosynthesis. The leaves are called the food factories.
Posted by Harman Singh 5 years, 10 months ago
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Meghna Thapar 5 years, 9 months ago
A pinhole camera works on the principle that light travels in straight lines.
The pinhole camera consists of a closed box having a small pinhole in the front and a translucent screen made of butter paper at the back which acts as a screen to receive the image of an object. The pinhole camera is used to view the images of various objects like trees and buildings, etc.
Posted by Keshav Singh Rajput 5 years, 10 months ago
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Keshav Singh Rajput 5 years, 9 months ago
Suhani Naik 5 years, 9 months ago
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Suhani Naik 5 years, 10 months ago
Posted by Gaurav Verma 5 years, 10 months ago
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Khush Dev 5 years, 9 months ago
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Posted by Himanshi Maitra 5 years, 10 months ago
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Meghna Thapar 5 years, 10 months ago
A fibre is defined as one of the delicate, hair portions of the tissues of a plant or animal or other substances that are very small in diameter in relation to there length. A fiber is a material which is several hundred times as long as its thick. However, when there is more than one fibre interlocked, it is called yarn. A long continuous strand of interlocked or twisted fibres is yarn - which could be used for knitting, weaving, braiding, crocheting, embroidering, stitching, textiles etc.
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