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Ask QuestionPosted by Riya ... 5 years, 6 months ago
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Posted by Sindhusuta Singhdeo 5 years, 6 months ago
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Meghna Thapar 5 years, 6 months ago
A ship made of iron and steel doesn't sink in water, but while the same amount of iron and steel in the form of sheet would sink because it is not completely solid and has full of air filled in it. This phenomena behind the Archimedes ' principal. So if a boat weighs 1,000 pounds (or kilograms), it will sink into the water until it has displaced 1,000 pounds (or kilograms) of water. Provided that the boat displaces 1,000 pounds of water before the whole thing is submerged, the boat floats.
Posted by Akhil Gondaliya 5 years, 6 months ago
- 3 answers
Yogita Ingle 5 years, 6 months ago
The process of making of food by green plants in the presence of sunlight and chlorophyll is known as photosynthesis. Photosynthesis is the combination of two words- Photo + Synthesis. ‘Photo’ means light and ‘Synthesis’ means to make.
Posted by Manju Sharma 5 years, 6 months ago
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Yogita Ingle 5 years, 6 months ago
Soil is formed by weathering. Weathering is the process of breaking down of rocks by the action of wind, water and climate. Formation of even one inch of soil takes many years.
Soil contains humus, water, clay, sand and gravel.
Posted by Rishi Raj Meena 5 years, 6 months ago
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𝑺𝒖𝒓𝒂𝒃𝒉𝒊 𝑺𝒂𝒖𝒎𝒚𝒂 5 years, 6 months ago
Posted by Aesh Mehar 5 years, 6 months ago
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Posted by Misbah ` 5 years, 6 months ago
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Neha Patel 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
The reaction between an acid and a base to give a salt and water is known as a neutralisation reaction. Acids and bases react with each other to nullify the effect of each other. Let us consider a simple reaction. Take a sample of NaOH which is a base and add drops of dilute HCl.
The reaction will be as follows:
NaOH (aq) + HCl → NaCl(aq) + H2O(l)
Therefore while suffering from acidity it is prescribed to take antacid which are bitter in taste i.e. they are base. And on entering the body the base neutralise the excess acid released into the stomach and convert it into salt and water.
Posted by Faathimah Tuzzahrah 5 years, 6 months ago
- 2 answers
Neha Patel 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
Pseudopodia is the motion food collecting structure of amoeba. Pseudopodia is a temporary cytoplasm-filled projection of an unicellular protist.
Pseudopodium which consist of Pseudopodes are mostly found in amoeboids in order to perform motility and grabbing the food.
Pseudopodes has micro-filaments that have the ability to contract and extent due to the reversible assembly of actin sub units. Amoeba uses the pseudopods to grab the food by surrounding it completely when the food approaches near it.
Posted by Riya ... 5 years, 6 months ago
- 1 answers
Yogita Ingle 5 years, 6 months ago
It hurts when someone pulls anybody's hair but not when one goes for a hair cut
because our hairs are made up of dead cells when we take a haircut due to this reason that they are made up of dead cells they doesn't hurt us but when hairs are pulled it hurts as our hairs are attached with the skin at our top of the head, when hairs are pulled the skin gets hurt at top of the head and feels pain at that time.
Posted by K Samveda 5 years, 6 months ago
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Neha Patel 5 years, 6 months ago
Posted by Sapan Thakur 5 years, 6 months ago
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Yogita Ingle 5 years, 6 months ago
When electric current flows through a conducting wire, the temperature of wire increases. This is called heating effect of electric current.
Devices Which Work on Heating Effect of Electric Current: Incandescent bulb is an example of a device which works because of the heating effect of electric current. The filament of bulb is made of tungsten. Tungsten has very high melting point and that is the reason it is used in electric bulb. Moreover, argon gas is filled inside the bulb. Argon prevents the filament from catching fire. Electric iron, water heater, geyser, toaster, etc. are some other devices which work on heating effect of electric current.
Posted by Pragya Kunwar 5 years, 6 months ago
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Yogita Ingle 5 years, 6 months ago
Conduction can occur in solids_liquids and gases. Explain why solids and liquids are better conductors of heat than gases. The answer is simple: their atoms, or molecules that make them up, are closer together, so they can transfer energy between them much more efficiently.
𝑺𝒖𝒓𝒂𝒃𝒉𝒊 𝑺𝒂𝒖𝒎𝒚𝒂 5 years, 6 months ago
Posted by Khwaish Tuteja 5 years, 6 months ago
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Meghna Thapar 5 years, 6 months ago
Iodine is a dark purpley-black solid at room temperature. It is purple in a hydrocarbon solvent. Iodide ions are colourless, so for example a solution of sodium iodide is colourless. Iodine is not very soluble in water, therefore the iodine reagent is made by dissolving iodine in water in the presence of potassium iodide. This makes a linear triiodide ion complex with is soluble that slips into the coil of the starch causing an intense blue-black color. The symbol for iodine is I.
Posted by Pragya Kunwar 5 years, 6 months ago
- 1 answers
Yogita Ingle 5 years, 6 months ago
Physical Changes in Burning Candle: On heating, candle wax melts and form liquid wax. It is a physical change. Since it again turns into solid wax on cooling. This is a reversible change.
Chemical Changes in Burning Candle: When you light the candle, the wax present near the wick will melt. Wick absorbs the liquid wax. The liquid wax vaporizes due the heat produced by the flame. This wax vapor near to flame burns and gives new substances like Carbon Dioxide, Carbon soot, water vapours, heat and light. This is an irreversible change.
Posted by Jainisha Zala 5 years, 6 months ago
- 2 answers
Yogita Ingle 5 years, 6 months ago
Leaves are the food factories of plants. The synthesis of food in plants occurs in leaves.
Therefore, all the raw materials (Water, Carbon dioxide and sunlight) must reach there.
Water and minerals are transported to the leaves by the vessels which run like pipes throughout the root, the stem, the branches and the leaves.
The leaves have a green pigment called chlorophyll which helps leaves to capture the energy of the sunlight.
This energy is used to synthesise (prepare) food from carbon dioxide and water. This process is termed as ‘Photosynthesis’.
Posted by S.Palanimuthu Sekar 5 years, 6 months ago
- 1 answers
𝑺𝒖𝒓𝒂𝒃𝒉𝒊 𝑺𝒂𝒖𝒎𝒚𝒂 5 years, 6 months ago
Posted by Mohit Gujjar 5 years, 6 months ago
- 4 answers
Jainisha Zala 5 years, 6 months ago
Posted by Riya ... 5 years, 6 months ago
- 3 answers
Yogita Ingle 5 years, 6 months ago
Cotton clothes are thin and do not have space in which air can be trapped. Thus, cotton clothes do not prevent heat coming out of our body. Woollen clothes keep us warm during winter because wool is a poor conductor of heat and it has air trapped in between the fibres.
Anjali Bansal 5 years, 6 months ago
Posted by Rizwana Khan 5 years, 6 months ago
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Kritika Pal 5 years, 6 months ago
Posted by Pragya Kunwar 5 years, 6 months ago
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Kritika Pal 5 years, 6 months ago
Yogita Ingle 5 years, 6 months ago
Some plants eat insects. Such plants are called insectivorous plants. They trap and digest the insects. Pitcher plant is the example of an insectivorous plant. In pitcher plant the leaf is modified to form a pitcher like structure. The bright colour of the pitcher makes it very attractive to insects. Inside the pitcher; there are several hair-like structures. These hairs direct the trapped insects downwards. When an insect sits on the pitcher of the plant, the lid closes and the insect gets trapped inside the pitcher. The insect is then digested by the enzymes secreted by the cells of the plants.
Posted by Rekha Kumari 5 years, 6 months ago
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Posted by Kishan Tiwari Tiwari 5 years, 6 months ago
- 1 answers
𝑺𝒖𝒓𝒂𝒃𝒉𝒊 𝑺𝒂𝒖𝒎𝒚𝒂 5 years, 6 months ago
Posted by Maahil Shah 5 years, 6 months ago
- 1 answers
Meghna Thapar 5 years, 6 months ago
There are four types of natural silk produced around the world: Mulberry silk, Eri silk, Tasar silk and Muga silk. Mulberry silk contributes around as much as 90% of silk production, with the mulberry silkworm generally being regarded as the most important. Mulberry silk is the most common among the many kinds of silk. It makes up 90% of the silk supply in the world. This popular kind is produced by the bombyx mori silkworms which are fed from the mulberry bush (thus the name). Since it is a common kind of silk, acquiring it is easy. Silk is obtained from the cacoon of the silkworm . Silkworm are fed on the leaves of the mulberry trees. Each worm spins a continuous thread up to 800 metre long to make a cocoon. The cocoon is boiled in water to kill the silkworm alive and then unwound to get silkfibre.
Posted by Priyam Varshney 5 years, 6 months ago
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Posted by Basant Das 5 years, 6 months ago
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Jainisha Zala 5 years, 6 months ago
Posted by Chaitali Baravakar 5 years, 6 months ago
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Nivedya?? Manoj 5 years, 6 months ago
Posted by Maahil Shah 5 years, 6 months ago
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Dhanesh Pratap Singh 5 years, 6 months ago
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