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Ask QuestionPosted by Prashant Mishra 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
1. Water
On dissolving the ash in water it forms a new substance. This change can be written in the form of the following equation: Magnesium oxide (MgO) + Water (H2O) → Magnesium hydroxide [Mg(OH)2 ]
2. Magnesium hydroxide
On dissolving the ash in water it forms a new substance. This change can be written in the form of the following equation: Magnesium oxide (MgO) + Water (H2O) → Magnesium hydroxide [Mg(OH)2 ]
3. Copper sulphate
The brown deposit on the iron nail is copper, another new substance. We can write the reaction as: Copper sulphate solution (blue) + Iron → Iron sulphate solution (green) + Copper (brown deposit)
4. Vinegar (Acetic acid) + Baking soda (Sodium hydrogencarbonate) → Carbon dioxide + other substances
5. Iron
The process of rusting can be represented by the following equation: Iron (Fe) + Oxygen (O2 , from the air) + water (H2O) → rust (iron oxide Fe2O3 )
6. rust
The process of rusting can be represented by the following equation: Iron (Fe) + Oxygen (O2 , from the air) + water (H2O) → rust (iron oxide Fe2O3 )
Posted by ?Sooraj Martin? 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Yellow
Methyl orange is a pH indicator frequently used in titration because of its clear and distinct color variance at different pH values. Methyl orange shows red color in acidic medium and yellow color in basic medium.
Posted by ?Sooraj Martin? 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
- Salts are ionic in nature due to the presence of ions.
- They are brittle, hard and crystalline solids.
- Salt is white, odorless and it has a salty taste.
- Salt water is a good conductor of electricity.
Posted by ?Sooraj Martin? 5 years, 4 months ago
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Gaurav Seth 5 years, 4 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:
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 ?Sooraj Martin? 5 years, 4 months ago
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Swati Garg 5 years, 4 months ago
Posted by ?Sooraj Martin? 5 years, 4 months ago
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Swati Garg 5 years, 4 months ago
Posted by Arpit Mehra 5 years, 4 months ago
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Divijaa Grover 5 years, 4 months ago
Posted by Oshi Rathore 5 years, 4 months ago
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Posted by Ansuman Sahoo 5 years, 4 months ago
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Mann 5045 5 years, 4 months ago
Ansuman Sahoo 5 years, 4 months ago
Posted by Ansuman Sahoo 5 years, 4 months ago
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?Sooraj Martin? 5 years, 4 months ago
Posted by Ansuman Sahoo 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
Silk is a fine, strong, soft and shining fibre produced by silkworms in making their cocoons. Silk is a natural fibre which is obtained from an insect
(called silk moth). So, silk is an animal fibre. Silk fibre
is made of a protein. The soft looking silk yarn is as
strong as a comparable thread of steel.
Silk fibres are converted into silk yarn which is used for making silk cloth.
The rearing of silkworms for obtaining silk is called as Sericulture
Posted by Ansuman Sahoo 5 years, 4 months ago
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Shivam Singh 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
A n s w e r :
The yarn which we use for knitting sweaters or weaving shawls, etc, is called wool. Wool is obtained from the sheep by a long process which involves the following steps:Shearing, Scouring, Sorting. Dyeing, Combing and Spinning
Posted by Ansuman Sahoo 5 years, 4 months ago
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?Sooraj Martin? 5 years, 4 months ago
Posted by Ansuman Sahoo 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
A n s w e r
Ocean
currents are The streams of water flowing
constantly on the ocean surface in a definite direction are called ocean currents. The ocean currents may be warm or cold
Posted by Ansuman Sahoo 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
- The day-to-day conditions of the atmosphere at a place with respect to elements like humidity, temperature, wind speed, rainfall, etc. is called the weather of that place.
- Weather can be cloudy, sunny, rainy, stormy or clear. It is a part of the natural phenomenon which maintains the equilibrium in the atmosphere.
Posted by Ansuman Sahoo 5 years, 4 months ago
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Ansuman Sahoo 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
Climate
Climate is the average weather in a place over many years.
climate is that average weather in an exceeding place over a few years. Whereas the weather would be modifications or alterations in the matter of mere hours. The environment takes thousands of years to alter. However, it is dynamic and rising at an alarming rate over the past few years
Posted by Ansuman Sahoo 5 years, 4 months ago
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Gaurav Seth 5 years, 4 months ago
The female silk moth lays eggs. The larvae also known as caterpillar or silkworm hatches out from the egg and grows in size. As soon as the caterpillar gets ready to develop into pupa, it first weaves a net to hold itself and swings its head from side to side
Posted by ?Sooraj Martin? 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Acidity is caused when an excess of acids is produced in the stomach. An antacid, such as milk of magnesia, act as a base, and react with excess acid and neutralize its effect, thus giving relief.
Posted by ?Sooraj Martin? 5 years, 4 months ago
- 1 answers
Yogita Ingle 5 years, 4 months ago
Acidity is caused when an excess of acids is produced in the stomach. An antacid, such as milk of magnesia, act as a base, and react with excess acid and neutralize its effect, thus giving relief.
Posted by Priyanshu Biswal 5 years, 4 months ago
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Posted by ???????????????????????? ????????? 5 years, 4 months ago
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Posted by Sandra Manoj 5 years, 4 months ago
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Yogita Ingle 5 years, 4 months ago
Glycerol is a sweet, syrupy fluid substance obtained from animal fats and oils or by the fermentation of glucose. It is used as a solvent, sweetener, and antifreeze and in making explosives and soaps. Glycerol consists of a propane molecule attached to three hydroxyl (OH) groups. Also called glycerin, glycerine.
Posted by Tagar Meher 5 years, 4 months ago
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Ayush Parida 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
Anthrax is a serious infectious disease caused by gram-positive, rod-shaped bacteria known as Bacillus anthracis. Anthrax can be found naturally in soil and commonly affects domestic and wild animals around the world. It causes rarely in human beings.
Posted by Abc Xyz 5 years, 4 months ago
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Shivam Singh 5 years, 4 months ago
Suman Suman 5 years, 4 months ago
Gaurav Seth 5 years, 4 months ago
- There are certain plants in nature which do not have chlorophyll and hence cannot produce their own food.
- These plants uses heterotrophic mode of nutrition to derive food for their survival.
- Cuscuta (Amarbel) is a yellow tubular plant twisting around the stem and branchesof a tree that does not have chlorophyll and hence cannot make its own food.
- They climb on other trees known as host plant and absorb the readymade food. Therefore plants like Cuscuta are known as parasite.
Posted by Prashant Mishra 5 years, 4 months ago
- 3 answers
Gaurav Seth 5 years, 4 months ago
Iron pillar near the Qutub Minar in Delhi is famous for the following facts. Which of these facts is responsible for its long stability?
(a) It is more than 7 metres high.
(b) It weighs about 6000 kg.
(c) It was built more than 1600 years ago.
(d) It has not rusted after such a long period.
Soln:
The answer is (d) It has not rusted after such a long perio
Posted by Mandar Dhuri 5 years, 4 months ago
- 2 answers
Yogita Ingle 5 years, 4 months ago
Autotrophs are the plants which produce their own food by using water, carbon di oxide, and sunlight in form of sugars.
And it is used to produce energy.
Some examples are algae,bacteria, and some plants.
Insectivorous plants are not complete autotrophs but are partially autotrophs.
They digest insects but still produce their own source of energy with light and water.
Rupkatha Choudhury 5 years, 4 months ago
Posted by Rihan Ansari 5 years, 4 months ago
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Rupkatha Choudhury 5 years, 4 months ago
Divya Patkar 5 years, 4 months ago
Posted by Shree Dhar Mishra 5 years, 4 months ago
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Posted by Kashish Kashish 5 years, 4 months ago
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Shivam Singh 5 years, 4 months ago
Yogita Ingle 5 years, 4 months ago
The alimentary canal includes the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and ****.
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Narra Nikhil 5 years, 4 months ago
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