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Ask QuestionPosted by Mrinmoy Bora 7 years, 3 months ago
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Gokul Raam 7 years, 3 months ago
A sore that develops on the lining of the oesophagus, stomach or small intestine. or see this url
https://www.google.co.in/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=2ahUKEwjs1bjK7KDfAhXQfX0KHWmDB4AQjRx6BAgBEAU&url=https%3A%2F%2Fwww.mayoclinic.org%2Fdiseases-conditions%2Fpeptic-ulcer%2Fsymptoms-causes%2Fsyc-20354223&psig=AOvVaw25QJdvQKZnMDW9nBesvGEB&ust=1544929343419098
Posted by Hega Hega 7 years, 3 months ago
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Vaishnavi Tiwari 7 years, 3 months ago
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Amrita Tiwary 7 years, 3 months ago
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Kumari Divya 7 years, 3 months ago
Posted by Kavi Wadhwa 7 years, 3 months ago
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Gaurav Seth 7 years, 3 months ago
Simple distillation
Simple distillation is used when the boiling points of chemicals in a mixture having large differences (more than 25°C).
No fractionating columns used as the difference in the boiling point of mixture is large.
E.g. Process used in separating kerosene and petrol
Fractional distillation
Fractional distillation is used when the boiling points of chemicals in a mixture are close to each-other, usually within 77°F (25°C).
Fractionating columns used to separate the mixtures.
E.g. Process used in the separation of Crude Oil into useful fractions.
Posted by Vivek Thakur 7 years, 3 months ago
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Posted by Sachin Mishra 7 years, 3 months ago
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Princy Tyagi 7 years, 3 months ago
Posted by Parampreet Kaur 7 years, 3 months ago
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Parampreet Kaur 7 years, 3 months ago
Md Muwasin 7 years, 3 months ago
Yogita Ingle 7 years, 3 months ago
Evolution is the gradual changes occurring over generations after generations, during which different species of plants, animals, birds and insects gradually change some of their physical characteristics. These changes include the different aspects of life like genetic drift, mutation, natural selection, thought and technology.The main factors responsible for the evolutionary changes are certain environmental changes and predation pressures
Posted by Azad Singh Dewra 7 years, 3 months ago
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Amrita Tiwary 7 years, 3 months ago
Amit Mishra 7 years, 3 months ago
Aditi _Chouhan_ 7 years, 3 months ago
Posted by Aparna Kumari 7 years, 3 months ago
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Amrita Tiwary 7 years, 3 months ago
Yogita Ingle 7 years, 3 months ago
Kinetic energy = {tex}\begin{array}{l}\frac12\\\end{array}{/tex} mv2
this means that K.E.is directly proportional to m(mass) as well as v(velocity or speed). So, if the velocity is doubled then the kinetic energy of the body will also be doubled.
Posted by Sonu Kumar 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
Mass of one atom of an element = atomic mass X (1/12th) of the mass of one atom of carbon.
Or
atomic mass = mass of one atom of an element / (1/12th) of the mass of one atom of carbon.
Easy way to calculate atomic mass of oxygen atom.
The Proton number Z = 8
The Neutron number N = 8
The atomic mass of the oxygen atom is given by 15.9994 amu i.e. nearly 16.
Posted by Anusha Batra 7 years, 3 months ago
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Yogita Ingle 5 years, 11 months ago
Treatment of a disease depends upon the type and the causative agents of a disease however in general these are the methods how a disease can be treated:
- The first and the foremost thing is prevention and the only way to protect yourself is to get a vaccine against a particular infection.
- Antibiotics are used against a bacterial infection.
Diseases like cancer and leukemia have special treatments such as radiation, chemotherapy etc.
Posted by Ay K 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
Air is considered as a mixture because it exhibits following properties:
- Each component present in air retains its properties.
- Each component can be separated by simple physical processes.
- The components do not have any fixed proportion. All gases are present in different amount. Example, in greener area—more oxygen and water vapour is present; near industrial area—air consists of lot of impurities and smoke suspended in it.
Posted by Ay K 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
Different pigments from the extracts of flower petals – chromatography.
Chromatography is a technique of separation of substances which are very close in their molecular weight but differ in their molecular sizes. Since pigments from flower petals will be very similar in their components, it is expected that their molecular weights will also be similar. But they have different molecular sizes as an inherent property. Thus chromatography will be able to separate these pigments.
Posted by Ravi Kumar 7 years, 3 months ago
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Amrita Tiwary 7 years, 3 months ago
Posted by Amit Kanojiya 7 years, 3 months ago
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Gaurav Seth 7 years, 3 months ago
GMC is Genetically Modified Crops.
Genetically modified crops are the crops in which a gene from some other organism may be another plant or a microorganism is inserted into the plant to get desired characteristics such as disease resistance, response to fertilizers, product quality and high yields.
Significance-
- GM crops are more productive and have a larger yield.
- Offer more nutritional value and better flavor
Posted by Rahul Rahul 7 years, 3 months ago
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Punit Singh 7 years, 3 months ago
Posted by Jayavel Arumugam 7 years, 3 months ago
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Gaurav Seth 7 years, 3 months ago
Elections in India are considered democratic because of the following reasons:
- Every citizen has been given a right to vote i.e. to choose their representative, without discrimination and their vote being considered equal.
- It offers the citizens and parties to content elections freely and fairly.
- It also provides the citizens a variety of choices to choose their representatives.
- It presents the citizens with a choice to choose their leader at regular intervals.
Posted by Md Khalik 7 years, 3 months ago
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Riya Rathore 7 years, 3 months ago
Yogita Ingle 7 years, 3 months ago
Universal Law of gravitation was formulated by Sit Issac Newton.
It states that
Every body in universe attracts every other body with a force which is directly proportional to the product of their masses and inversely proportional to the square of distance between them. The force acts along the line joining the two bodies
Posted by Arpit Mishra 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
A dead body in water sinks when water enters into the lungs. Once submerged, the body stays underwater for sometime. Then there will be release of gases like methane, carbon dioxide and hydrogen sulphide due to the bacteria present. Because of this the upper portion of the body (torso), which contains the most bacteria, bloats more than the head and limbs. The most buoyant body parts rise first, leaving the head and limbs behind. As the density of the head is more than that of water, it remains immersed in water.
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📕Queen 📕Queen 7 years, 3 months ago
Shivani Singh 5 years, 11 months ago
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Posted by Jaishree Sanodiya 7 years, 3 months ago
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Madhumitha Raghavendran 5 years, 11 months ago
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Yogita Ingle 7 years, 3 months ago
The near point of the eye is the minimum distance of the object from the eye, which can be seen distinctly without strain. For a normal human eye, this distance is 25 cm.
The far point of the eye is the maximum distance to which the eye can see the objects clearly. The far point of the normal human eye is infinity.
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