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Lavesh Bohra 8 years, 3 months ago
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Rishi Yadav 8 years, 4 months ago
Amrita Maurya 8 years, 4 months ago
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Rishi Yadav 8 years, 4 months ago
Posted by Monika Singh Mona 8 years, 4 months ago
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Rishi Yadav 8 years, 4 months ago
Posted by Om Karve 8 years, 4 months ago
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Posted by Yuvraj Singh 8 years, 4 months ago
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Naveen Sharma 8 years, 3 months ago
Chromatography is a versatile separation technique widely used to obtain pure compounds from mixtures. All chromatographic techniques depend on a stationary phase, usually a finely divided solid or coated solid, that a mobile phase, usually a gas or liquid, moves through.
Sharran Nandakumar 8 years, 4 months ago
<a data-ved="0ahUKEwiZ_oXOy4HWAhXLu48KHUyRABkQ9QEIKTAA" href="https://www.google.co.in/imgres?imgurl=https://upload.wikimedia.org/wikipedia/commons/thumb/6/63/Preparative_HPLC.svg/400px-Preparative_HPLC.svg.png&imgrefurl=https://en.wikipedia.org/wiki/Chromatography&h=213&w=400&tbnid=hAg_00cSuCxF5M:&tbnh=112&tbnw=211&usg=__AIFk95IYpBPK4H7keofS0d12Vk8=&vet=1&docid=d6zkvX2IT-mgcM&sa=X&ved=0ahUKEwiZ_oXOy4HWAhXLu48KHUyRABkQ9QEIKTAA" id="hAg_00cSuCxF5M:" jsaction="fire.ivg_o" role="link" tabindex="0" tag="bia"></a>
Chromatography is a physical method of separation that distributes components to separate between two phases, one stationary (stationary phase), the other (the mobile phase) moving in a definite direction. The eluate is the mobile phase leaving the column.
Posted by Kunal Dabhane 8 years, 4 months ago
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Ashbi Iqbal 8 years, 4 months ago
Posted by Ravi Garg 8 years, 4 months ago
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Yuvraj Singh 8 years, 4 months ago
Posted by Sumit Sharma 8 years, 4 months ago
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Posted by Manash Das 8 years, 4 months ago
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Naveen Sharma 8 years, 4 months ago
{tex}\sqrt {x+15}+\sqrt x = 15 {/tex}
{tex}=> \sqrt {x+15} = 15- \sqrt x {/tex}
squaring both sides, we get
{tex}=> x+15 = 225 + x + 30\sqrt x{/tex}
{tex}=> 30\sqrt x = 210{/tex}
{tex}=> \sqrt x = 7{/tex}
squaring both sides, we get
{tex}=> x = 49 {/tex}
Posted by Joykumar Singh 8 years, 4 months ago
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Posted by Simranjit Kaur Mehra 8 years, 4 months ago
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Amar Kumar 8 years, 4 months ago
Work is the energy required to move an object against a force. Work is equal to the force times the distance the object moves.
W = F * s where W is work, F is force, and s is the displacement.
The SI unit for work is the joule.The SI units for work are the joule (J) or newton-meter (N * m) .
Posted by Jemsonykb Thangboi 8 years, 4 months ago
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Manish Gandhi 8 years, 4 months ago
A substance from which something is made or can be made is called Material.
E.g.: Paper, Plastic etc...
Posted by Jemsonykb Thangboi 8 years, 4 months ago
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Manish Gandhi 8 years, 4 months ago
The science of the composition, structure, properties, and reactions of matter, especially of atomic and molecularsystems is called Chemistry.
Posted by Ankita Mondal 8 years, 4 months ago
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Posted by Alka Khan Khan 8 years, 4 months ago
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Naveen Sharma 8 years, 4 months ago
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Transpiration |
Guttation |
| 1. | In transpiration, water is lost in the form of water vapour. | In guttation, water is lost in the form of liquid droplets. |
| 2. | Water lost is pure water. | Water lost contains salts, sugars and amino acids. |
| 3. | Water is transpired through stomata, cuticle and lenticels. | Water is lost through hydathodes (chalk glands.) |
| 4. | It takes place in present of light when the temperature is higher. | It occurs during the cold hours of early morning and night. |
| 5. | It takes place in dry conditions which favour loss of water through diffusion. | It takes place in humid conditions which do not favour loss of water through diffusion. |
| 6. | It is controlled by a number of factors, the opening and closing of stomata being the main one. | It continues as long as adequate water supply in maintained and the conditions are cold and humid. |
| 7. | Excessive transportation under deficit water supply leads to wilting. | It never results in wilting as it does not take place under deficit water supply. |
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