Posted by Satyendra Singh 3 months, 2 weeks ago
Posted by Ranjay Singh 7 months ago
In an earthen pot, water gets evaporated quickly through the pores. Cooling is caused by evaporation. Some heat energy is utilised during the process of evaporation. Since this energy is taken from the water itself, it leads to a lowering of temperature in the remaining amount of water.
Posted by Puspanjali Kamila 7 months, 1 week ago
Density of water varies with temperature. It is highest at 4 oC. At low tempreature, When ice is formed, density is reduced. So At low temprature in ocean, A layer of Ice floats on water and below this layer, all aquatic species can survive. At high temeperature, Warm water of ocean causes vast currents which circulate heat from equator to temperate zone. Hence, play role in controlling climate of whole earth.
Posted by Ujjwal Kumar 8 months, 1 week ago
Posted by Semanti Bhowmik 11 months, 4 weeks ago
The elements which display properties of both metals and non-metals are classified as metalloids. In the Periodic Table, they separate metals from the non-metals. For eg. Silicon, Arsenic etc.
Posted by Sreejith Nair 1 year, 1 month ago
Posted by Anil Mahto 1 year, 1 month ago
Posted by Yuvraj Patel 1 year, 4 months ago
Posted by Harsh Bansal 1 year, 5 months ago
According to Dobereiner, all elements occurred in groups of three, when arranged in increasing order of atomic masses. He referred to these groups as triads. In a traid the elements had similar chemical properties.
Traids of the Dobereiners classification:
Dobereiner’s law of triads states that, the atomic mass of the middle element of a triad is the arithmetic mean of the atomic masses of the other two elements.
Example: In the triad of lithium, sodium and potassium. The atomic mass of lithium is 7 and the atomic mass of potassium is 39. The average of masses of lithium and potassium gives atomic mass of sodium 23.
Posted by Shamita Yadav 1 year, 6 months ago
Posted by Yahya Ali Sheikh 1 year, 7 months ago
Oxidation is defined as the process of being oxidized or oxidizing. It refers to the loss of electrons in a reaction by an atom, an ion or a molecule. Oxidation occurs when the oxidation state of an atom, ion or the molecule rises up. The reduction is the process exactly opposite of oxidation wherein the electrons are gained and the oxidation state of a molecule, an atom or an ion goes low.
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