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how to find atomicity of an element
Q. why is sodium aluminates is a better coagulates then ferrous sulphates or alum? Ans. Sodium aluminates (NaAlO 2 ): It is better coagulant than FeSO 4 and alum because i
There are 13 electrons in an element whose nucleus comprise 14 neutrons. Obtain atomic number and atomic weight of this element. If atomic weight of the isotope of above element is
Electron enters the sub-shell for which (n+l) value is minimum. This is enunciated as: (1) Hund's rule (2) Aufbau principle (3) Heisenberg uncertainty principle (4) P
Wet test for basic radicals
The allylic carbons are indicated with an asterisk (*).
Which forms a crystal of Nacl: (1) Nacl molecules (2) Na + and cl - ions (3) Na andcl atoms (4) None of the above Ans: Na + and cl - ions
a metal forms 2 oxides. the higher oxide has 80% metal. 0.72g of lower oxide gave 0.8g of higher oxide when oxidised. show that law of multiple proportion is valid?
hybridization in hydroxyl group
Manufacture of cement Cement is a composite mixture of calcium silicates & calcium aluminates which is a popular material used for construction. 1) Raw materials : Raw material
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