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What is vulcanization The process of vulcanization was discovered by Charles Good Year in 1839. He found that when natural rubber is heated with sulphur, its tensile strength,
Which of the following represents the correct sets of the four quantum numbers of a 4d electron: (1) 4,3,2,1/2 (2) 4, 2, 1, 0 (3) 4,3,-2+1/2
Each element has a unique number of protons. This unique number is known as the element's atomic number . All atoms of a given element have the same atomic number. For example:
all
Q. Illustrate about nuclear particle? In 1932 Rutherford with Chadwick demonstrated the existence of the neutron a nuclear particle having no charge but with nearly the same
Define Interfacial potential differences? What is the source of an open-circuit, zero-current cell potential? When no electric current passes through the cell, the electric pot
The number of orbitals in 2p sub-shell is : (1) 6 (2) 2 (3) 3 (4) 4 Ans: 3
Why magnesium does not impart any colour to Bunsen flame while calcium does
priming and foaming
Desiccants (drying agents) can often be regenerated by heating. A desiccant that is commonly regenerated is CaSO 4 ?2H 2 O:
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