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Q. Describe the Half -Life property of radioactive decay? Ans. The decay of a nucleus is a random event. It is impossible to predict which nucleus will decay and when.
What is the effect of more electronegative atom on the strength of ionic bond: (1) Decreases (2) Increase (3) Decreases slowly (4) Remains the same Ans: Increase
Fe3+ + e ------> Fe2+
Describe a method that could be used to separate the components of the following a) Sand and iron filings b) Sawdust and lead pellets c) Salt and glass particles d) Silt (water and
Q. Write short notes on fabrication of rubber objects. Sol. Fabrication of Rubber: in the row condition rubber is composed of molecules of great length and molecular weight.
Charectaristic of covalent bond
to study the presence of aroma taste,ph value and tannic acid of diffrent tea leaves
What are electrons
In polar covalent molecule, one atom gets positive charge and the other one takes negative charge as known as dipole.
hittorf rule
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