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Six protons are found in the nucleus of:
(1) Boron
(2) Lithium
(3) Carbon
(4 )Helium
Ans: Carbon
decreasing order of +M.E. group
Question: Does the number of steps in a reaction process affect the enthalpy change of the overall reaction? Hypothesis: To compare experimental data to functionality of He
what are grignard reagants ? how are tthey prepared is laboratory ? what makes them so important in synthetic chemistry?
how to calculate equevalent mass
Addition catalysed by base - Aldehydes and Ketones In the existence of a base one equivalent of an alcohol reacts along with only one equivalent of the carbonyl compound. The p
Consider the reaction A → P. The change in concentration of A with time is shown in the given plot: (i) Predict the order of the reaction. (ii) Derive the mathematical expr
Q. Write phosphate conditioning method for water softening with suitable chemical reactions. How it is different from soda lime method. Ans. Phosphate condition
what are commercial cells?
What is the maximum number of electrons which can be accommodated in an atom in which the highest principal quantum number value is 4: (1) 10 (2) 18 (3) 32
why halogens are both +R and -I groups?
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