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Existence of positively charged nucleus was established by:
(1) Positive ray analysis
(2) α -ray scattering experiments
() X-ray analysis
(4) Discharge tube experiments
Ans: α-ray scattering experiments
trailing of mercury
percentage concentration of 18-k gold bracelet, 150 grams
The energy of an electron of 2py orbital is: (1) Greater than that of 2p x orbital (2) Less than that of 2p x orbital (3) Equal to that of 2s orbital (4) Same a
Classify each reaction and give the name of all the chemical formula involved for each number. 1. Na2CO3(s) + SiO2(s) ? Na2SiO3(l) + CO2(g) 2. 2 Mg(NO3)2(s) ? 2 Mg(NO2)2(s) + O2
How standard solutions are prepared in industries
quality of soya milk
Q. Detect the presence of synthetic food colours in the given samples? Objectives After conducting this activity, you will be able to: • describe the kind of natural
What is calgon n phosphate conditioning n which one is better?
why standard enthalpy change of Br2(g) is not zero
Condensation reaction of carbonyl compounds Nucleophilic addition reaction of compounds comprising carbonyl group along with those compounds that have at least one acidic hydro
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