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Q-1 - Na
Q-2 - JJ Thomson
Q-3 - An atom as equal number of electrons and protons
Q-4 - penicillium
Q-5 - cylindrical body
Section - B
Q-6 - sodium - natrium , Copper - cuprum , Lead - plumbum and Tungsten - tung sten
Q-7 - (i) - Aluminium sulfate , (ii) - Calcium chloride , (iii) - Potassium sulfate , (iv) - Potassium Nitrate
Q-8 - The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus.
Q-9 - a - Dorsal fin . , B - caudal fin , c - Anal fin , d - pelvic fin .
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