QIIA) Answer in 1 or 2 sentences: [Any 6]
1. Write the molecular formula of water and carbon dioxide.
2. Write the valency of Chlorine in CCl4 and magnesium in MgCl2.
3. What are the constituents elements of Brass and Bronze?
4. How class E fire is extinguished?
5. What is acid rain?
6. Give two examples of complex compound.
7. How many neutron and electrons are present in Na ?
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