Question

NaOH + HCL
--------->
MaoHct.
3. Show by chemical eq
uation when an acid react a metal. Qolube
4. Deduce a mathematical expression to measure the strength of an electric current? Joule
5. Find the voltage applied across a wire of resistance 4422 so as to allow a current of 5A through it?
6. How is heat produced 'H' related to the current flow (i), resistance of the wire (R) and time of flow (T) ?
7. Explain the term alkali citing some suitable examples.
8. The PH of a solution is less than 7. State its nature an acidic or basic or a neutral.
9.Calculate the
9 power consumed by a 1200w toaster in 2 minutes?
10.What happens when dil.
HCL reacts with sodium hydrogen carbonate or the backing soda?
11. Show by mathematical equation how current c, charge q and time t are related.
12. Write the chemical formula for baking soda and washing soda.
13. A
housewife found that the cake prepared by her is hard and small in size. Which ingredient has she forgotten
to add that would have made the cake fluffy? Cite the reason.
14. Name the acid present in ant-string. Give its chemical formula. Also, suggest a method for relief from the
pain in ant-string.​

Answer 1

Answer:

3 point answer is acid + metal → salt + hydrogen