Question

Q1) Answer the following: 1. When food gets spoiled, it produces a foul smell. Shall we call this change a chemical change?
2. Is neutralisation reaction a chemical change? Explain
3. What do you understand by a Redox reaction? Explain with an example.
4. When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place
5. Define a. Endothermic reaction and b. exothermic reaction
6. Why is it advisable not to shut all the doors and windows during a storm?
7. Explain how lightning takes place
8. Describe / Define the following: a. Tornado: b. Cyclone: c. Storm:
9. I kept an empty bottle made up of plastic inside a refrigerator. After a few hours, when I opened the refrigerator, I found the bottle collapsed. Explain
10. When strong / high speed wind blows, an umbrella held upright at times get upturned. Explain the reason.

Answer 1

Answer:

meow, y should i answer that for 5 points??????

Explanation:

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AND SAY THANKS PLZZ

Answer 2

Answer:

I see from the current columns of the daily press that "Professor Plumb, of the University of Chicago, has just invented a highly concentrated form of food. All the essential nutritive elements are put together in the form of pellets, each of which contains from one to two hundred times as much nourishment as an ounce of an ordinary article of diet. These pellets, diluted with water, will form all that is necessary to support life. The professor looks forward confidently to revolutionizing the present food system."

Now this kind of thing may be all very well in its way, but it is going to have its drawbacks as well. In the bright future anticipated by Professor Plumb, we can easily imagine such incidents as the following: