Compare renewable and non-renewable sources of energy with examples. Why is solar energy considered a renewable source?
Describe an experiment & show that a current-cari vina conductor produces a magnetic field around it.
Define Ohm’s law. How is the resistance of a conductor affected if its length is doubled and its area of cross-section is halved?
Explain why the sky appears blue. What causes the red appearance of the sky during sunrise and sunset?
State the laws of refraction. Explain what happens to a ray of light passing through a rectangular glass slab.
How does atomic size change as you move down a group and across a period in the periodic table? Explain with examples.
Explain the difference between saturated and unsaturated hydrocarbons. Give an example of each.
Write the chemical equations for the reactions of iron with steam and copper with dilute hydrochloric acid. Explain the observations.
Explain why hydrochloric acid reacts with zinc to produce hydrogen gas but does not react with copper.
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