Collect News Paper cuttings related to percentages of any five different situations.

Write any four uses of metals in different situations.

Three dailies A,B,C are published in a city. 20% of the city population read A,16% read B,14% read C,8% read both A and B , 5% both A and C , 4% both B and C ,2% read all the three. Find percentage of population that read atleast one news paper and find the percentage of population who read news paper A only.

Collect news items related to global warming and its impact appearing in newspaper and magazines.

Uranium has two isotopes of masses 235 and 238 units. If both are present in Uranium hexafluoride gas which would have the larger average speed ? If atomic mass of fluorine is 19 units, estimate the percentage difference in speeds at any temperature.

What happens if cost price is selling price? Do we get any such situations in our daily life? It is easy to find profit % or loss % in the above situations. But it will be more meaningful if we express them in percentages. Profit % is an example of increase percent of cost price and loss % is an example of decrease percent of cost price.

In a collection of H-atoms, all the elctrons jump from n = 5 to ground level finally (directly or indirectly), without emitting any line in Balmer series. The number of possible different photons are

The given circuit shows an arrangement of four capacitors A potential difference 30V is applied across the combination. It is observed that potentials at points .A. and .B. differ by 5V. Also if a conducting wire is connected between .A. and .B. electrons will flow from A to B. Of course, we have not connected any wire actually between A and B, we have described only an .if. situation. Potential difference across C_4 is