Important Question for Class 10 Math and Science

 1. P and Q are the two points on the ground on either side of the pole. If the angle of elevation observed from point P and Q is 30 degrees and 60 degrees respectively the distance between the point P and Q is 84√3 find the height of Pole. 

2. Calculate the area bounded by the line x + y = 10 and both the co-ordinate axes.

3. A man earns ₹600 per month more than his wife. One-tenth of the man’s salary and l/6th of the wife’s salary amount to ₹1,500, which is saved every month. Find their incomes.

4. Atomic number of a few elements are given below 10, 20, 7, 14 

(a) Identify the elements 

(b) Identify the Group number of these elements in the Periodic Table 

(c) Identify the Periods of these elements in the Periodic Table 

(d) What would be the electronic configuration for each of these elements? 

(e) Determine the valency of these elements