RULEMATH | MATH ONLINE/DIRECT CLASS | MATH WEBSITE | SCIENCE CLASS 10, PHYSICS CLASS 11 AND 12

Class 10 Students can go through this as a ready reckoner for their Science Board Examination  All answers are given in blue 1. What happens when Silver chloride is put under sunlight? Silver metal and chlorine gas are formed . 2. Acid used in refining of petroleum to remove sulphur and other compounds Sulphuric acid 3. The magnetic field lines de to straight wire carrying a current are ___ Circular: Concentric circles with centre at the axis of the conductor. 4. When more than one resistors are in series, the quantity that remains same in them is ________ Current:  Resistors in series have same current 5. The percentage of solar radiation absorbed by all the green plants for the process of photosynthesis is about _________  1 percent : The green plants convert this into food energy and make this energy available to the rest of the ecosystem. 6. The property of a proton that can change while it moves freely in a magnetic field Momentum When a proton moves in a magnetic fi...

Assignment covering important concept based sums  1. Differentiate f(x) = x – 3 sin x 2. Find the magnitude of a x b if a =2i+j+3k and b=3i+5j-2k 3. Find the unit vector parallel to the resultant of the vectors î + ĵ – k̂ and î – 2ĵ + k̂ is 4. Write the following in roster form. (i) {x ∈ N : x 2  < 121 and x is a prime} 5. Prove that the relation ‘friendship’ is not an equivalence relation on the set of all people in Chennai. 6. Find the range of the function 1/(2Cosx-1)   7. Prove that √3 is an irrational number. 8. Solve for x (i) |3 – x| < 7 9. If n (A ∩ B ) = 3 and n(A ∪ B ) = 10 , then find n(P(A ∆ B)). 10. If a and b are the roots of x^2+√2x+3=0, form a quadratic polynomial with roots 1/a and 1/b  11. Solve x 2  + 3x – 2 ≥ 0 12. Find the zeros of the polynomial function f(x) = 4x 2  – 25 13. Solve 23x < 100 when (i) x is a natural number, (ii) x is an integer. 14. If x 4  + x + 1 is a factor of the polynomial 3x 3  + 8x 2  ...