Question
Consider the following statements and choose the correct
answer with the help of the codes given below: Assertion (A): Sodium metal is preserved in 'Kerosene Oil'. Reason (R): Sodium becomes very reactive in air. Select the correct answer using the codes given below: Code:Solution
Assertion (A) and Reason (R) both are correct and Reason (R) correctly explains Assertion (A). Sodium metal is preserved in 'Kerosene Oil' because Sodium becomes very reactive in air.

If a + b + c = 12 and ab + bc + ca = 47, and a, b, c are real numbers, find the value of a³ + b³ + c³ − 3abc.
If a + `1/b` = 1 and b + `1/c` =1 , then the value of c + `1/a` is

A sum of Rs. 25,000 is invested in SIP 'G' which offers 7% p.a. simple interest for 7 years. The interest received from SIP 'G' is invested in SIP 'H' w...
If
= 2 then find In a best-of-two chess match between Player X and Player Y, the probability that Player X wins a game is (5/9), and the probability that Player Y loses ...
If 10x2 – 6xy+y² – 4x+4= 0, then find the value of (3x+2y).
If x 2  – 15x + 51 = 0, then determine the value of (x – 5) + {1/(x – 5)}.
For a =-4 and b = 5, value of a² – b² is: