The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is
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The solution for x of the equation ∫2xtt2−1dt=2π is:(A) 2 (B) π (C) 23 (D) 22
For real x, let f(x)=x3+5x+1, then
Which one of the following reactions of Xenon compounds is not feasible ?
The set representing the correct order of ionic radius is
Statement 1: The variance of first n even natural numbers is 4n2−1Statement 2: The sum of first n natural numbers is (n2n+1and the sum of squares of first n natural numbers is (n(n+1)62n+1
Two liquids X and Y form an ideal solution. At 300K, vapour pressure of the solution containing 1 mol of X and 3 mol of Y is 550 mm Hg. At the same temperature, if 1 mol of Y is further added to this solution, vapour pressure of the solution increases by 10 mm Hg. Vapour pressure (in mmHg) of X and Y in their pure states will be, respectively
Standard entropy of X2,Y2andXY3 are 60, 40 and 50 JK−1mol−1, respectively. For the reaction,
The function f(x)=tan−1(sinx+cosx)is an increasing function in