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The pH of a 0.1 molar solution of the acid HQ is 3. The vale of the ionization constant, Ka of this acid is :

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The first two terms of a geometric progression add up to 12. The sum of the third and the fourth terms is 48. If the terms of the geometric progression are alternately positive and negative, then the first term is

A capillary tube (A) is drooped in water. Another identical tube (B) is dipped in a soap water solution which of the following shows the relative nature of the liquid columns in the two tubes ?

Two aeroplanes I and II bomb a target in succession. The probabilities of I and II scoring a hit correctly are 0.3 and 0.2, respectively. The second plane will bomb only if the first misses the target. The probability that the target is hit by the second plane is

$∫cosx+3 sinxdx $ equals:

Let $P(r)=πR_{4}Q r$ be the charge desntiy distribution for a solid sphere of radius R and total charge Q. for a point 'p' inside the sphere at distance \displaystyle{r}_{}

Given $P(x)=x_{4}+ax_{3}+cx+d$such that $x=0$is the only real root of \displaystyle{P}'{\left({x}\right)}\text{}=\text{}{0}.\text{}{I}{f}\text{}{P}

The normal to a curve at $P(x,y)$ meets the x-axis at G. If the distance of G from the origin is twice the abscissa of P, then the curve is a

Knowing that the Chemsitry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements in incorrect ?