Acidity of diprotic acids in aqueous solutions increases in the order

Which of the following is an example of somatic hybridization?

Let $f(0)=1, f(0.5)=\frac{5}{4}, f(1)=2, f(1.5)=\frac{13}{4}$ and $f(2)=5$. Using Simpson's rule,$\int_0^2 f(x) dx$ is equal to

$A$ potential difference is applied across the ends of a metallic wire. If the potential difference is doubled,then the drift velocity

In how many ways can $8$ identical balls be distributed into $3$ distinct boxes such that no box remains empty?

$A$ body of mass $m$ is moving in a circle of radius $r$ with a constant speed $v$. The force on the body is $\frac{mv^2}{r}$ and is directed towards the centre. What is the work done by this force in moving the body over half the circumference of the circle?