The pioneer country in the production of fuel-alcohol is

Which of the following lubricates ligaments or tendons and is an important constituent of synovial fluid of bones?

$\int_{-1}^1 (a x^3 + b x) d x = 0$ for

Drops of liquid of density $d$ are floating half immersed in a liquid of density $\rho$. If the surface tension of the liquid is $T$,then the radius of the drop is

Find the equation of the pair of straight lines that bisect the angles between the lines represented by $ax^2 + 2hxy + by^2 = 0$.

How does the parathyroid hormone $(PTH)$ increase the $Ca^{2+}$ levels in the body?