Blood enters the heart because of......

$\lim _{x \rightarrow 0} \left( \frac{x \cdot 10^x - x}{1 - \cos x} \right)$ is equal to

Select the correct increasing order of boiling points of alcohols,amines,and carboxylic acids of comparable molar mass from the following.

An unbiased coin is tossed to get $2$ points for turning up a head and $1$ point for the tail. If three unbiased coins are tossed simultaneously,then the probability of getting a total of an odd number of points is

The resultant gate and its Boolean expression for the given circuit is

Choanocytes are present in