Which of the following pairs of an animal and a plant represents endangered organisms in India?

The maximum value of ${x^4}{e^{ - {x^2}}}$ is

In the following common emitter circuit,if $\beta = 100$,$V_{CE} = 7 \, V$,$V_{BE} = \text{Negligible}$,and $R_C = 2 \, k\Omega$,then find $I_B$ in $mA$.

An example of a double salt is

$A$ body of mass $5 \ kg$ makes an elastic collision with another body at rest and continues to move in the original direction after the collision with a velocity equal to $\frac{1}{10}$th of its original velocity. Then the mass of the second body is (in $kg$)

Which of the following carries glucose from the digestive tract to the liver?