The monomer of neoprene is

Let $f(x)=e^x$,$g(x)=\sin ^{-1} x$ and $h(x)=f(g(x))$,then $\frac{h^{\prime}(x)}{h(x)}$ is equal to

In the Davisson and Germer experiment,the velocity of electrons emitted from the electron gun can be increased by

Match the following columns and select the correct option:

$(a)$ Eosinophils	$(i)$ Immune response
$(b)$ Basophils	$(ii)$ Phagocytosis
$(c)$ Neutrophils	$(iii)$ Release histaminase enzyme
$(d)$ Lymphocytes	$(iv)$ Release granules containing histamine

$(a)\quad (b)\quad (c)\quad (d)$

The pulley and spring are massless,and friction is absent everywhere. The $5\,kg$ block is released from rest. The speed of the $5\,kg$ block when the $2\,kg$ block leaves contact with the ground is (take the force constant of the spring $K = 40\,N/m$ and $g = 10\,m/s^2$):

Which of the following is not a steroid hormone?