Manganese inhibits calcium translocation in $.......$

In which of the following reactions will cyanide be obtained as a major product?

The functional kidney of a frog tadpole is:

Which of the following liquid mixtures shows a positive deviation from Raoult's law?

If the force is given by $F = at + bt^2$,where $t$ is time,the dimensions of $a$ and $b$ are:

$A$ smooth sphere $A$ is moving on a frictionless horizontal plane with an angular velocity $\omega$ and a linear velocity $v$ of its center of mass. It undergoes an elastic head-on collision with an identical sphere $B$ which is at rest. If there is no friction anywhere,then after the collision,their angular speeds are $\omega_A$ and $\omega_B$ respectively. Then: