Which one of the following is a non-reducing carbohydrate?

Doping silicon with boron produces a

$A$ particle of mass $M$ is at a distance $a$ from the surface of a thin spherical shell of uniform mass $M$ and radius $a$. Which of the following statements is true regarding the gravitational field and potential inside the shell?

In a meter bridge,a $30 \Omega$ resistance is connected in the left gap and a pair of resistances $P$ and $Q$ in the right gap. Measured from the left,the balance point is $37.5 \text{ cm}$ when $P$ and $Q$ are in series,and $71.4 \text{ cm}$ when they are in parallel. The values of $P$ and $Q$ (in $\Omega$) are:

The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order :
$K_2CO_3(I), MgCO_3(II), CaCO_3(III), BeCO_3(IV)$

The formula for exponential population growth is