VedClass-Data Entry

Which one of the following is resistant to enzyme action?

$A$ bullet of mass $2\, g$ has a charge of $2\, \mu C$. Through what potential difference must it be accelerated,starting from rest,to acquire a speed of $10\, m/s$?

The plates of a parallel plate capacitor are charged up to $100\;V$. $A$ $2\;mm$ thick plate is inserted between the plates. Then,to maintain the same potential difference,the distance between the plates is increased by $1.6\;mm$. The dielectric constant of the plate is:

Let $A$ and $B$ be two symmetric matrices of the same order. Then,the matrix $AB - BA$ is

Sodium is heated in air at $300^{\circ} C$ to form $X$. $X$ absorbs $CO_2$ and forms $Na_2CO_3$ and $Y$. Which of the following is $Y$?