Class 12th

Product 'A' of following sequence of reaction is

What will be the major product of following sequence of reactions?

Which of the following is most stable?

A spherically symmetric charge distribution is considered with charge density varying

as $\rho \left(r\right)=\{\begin{array}{cc}\hfill {\rho }_0\left(\frac{3}{4}-\frac{r}{R}\right)for\hfill & \hfill r\le R\hfill \\ \hfill zero\hfill & \hfill forr>R\hfill \end{array}$

Where, r(r < R) is the distance from the centre O (as shown in figure). The electric field at point P will be:

The distance between an object and a screen is $100\mathrm{c}\mathrm{m}$ . A lens can produce real image of the object on the screen for two different positions between the screen and the object.

The distance between these two positions is $40\mathrm{c}\mathrm{m}$ . If the power of the lens is close to $\left(\frac{\mathrm{N}}{100}\right)\mathrm{D}$ where $\mathrm{N}$ is an integer, the value of $\mathrm{N}$  is           

The time period of oscillation of a simple pendulum of length L suspended from the roof of a vehicle, which moves without friction down an inclined plane of inclination , is given by:

Which amongst the given plots is the correct plot for pressure (p) vs density (d) for an ideal gas?

The speed verses time graph for a particle is shown in the figure. The distance travelled (in $\mathrm{m}$ ) by the particle during the time interval $\mathrm{t}=0$ to $\mathrm{t}=5\mathrm{s}$ will be $\dots .$ .

Given below are two statements : One is labeled as Assertion (A) and the other is labeled as Reason (R).

Assertion (A) : Clothes containing oil grease statins cannot be cleaned by water wash.

Reason (R) : Because the angle of contact between the oil/grease and water is obtuse.

In the light of the above statements, choose the correct answer from the option given below.