List of practice Questions

Identify the asexual reproductive structure ?M? in the following diagram:

Identify the cells represent as P, Q, R and S in the given schematic representation of spermatogenesis.

In blind spot of the human eye

A man was suffering from mental illness like depression and insomnia. Identify the drug which is normally used as medicine in such cases.

The conductivity of semiconductor increases with increase in temperature because

According to the VSEPR theory, the shape of $ClO_3^{-}$ would be

1 L of 2 M CH3COOH is mixed with 1 L of 3M C2H5OH to form an ester. The rate of the reaction with respect to the initial rate when each solution is diluted with an equal volume of water will be

Eutrophication causes

The Crystal Field Stabilisation Energy (CFSE) for $[CoCl_6]^{4-}$ is $18000\, cm^{-1}$. The CFSE for $[CoCl_4]^{2-}$ will be-

If $3A + 4B' = $$\begin{bmatrix}7&-10&17\\ 0&6&31\end{bmatrix} $ and $2B - 3A'$ $ \begin{bmatrix}-1&18\\ 4&0\\ -5&-7\end{bmatrix}$ then $B =$

A unit vector perpendicular to the plane containing the vectors $\hat{i} + 2 \hat{j} + \hat{k}$ and $-2 \hat{i} + \hat{j} + 3\hat{k}$ is

Which of the following protozoan parasites causes sleeping sickness?

The nourishing cells in the Seminiferous tubules are

If the angle between $\vec{a}$ and $\vec{b}$ is $\frac{2 \pi}{3}$ and the projection of $\vec{a}$ in the direction of $\vec{b} $ is -2, the $|\vec{a}|$ =

XY - plane divides the line joining the points A (2, 3, - 5) and B (-1, -2, -3) in the ratio

Which is the correct thermal stability order for $H_2E$ (E = O. S. Se. Te and $Po$) ?

Which of the following species is not stable ?

Which of the following is incorrect statement ?

Testa and Tegmen of the seed coat represent

An equiconvex lens has power P it is cut into two symmetrical halves by a plane containing the principal axis. The power of one part will be :

The sides of an equilateral triangle are increasing at the rate of 4 cm/sec. The rate at which its area is increasing, when the side is 14 cm.

Of the total incident solar radiation the percentage Photosynthetically Active Radiation (PAR) captured by the plants

The rate of radioactive disintegration at an instant for a radioactive same of half life $2.2 \times 10^9\,s^{-1}$ is $10^{10} \,s^{-1}$. The number of radioactive atoms in that sample at that instant is,

In a potentiometer experiment, the balancing point with a cell is at a length 240 cm. On shunting the cell with a resistance of 2 $\Omega$, the balancing length becomes 120 cm. The internal resistance of the cell is

Though the electron drift velocity is small and electron charge is very small, a conductor can carry an appreciably large current because