List of practice Questions

The diagram of Labeo rohita is given below. Identify the parts labelled A, B, C, D, E, F, G.
Which one of the following pairs is an example for lateral meristem?
Two smalI spheres of masses $M_1 $ and $M_2$ are suspended by weightless insulating threads of lengths $ L_1$ and $ L_2$. The spheres carry charges $Q_1$ and $Q_2$ respectively. The spheres are suspended such that they are in level with one another and the threads are inclined to the vertical at angles of $\theta_1 $ and $\theta_2$ as shown. Which one of the following conditions is essential, if $\theta_1 = \theta_2$ ?
The temperature of a gas contained in a closed vessel of constant volume increases by $1^\circ$C when the pressure of the gas is increased by $1\%$. The initial temperature of the gas is ..........
The spin only magnetic moment of $Mn^{+4}$ ion is nearly____
There is a uniform electric field of intensity $E$ which is as shown. How many labelled points have the same electric potential as the fully shaded point?
The condition for the line $y = mx +c$ to be a normal to the parabola $y = 4ax$ is _______
The set of quantum numbers for the outermost electron for copper in its ground state is ___________
The set of real values of x for which $ f(x) = \frac {x}{log\, x}$ increasing, is
$P_4O_{10}$ is the anhydride of
If $y'' - 3y' + 2y = 0$ where $y(0) = 1$, $y'(0) = 0$, then the value of $y$ at $x \,= log_e \,2$ is
All pathogens are parasites but all parasites are not pathogens. Majority of the parasites confer benefits to the host.
For measurement of potential difference, potentiometer is preferred in comparison to voltmeter because
In a parallel plate capacitor, the capacity increases if
The orbital frequency of an electron in the hydrogen atom is proportional to
Which of the following relation is true?
The equation of a simple harmonic progressive wave is given by $ y = A \,sin \,(100\, \pi t - 3x) $ . Find the distance between $ 2 $ particles having a phase difference of $ \frac{\pi}{3} $ .
Keto-enol tautomerism is not observed in
The molecule which has zero dipole moment is
The binding energy per nucleon, for nuclei with atomic mass number $A > 100$ decreases with $A$. The nuclear forces are weak for heavier nuclei.
Treatment of acetaldehyde with ethyl magnesium bromide and subsequent hydrolysis gives
Among the following, the formula of saturated fatty acid is
For an opaque body coefficient of transmission is
The correct order of dehydration of alcohols is
Which is not an example of common ion effect?