List of practice Questions

Two pendulums of lengths 100 cm and 121 cm start vibrating. At some instant the two are at the mean position in the same phase. After how many vibrations of the longer pendulum will the two be in the same phase at the mean position again?
A child swinging on a swing in sitting position, stands up, then the time period of swing will
The fundamental frequency of a closed pipe is 220 Hz. If $\frac{1}{4}$ of the pipe is filled with water, the frequency of the first overtone of the pipe now is
The rate constant of a reaction is $\text{mol} \,L^{-}\, S^{-1}$. The reaction is
Which one of the following is an example for pseudo first order reaction?
For a first order gas phase reaction- $A_{\left(g\right)} \to 2B_{\left(g\right)} + C_{\left(g\right)}$ P be initial pressure of A and P the total pressure at time 't'. Integrated rate equation is
If $a, b, c$ are in $HP,$ then $\frac{a}{b+c}, \frac{b}{c+a}, \frac{c}{a+b}$ will be in
If one $AM 'A'$ and two $GM$ $p$ and $q$ are inserted between two given numbers, then find the value of $\frac{p^{2}}{q}+\frac{q^{2}}{p}$
Among the following which structure is not functionally similar to others
Which one among the following groups of plants is placed in the beginning of Engler and Prantl's system of classification?
Which organism lacks archegonium ?
Which of the following plants has the largest gametophyte ?
Which species of Pinus produces "Chilgoza" ?
Dissolving 120 g of urea (mol. wt. 60) in 1000 g of water gave a solution of density 1.15 g/mL. The molarity of the solution is
Equivalent and molecular masses are same in
12 g of Mg with excess of HCI at NTP gives
The molality of a urea solution in which 0.0100 g of urea, $[(NH_2)_2CO]$ is added to 0.3000 $dm^3$ of water at STP is:
What is the equivalent weight of $SnCl _{2}$ in the following reaction, $SnCl _{2}+C l_{2} \rightarrow S n C l_{4} ?$
The unit of physical quantity obtained integral of electric field is
Charge $q_2$ of mass m revolves around a stationary charge $q_1$ in a circular orbit of radius r. The orbital periodic time of $ q_2 $ would be
There exists an electric field of 1 N/C along $Y$ direction. The flux passing through the square of 1 m placed in $XY$ plane inside the electric field is
A spherical conducting shell of inner radius $r_{1}$ and outer radius $r_{2}$ has a charge $Q$. A charge $-q$ is placed at the centre of the shell. The surface charge density on the inner and outer surfaces of the shell will be
Among the following, the correct graphical representation of electric intensity as a function of distance from the centre of a uniformly charged conducting sphere is shown in
An electron c penetrates through a thin plate A and enters the electric field region between parallel plates A and B. It gets slowed down Three other particles-proton (p), alpha particles $(\alpha)$ and beta particles $(\beta^-)$ - similarly penetrate through either plate A or plate B as shown. The correct statement as regards the speed of the particles is
Gauss's law can't be used to calculate electric field near an electric dipole. Electric dipole don't have symmetrical charge distribution.