List of practice Questions

Nitrogen dioxide and sulphur have some properties in common. Which property is shown by one of these compounds, but not by the other?
The ancestors of modern day Frogs and Salamanders are
The chromosome number in meiocyte is 34. The organism could be
RNA polymerase-I transcribes eukaryotic ribosome which does not consist of
The organism which completely lack a cell wall and can live without oxygen are
Which one of the following human organs is called the 'graveyard of RBCs?
The rate constant of the reaction $ A \to B$ is $0.6 \times 10^{-3}$ mole per second. If the concentration of A is 5 M, then concentration of $B$ after 20 minutes is :
The electric potential at a point in free space due to charge $Q$ coulomb is $ Q \times 10^{11} $ volts. The electric field at that point is
An aircraft with a wingspan of $40\, m$ flies with a speed of $1080\, km/hr$ in the eastward direction at a constant altitude in the northern hemisphere, where the vertical component of the earth's magnetic field $1.75 \times 10^{-5}$ $T$. Then the emf developed between the tips of the wings is
An $LED$ is constructed from a $pn$ junction based on a certain semi-conducting material whose energy gap is $1.9\, eV$. Then the wavelength of the emitted light is
The masses of three copper wires are in the ratio $2 : 3 : 5$ and their lengths are in the ratio $5 : 3 : 2$ .Then, the ratio of their electrical resistances is
The molarity of $NO_3^-$ in the solution after $2L$ of $3M \, AgNO_3$ is mixed with $3L$ of $1M \, BaCl_2$ is
The chemical composition of slag formed during the smelting process in the extraction of copper is
Point out incorrect stability order
In a potentiometer experiment, the balancing length of a cell is $560\, cm$. When an external resistance of $10 \, \Omega$ is connected in parallel to the cell, the balancing length changes by $60 \,cm$.The internal resistance of a cell is
If the equilibrium constant for ${ N2(g) + O2(g) <=> 2NO(g)}$ is K, the equilibrium constant for ${ \frac{1}{2} N_2 (g) + \frac{1}{2} O_2 (g) <=> NO(g) }$ will be :
The value of $\sin ^{-1} (\frac {2 \sqrt {2}}{3})+\sin^{-1} (\frac {1}{3}) $ is equal to
What is the pH of the resulting solution when equal volumes of $0.1\, M \,NaOH$ and $0.01\, M$ $HCl$ are mixed ?
The order of differential equation of all circles of given radius $'a'$ is _____
If $x$ is real, then the minimum value of $x^2 - 8x+17 $ is
Which of the following is a gymnosperm in which vessels are found?
The average power dissipated in a pure inductor is
The two electrons have the following set of quantum numbers: $P = 3 , 2 , - 2 , + \frac {1}{2}$ $Q = 3,0,0,+\frac {1}{2}$ Which of the following statement is true ?
The electrolyte having maximum flocculation value for $AgI/Ag^+$ sol is
How many ions per molecule are produced in the solution when Mohr salt is dissolved in excess of water ?