List of practice Questions

The metal extracted by cyanide process is
The metal present in blood is
The metal that occurs in the native state as well as in the combined form is
The melting points of $Cu$, $Ag$ and $Au$ follow the order
The membranous cover of the ovum at ovulation is
The median from the table Value ? ? ? ? ? ? 7 ? 8? 9? 10 ? 11 ? 12 ? 13 frequency ? ? 2 ? 1? 5 ? 4 ? ? 6 ? ? 1 ? ? ?3 is
The mean of two samples of size 200 and 300 were found to be 25, 10 respectively. Their standard deviations were 3 and 4 respectively. The variance of combined sample of size 500 is
The maximum wavelength of Brackett series of hydrogen atom will be______$A^\circ$
The matrix $A =\begin{bmatrix}0&1\\ 1&0\end{bmatrix}$ is a
The mature seeds of plants such as gram and peas, possess no endosperm, because
The maximum load a wire can withstand without breaking, when its length is reduced to half of its original length, will
The maximum magnetic moment is shown by the ion with electronic configuration of
The masses of carbon, hydrogen and oxygen in an organic compound are in the ratio $6 : 1 : 8$ respectively. Which of the following pairs of formulae correspond to above information?
The masses of three copper wires are in the ratio 5:3:1 and their lengths are in the ratio 1:3:5. The ratio of their electrical resistance is
The mathematical equation for magnetic field lines of force is
The mass of NaCl produced when 200 mL of 2.00 M HCl solution is neutralised with NaOH is
The mass of one mole of a substance in grams is called its
The mass of one mole of electron is
The mass of $CaCO_3$ produced when carbon dioxide is bubbled through 500 mL of 0.5 M $Ca(OH)_2$ will be
The mass of CaO that shall be obtained by heating 20 kg of 90% pure limestone $(CaCO_3)$ is
The mass of electron is $M$, its charge is $e$ and it is accelerated from rest through a potential $V$. The kinetic energy of the electron will be:
The mass of 60% HCl by mass required for the neutralisation of 10 L of 0.1 M NaOH is
The mass of 70% $H_2SO_4$ by mass required for neutralisation of 1 mol of NaOH is
The mass of a photon in motion is (given its frequency = x )
The mass of $CaCO_3$ is required to react with 25 mL of 0.75 M HCl is