List of top Chemistry Questions

The molecular formula of sulphur is
The molecular weights of oxygen and sulphur dioxide are 32 and 64 respectively. If 1 litre of oxygen at 15$^\circ$C and 740 mm pressure contains N molecules,the number of molecules in 2 litre of sulphur dioxide under the same conditions of temperature and pressure will be
The molarity of pure water at 4$^\circ$C is :
The modern atomic weight scale is based on
The milk of lime is
The metallic character of elements of group 14
The metal that occurs in the native state as well as in the combined form is
The metal extracted by cyanide process is
The metal always found in the free state is
The metal present in blood is
The melting points of $Cu$, $Ag$ and $Au$ follow the order
The maximum wavelength of Brackett series of hydrogen atom will be______$A^\circ$
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 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 CaO that shall be obtained by heating 20 kg of 90% pure limestone $(CaCO_3)$ 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 $CaCO_3$ is required to react with 25 mL of 0.75 M HCl is
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 11.2 L of ammonia gas at S.T.P. is
The major role of fluorspar which is added in small quantities in the electrolytic reduction of $ {Al_2O_3}$ dissolved in fused cryolite is
The major constituent of natural gas is