List of top Chemistry Questions

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 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 binding force of diamond, silicon and quartz is
The major constituent of natural gas is
The main factor responsible for acidic nature of $BF_3$ is
The main element of smog is
The longest wavelength doublet absorption transition is observed at $589$ and $589.6\,nm$. Energy difference between two excited states is
The liquid drop model of nucleus was proposed by
The limiting radius ratio for tetrahedral shape is:
The lightest gas which is non-inflammable is
The last element of the third transition series is
The largest bond angle is in
The Kolbe's electrolysis proceeds via
The kinetic theory of gases gives the formula $PV = \frac{1}{3} Nm\bar{v}^{2}$ for the pressure P exerted by a gas enclosed in a volume $V$. The term $Nm$ represents
The IUPAC name of $[Ni(CO)_4]$ is
The ionization enthalpy of $He^{+} ion is 19.60 \times10^{-18} J atom^{-1}.$ The ionization enthalpy of $Li^{2+}$ ion will be
The ionic radius of $Cl^{-}$ ion is $1.81\, \mathring A $. The interionic distances of $NaCl$ and $NaF$ are $2.79 \, \mathring A $ and $2.31\, \mathring A $ respectively. The ionic radius of $F^{-}$ ion will be
The ionisation constant of acetic acid is $1.8 \times 10^{-5}$. At what concentration will it be dissociated to 2% ?