List of top Chemistry Questions

Which of 0.1 M urea and 0.1 M NaCl will have more osmotic pressure? Explain with reason.
Write balanced chemical equation of the reaction of ethanamine with NaNO\(_2\) + dil. HCl.
Phenol shows acidic character but ethanol remains approximately neutral. Why?
Silver forms ccp lattice. Edge length of its unit cell is 408.6 pm. Calculate the density of silver. (Atomic weight of Ag = 108)
Explain hybridisation on Ni in [Ni(CN)\(_4\)]\(^{2-}\).
State any four properties of d-block elements.
Find oxidation number and coordination number of Fe in K\(_4\)[Fe(CN)\(_6\)].
Write the formula of half-life period for first order reaction.
In a first order reaction the concentration of a substance gets dissociated by 99% of the initial concentration in 100 minutes. Calculate the velocity constant of the reaction.
Calculate the osmotic pressure of 5% aqueous urea solution (w/v) at 27$^\circ$C. Molecular weight of urea = 60. (R = 0.0821 L atm K$^{-1}$ mol$^{-1}$)
Explain the following: (A) Conductance, (B) Cell constant.
Write the names of two lyophilic and two lyophobic colloids.
Differentiate between coordination compound and double salt.
Name one disaccharide and write its molecular formula.
Non-electrolyte is:
State the name and formula of electrophile used in the nitration of benzaldehyde.
State Hardy–Schulze law.
State anti-osmosis with example.
Unit of specific conductance is:
Structure of the crystal of sodium chloride is:
Molecular formula of sulphur at ordinary temperature is:
Gas present in food packet of substances is:
The charge on colloidal particles of Fe\(_2\)O\(_3 \cdot xH_2O\) is:
Give reason that bleaching action of chlorine is permanent while that of SO$_2$ is temporary.
Describe Ostwald’s process for the industrial manufacture of nitric acid. Write the balanced chemical equations of the following reactions: (i) Zinc metal reacts with conc. HNO$_3$
(ii) Iodine reacts with conc. HNO$_3$