List of top Chemistry Questions asked in UP Board XII

Write the reaction of ozone with lead sulphide.
Denaturation of protein.
Zwitter ion.
Uses of protein.
Write the structural formula of benzaldehyde. Write chemical equations of the reaction of benzaldehyde with (A) NH$_2$NH$_2$, (B) Tollen’s reagent and (C) NaOH.
Write I.U.P.A.C. name of Acetaldehyde. Write chemical equations of its reaction with (A) NaHSO$_3$, (B) NaOH, (C) NH$_2$NH$_2$, and (D) HCN.
Write the structural formula and I.U.P.A.C. name of D-glucose. How will you prove the presence of aldehyde group in glucose molecule?
Write the reaction between NO (g) and O\(_3\) (g).
Reaction of NaNO\(_3\) and H\(_2\)SO\(_4\).
Explain the method of preparation of ozone gas by electric discharge method.
Reaction of nitric acid and zinc.
Reaction of conc. HNO\(_3\) with I\(_2\).
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.
Write balanced chemical equation of the reaction of ethanamine with Hinsberg reagent.
Write I.U.P.A.C. name of CH\(_3\)CH\(_2\)OCH\(_2\)CH\(_2\)CH\(_3\).
What are tetrahedral voids?
State any four properties of d-block elements.
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$^{-1}$)
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 the following: (A) Conductance, (B) Cell constant.
Explain hybridisation on Ni in [Ni(CN)\(_4\)]\(^{2-}\).
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.