List of top Chemistry Questions asked in UP Board XII

The boiling point of alcohols increases with the increase in the number of carbon atoms but decreases on branching. Why?
Explain co-ordination number by giving an example.
Four alternatives are given in each part of this question. Choose the correct alternative and write it in your answer-book. Number of moles in 180 g of water is:
Write general electronic configuration of d-block and f-block elements.
Write chemical equations for the reaction of (x) ethanamine with HCl and (y) aniline with \( NaNO_2 \) and dilute HCl at \( 0^\circ C \).
State the difference between molecularity of a reaction and order of a reaction. Write the velocity equation for the reaction \( H_2(g) + Cl_2(g) \rightarrow 2HCl(g) \), which is a zero-order reaction.
Define specific resistance and conductance of a cell.
State the role of hormones in our body.
State important applications of phenol.
Write a short note on Rosenmund reduction. Write only the chemical equation of the reaction of ethyne with water in presence of \( H_2SO_4 \) and \( HgSO_4 \).
What are amines? Write one differentiating test for primary, secondary, and tertiary amines.
Explain the effect of temperature and concentration on the velocity of a reaction.
Write the difference between Galvanic cell and Electrolytic cell.
46 g ethanol is dissolved in 54 g water. Calculate mole fraction of ethanol and water.
Calculate the normality of a solution prepared by dissolving 325 g of anhydrous sodium carbonate (\( Na_2CO_3 \)) in 250 mL of water. Equivalent weight of \( Na_2CO_3 \) is 5
Write ions produced in an aqueous solution of \( K_4[Fe(CN)_6] \). What is the oxidation number of \( Fe \) in this compound?
The true statement for the formula \( K = Ae^{-E_a / RT} \) is:
Electrode potential of standard hydrogen electrode is:
The configuration showing maximum oxidation state is: