>
questions
List of practice Questions
Unit of specific conductance is:
UP Board XII - 2023
UP Board XII
Chemistry
Electrochemistry
Non-electrolyte is:
UP Board XII - 2023
UP Board XII
Chemistry
Electrochemistry
Write the names of two lyophilic and two lyophobic colloids.
UP Board XII - 2023
UP Board XII
Chemistry
Surface Chemistry
State Hardy–Schulze law.
UP Board XII - 2023
UP Board XII
Chemistry
Surface Chemistry
State anti-osmosis with example.
UP Board XII - 2023
UP Board XII
Chemistry
Solutions
State the name and formula of electrophile used in the nitration of benzaldehyde.
UP Board XII - 2023
UP Board XII
Chemistry
Aromaticity & chemistry of aromatic compounds
Name one disaccharide and write its molecular formula.
UP Board XII - 2023
UP Board XII
Chemistry
Biomolecules
Differentiate between coordination compound and double salt.
UP Board XII - 2023
UP Board XII
Chemistry
Coordination Compounds
Structure of the crystal of sodium chloride is:
UP Board XII - 2023
UP Board XII
Chemistry
Solid State
The charge on colloidal particles of Fe\(_2\)O\(_3 \cdot xH_2O\) is:
UP Board XII - 2023
UP Board XII
Chemistry
Surface Chemistry
Molecular formula of sulphur at ordinary temperature is:
UP Board XII - 2023
UP Board XII
Chemistry
Solid State
Gas present in food packet of substances is:
UP Board XII - 2023
UP Board XII
Chemistry
Gaseous State
Explain Werner’s postulates related to the bonding in coordination compounds.
UP Board XII - 2023
UP Board XII
Chemistry
Coordination Compounds
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$_3$
UP Board XII - 2023
UP Board XII
Chemistry
Industrial Chemistry
Give reason that bleaching action of chlorine is permanent while that of SO$_2$ is temporary.
UP Board XII - 2023
UP Board XII
Chemistry
Oxidation-Reduction
Explain why NH$_3$ is basic in nature.
UP Board XII - 2023
UP Board XII
Chemistry
Aromatic Nitrogen compounds
What happens when Sulphur dioxide reacts with acidic potassium permanganate? Write balanced chemical equation for this reaction.
UP Board XII - 2023
UP Board XII
Chemistry
Oxidation-Reduction
Write the mechanism of dehydration of ethanol.
UP Board XII - 2023
UP Board XII
Chemistry
Alcohols, Phenols And Ethers
Write short notes on the following:
(A) Reimer–Tiemann Reaction
(B) Kolbe’s Reaction
(C) Williamson Ether Synthesis
UP Board XII - 2023
UP Board XII
Chemistry
Alcohols, Phenols And Ethers
Discuss the mechanism of unimolecular and bimolecular nucleophilic substitution reactions in haloalkanes.
UP Board XII - 2023
UP Board XII
Chemistry
Haloalkanes and Haloarenes
Write a short note on Coagulation.
UP Board XII - 2023
UP Board XII
Chemistry
Surface Chemistry
‘Action of soap is based on the emulsification and micelle formation.’ Comment on it.
UP Board XII - 2023
UP Board XII
Chemistry
Surface Chemistry
Write a short note on Gabriel’s phthalimide synthesis. Why is Gabriel’s phthalimide synthesis preferred for synthesizing the primary amines?
UP Board XII - 2023
UP Board XII
Chemistry
Amines
What do you mean by D and L configurations of carbohydrates? Draw the structural formula of D-Glucose and D-Fructose.
UP Board XII - 2023
UP Board XII
Chemistry
Biomolecules
What is half-life for a chemical reaction? Show that the half-life for a first order reaction is independent of the initial concentration of the reactants.
UP Board XII - 2023
UP Board XII
Chemistry
Chemical Kinetics
Prev
1
...
2969
2970
2971
2972
2973
...
7155
Next