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questions
List of practice Questions
Write short notes on the following:
(i) Reimer–Tiemann reaction
(ii) Kolbe reaction
UP Board XII - 2023
UP Board XII
Chemistry
Phenols
How will you obtain the following from Chlorobenzene? (Write only chemical equations)
(i) Picric Acid
(ii) Dichlorobenzene
(iii) Chlorobenzene Sulphonic Acid
UP Board XII - 2023
UP Board XII
Chemistry
Aromaticity & chemistry of aromatic compounds
Write a short note on Nucleophilic substitution reactions in haloalkanes.
UP Board XII - 2023
UP Board XII
Chemistry
Reaction mechanisms
Write the chemical equation of the reaction of glucose with bromine water.
UP Board XII - 2023
UP Board XII
Chemistry
Carbohydrates
Write Nernst equation and its one application.
UP Board XII - 2023
UP Board XII
Chemistry
Electrochemistry
Differentiate between Lyophilic and Lyophobic colloids.
UP Board XII - 2023
UP Board XII
Chemistry
Colloids
Write a short note on Acetylation.
UP Board XII - 2023
UP Board XII
Chemistry
Organic Chemistry
Write a short note on denaturation of proteins.
UP Board XII - 2023
UP Board XII
Chemistry
Biomolecules
Write four characteristics of transition elements.
UP Board XII - 2023
UP Board XII
Chemistry
d block elements
Write a short note on IUPAC system of nomenclature of coordination compounds.
UP Board XII - 2023
UP Board XII
Chemistry
Coordination chemistry
How many primary alcoholic groups are present in glucose?
UP Board XII - 2023
UP Board XII
Chemistry
Carbohydrates
Define packing efficiency.
UP Board XII - 2023
UP Board XII
Chemistry
Solid State
Write the chemical equation for the reactions of chlorine with (i) sulphur dioxide, and (ii) turpentine oil.
UP Board XII - 2023
UP Board XII
Chemistry
Inorganic chemistry
When a copper rod is dipped into silver nitrate solution, why does the colour of the solution turn blue? Explain.
UP Board XII - 2023
UP Board XII
Chemistry
Redox Reactions
Explain Schottky defect.
UP Board XII - 2023
UP Board XII
Chemistry
Solid State
Define packing efficiency.
UP Board XII - 2023
UP Board XII
Chemistry
Solid State
Find out the oxidation number of Copper (Cu) in the following coordination compound: [Cu(NH$_3$)$_4$]SO$_4$.
UP Board XII - 2023
UP Board XII
Chemistry
Coordination Compounds
69.77% Carbon, 11.63% Hydrogen and the rest Oxygen is present in an organic compound. The molecular mass of the compound is 86. The compound does not reduce Tollen’s reagent but gives an addition compound with sodium hydrogen sulphite and gives positive iodoform test. On strong oxidation it gives ethanoic acid and propanoic acid. Write the structure of possible compound.
UP Board XII - 2023
UP Board XII
Chemistry
Organic Chemistry
Write short notes on the following:
(i) Claisen Reaction
(ii) Cannizzaro’s Reaction
(iii) Rosenmund’s Reaction
UP Board XII - 2023
UP Board XII
Chemistry
carbonyl compounds
Potassium sulphate is:
UP Board XII - 2023
UP Board XII
Chemistry
Inorganic chemistry
How many moles of water are present in 180 g of water?
UP Board XII - 2023
UP Board XII
Chemistry
Mole concept and Molar Masses
The rate constant of a reaction A + 2B $\longrightarrow$ Product is expressed by the equation $R = [A][B]^2$. The molecularity of reaction will be:
UP Board XII - 2023
UP Board XII
Chemistry
Chemical Kinetics
On Cannizzaro’s reaction formaldehyde forms:
UP Board XII - 2023
UP Board XII
Chemistry
Aldehydes And Ketones
R–NH$_2$ + CHCl$_3$ + 3KOH (alc.) $\longrightarrow$ RNC + 3KCl + 3H$_2$O. The above reaction is:
UP Board XII - 2023
UP Board XII
Chemistry
Organic Chemistry
An aromatic organic compound A on treatment with aqueous ammonia and heating forms compound B, which on heating with Br$_2$ and KOH forms a compound C of molecular formula C$_6$H$_7$N. Write the structures and names of compounds A, B and C.
UP Board XII - 2023
UP Board XII
Chemistry
Aromaticity & chemistry of aromatic compounds
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