Grade 12 Chemistry 2083 Most Important Questions 🔥 | Chapter Wise Important Questions for Exam

Ajouté : 2026-05-12

[00:00:00]So hey guys welcome back to my channel most important question. So without wasting any time let's move into our video.

[00:00:17]So volumetric analysis important question number one what are primary and secondary standard solutions. This question number two, what are the requisitities for a substance to be a primary standard?

[00:00:36]Question number three, define marity and normality.

[00:00:40]Normality definition, what is meant by redux titration importable indicator selected for a particular titration? important. Next important section define the terms. So to normality this marity normality factor in point and equivalent point titration error semormal solution and desormal solution indicator alkalimetry acid basicity of acid acidity of base equivalent equilibrium question number State Ostall's dilution law.

[00:01:33]What is the limitation of this law? So dilation number two ph and pel number three what will happen when hcl gas is passed over a saturated solution of ncl and also explain the principle involved number four acid and base definition.

[00:02:06]Question number five, broned acid and bronjugate acid and conjugate base pair of NS3.

[00:02:21]Question number seven, define le acid and le with examples. Question number eight, right? Limitation of le acid and lemon ion effect. Define the common ion effect.

[00:02:39]Application of common ion effect. Common ion effect application. Question number 11. Solubility product principle and its application. Solubity product.

[00:02:54]What is the ionic product of water?

[00:03:13]Question number one, define chemicalinetics. Question number two, define the rate of chemical reaction.

[00:03:18]Rate of chemical reaction.

[00:03:21]Question number three, define the halfife of a reaction. Halfife of reaction.

[00:03:25]Question number four, factors affecting the rate of reaction.

[00:03:32]Question number six. What is the rateant?

[00:03:43]Question number seven. What do you mean by the order of the reaction reaction with its unit number in rate of reaction?

[00:04:02]Question number 10. Differentiate between the order and molecularity of reaction. So difference between order molecularity of a reaction.

[00:04:12]Question number 11. How do concentration, temperature, catalyst and surface area of reactants affect the rate of reaction?

[00:04:21]Concentration, temperature, catalyst and surface area of the reactants react number. What is the effective collision of reacting?

[00:04:34]What are the essential conditions?

[00:04:36]Essential conditions for the effective collision of reacting spaces. Effective collision of reacting spaces. Essential conditions.

[00:04:46]Question number 13. Find the unit of rate constant of zero. First and second order reaction.

[00:04:54]Question number 14.

[00:04:56]Importance. 15. Catalyst and catalyis 16. Homogeneous catalyis 17.

[00:05:02]Heterogeneous catalyis 18. Enzyme 19 explain the role of catalyst in the reaction mechanism.

[00:05:10]Next rate.

[00:05:35]Question number one. Define thermodynamics.

[00:05:38]Define thermodynamics.

[00:05:40]Question number two, what is the physical concept of physical concept?

[00:05:47]First law of thermodynamics number four. Second law ofrant.

[00:06:11]Predict the criteria of light of explain the terms entropy.

[00:06:25]Gives free energy process, nonspontaneous process, exothermic process, endothermic process, isothermal process, process, isobaric process, isocoric process, cyclic process in your electrochemistry.

[00:06:51]Question number one.

[00:06:59]Question number three, standard electro potential.

[00:07:04]Question number four, hydrogen electro.

[00:07:08]Question number five, electro number six, electrochemical series. Question number seven, application of electrochemical series. Question number eight, standard hydrogen electrode.

[00:07:20]Question number nine, cell potential and free energy change. Question number 10, what is a cell? Explain it.

[00:07:28]Question number 11, commercial important questions of physical chemistry for chemistry.

[00:07:37]Selection of indicators different concepts of acids and bases and their limitations. Acid ion effect and solubility and its application salt analysis precipitation reaction. The most important one's most important prediction of physibility or spontaneity of reactions in terms of free energy change, entropy change and enthalpy change. Most important most important one differences between order and molecularity of a reaction.

[00:08:27]Collision of reaction rateffecting rate of reaction of integrated rate equation and halfife for a first order reaction is derable formation. of complexes. One important reason for color magnetic property and six CFT for the oxy complex most important extraction of one blister copper from copper py.

[00:09:22]So two steel mainly from open earth process extraction of steel mainly from open earth process most important iron from iron pyite extraction of iron from iron pyite four extraction of zinc from zinc blend extraction of mercury within important chemistry of one Vrol CS4.5 H2O two white vital ZN SO4.7 H2O three zinc white Z col2 CL2 corrosive sublimate HCL2 question number six rusting of iron number seven B most important chemistry you said three most important questionistry Preparation of reaction most important important one almost identification of 1 2 and three alco method Vtor's method 1 two three alcomp% separation of one two three amines byman or Cross aldol condensation reaction.

[00:11:21]This two caniso reaction three parkins condensation four wisner reduction. Five caniso reaction. Six clyen condensation reaction. Seven benzone condensation.

[00:11:34]Eight carbalamine reaction. N ram reaction. 10 coupling reaction just like preparation of azo d. This 11 datization reaction. This 12 fraal crafts reaction.

[00:11:48]13 opsman bromide reaction decarbonilation reaction 14 mysterification reaction 15 carbonation reaction 16 Williamson's reaction number 17 Rosen reduction most important reaction important reaction one iodform test two number silver test reaction with tolins reagent three One nitrous acid test of 10 20 30 amines four 2A 4 DNP test five number carvalamine test of primary am I important reaction one reduction of nitroenzine in a different medium two preparation of alcohol using a grigard reagent three oxidation of alco four fermentation basically five all reactions of chloroform most important Six reactions to prepare with one use with one use with one use. This three BC with one use with one use with one use with one use. This convert one propanol to two propanol and vice versa. Methanomine to ethanomine and vice versa. Four phenol tool mythoxyen and vice versa. Five ethoxy ethan phenol or eneline to aod ethanol or ethanol to three hydroxybutanyl.

[00:13:53]Eight number ethanol 2 to two hydroxypropanoic acid. Number propanol or acetone to two hydroxy to methile propanoic acid. 10 phenol to 11 ethanol to propanol or propanoic acid. Two methanomide to ethanomide.

[00:14:11]Some important questions of organic chemistry discuss one. Why is chloroform stored in a dark bottle containing ethanol? Chloroform dark bottle containing ethanol.

[00:14:24]Why does chloroform not give white with a question? Why is nucleophilic substitution reaction difficult in aloine?

[00:14:36]Question number four, why is the boiling point of ethanol greater than that of the ethoxy?

[00:14:43]Question number five, why is phenol more acidic than alcohol?

[00:14:48]Question number six. Why does nitroen undergo an electrophilic substitution reaction?

[00:14:56]Explain why the NO2 group is metadirecting towards electrophilic aromatic substitution.

[00:15:03]Question number seven, why is chlorobenzine OP directed towards an electrofilic substitution reaction?

[00:15:11]Question number eight. It is dangerous to boil a sample of ether store for a long time. Give a reason.

[00:15:17]Question number n. Ether is stored in a bottle containing iron wire. Y1.

[00:15:23]Give a suitable test to distinguish ethanomine from methile methanom.

[00:15:28]Question number 11. Write chemical test to distinguish ethaninoic acid acetic acid from methanoic acid formic acid.

[00:15:36]Question number 12. Most important question. Why is a chloro acidic acid stronger acid than acetic acid. Question number 13. Why is a formic acid stronger acid than acetic acid? Question number 14. Why an amino group of analine is protected before nitration.

[00:15:53]Analine cannot be nitrated directly.

[00:15:57]Question number 15. Write the functional isomer of C3 H6O with their UPSC name.

[00:16:03]Give a chemical test to distinguish them. Question number 16. Write an unsymmetrical ether of C3 H2O. How would you prepare this ether using Williamson synthesis?

[00:16:15]Question number 17. Write down possible isomeic amines of C3 H9 and give their APC names.

[00:16:23]What happens? Question. What happens when one sodium benzo is heated with sodaime? This two penol is heated with zinc. Three chlorobenzene is treated with chloral. This four ethile alcohol ethanol is treated with acidic acid.

[00:16:38]Ethaninoic acid. This five number phenol is treated with abroline is treated with abrol is treated with benzene chloride. This eight number ethoxy ethan is treated with excsi. This n methanol formaldihide is treated with ammonia. 10 number or benzaldihide is treated with no 11 ethanol or propan is treated with Na.

[00:17:04]This 12hide or ketone is treated with hydroxile amine.

[00:17:08]13 ethanol is treated with con H2SO4. 14 acetic acid is treated with P25.

[00:17:17]Question number one, write the flow diagram for the production of cement.

[00:17:22]Most important number between OPC and PPC cement. OPC cement or PPC.

[00:17:31]Write the flow seat diagram for paper.

[00:17:43]and use nylon 6 poly chloride BBC and one use of analic antibiotic antibiotics and antiseptic drugs orbicide and pesticide, germicide and insecticide, a synthetic fertilizer, nitrogen fertilizer or phosphorus phosphatic fertilizer mixed NPK fertilizer.

[00:18:16]Most important question.