2nd year chemistry guess paper 2022 punjab board [pdf] Download

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2nd year chemistry guess paper 2022 punjab board

Chemistry is the most important subject. Chemistry is not only an important science subject but also has great importance in our practical life. For scoring good marks in chemistry, 2nd year chemistry guess paper 2022 are very important. For the students of 2nd year, 12th class chemistry guess paper is available (free download in pdf) here for the students. 2nd year physics pairing scheme 2022

2nd year chemistry guess paper 2022 Punjab board

DateDaySubjectsClassSubjectsClass
22-06-2022Wednesdaychemistry (First Group)12thchemistry (Second Group)12th

This guess paper is for all punjab board Bise Lahore board, Gujranwala board, Bhawalpur board, Multan board, DG Khan board, Sargodha board, Sahiwal board and Rawalpindi board and Faisalabad board.

Important long questions of Chemistry 2nd year chapter wise 2022. past papers and and guess paper of chemistry 2nd year gujranwala board lahore board fasilabad multan and rawlpindi board.

Short Quesation Long Quesation and McqsDownload in Pdf
Past PaperDownload in Pdf
Short Quesation Long Quesation and Mcqs important 2022Download in Pdf

Chapter no -1:

Important long questions:

  • Melting and boiling point
  • Metallic character
  • Oxidation state
  • Hydration energy
  • Position of hydrogen

Important short questions:

  • What is lanthanide contraction.
  • What is hydration energy ?
  • Hydration energy increases from left to right in a period. Why?
  • Zno is amphoteric oxide, prove by means of reactions.
  • Question number 7 to 13 from exercise.

Chapter no -2:

Important long questions:

  • Peculiar behavior of lithium.
  • Down cell
  • Diaphragm cell.
  • Important short questions:
  • Discuss solubility of sulphates and carbonates of alkali and alkaline metals.
  • Reaction of alkali metals with oxygen and water.
  • How plaster of paris is prepared from gypsum.
  • How ko2 is used by mountaineers for breathing?
  • Why the solution of na2co3 in water is basic in nature?
  • Question num 7(b) and 9 (b) from exercise

Chapter no -3:

Important short questions:

  • Give two methods for preparation of of borax?
  • Give uses of borax and boric acid.
  • Effect of heat on borax .
  • Peculiar behavior of carbon.
  • Question no.9 from exercise.
  • What is borax bead test?

Chapter no -4:

Important long questions:

  • Manufacturing of nitric acid
  • Allotropes of phosphorous
  • Comparison of sulphur and oxygen
  • Manufacturing of sulphuric acid
  • Important short questions:
  • What is laughing gas? Why is it called so?
  • What is aqua regia.
  • How it dissolve noble metal gold.
  • Give four uses of hno3.
  • Reaction of nitric acid with magnesium, as, sb,cu ,zn, sn. Reaction of no2 with water and with phosphorus .
  • Describe ring test for the confirmation, presence of nitrate ions in solution.
  • Why white phosphorus is more reactive than red phosphorus.
  • Reaction of p203 and p205 with cold and hot water.
  • P205 is powerful dehydrating agent. Prove by examples.
  • Write three similarities and dissimilarities of sulphur and oxygen.

Chapter no -5:

Important short questions:

  • What is meant by disproportionation reaction? Give an example of it?
  • The acidic strength of the oxyacids of halogens increases with the increase in the number of oxygen atoms why?
  • What do you mean by available chlorine?
  • Write use of bleaching powder.
  • Question number 7 and 8 from exercise.

Chapter-6:

Important short questions:

  • Typical and non typical transition elements.
  • Melting point and its trend.
  • Binding energy and its trend.
  • Question no. 11 from exercise

Chapter-7:

Important short questions:

  • What is peculiar nature of carbon.
  • How wood is transferred to coal (anthracite)?
  • Define carbonization of coal.?
  • What is significance of friedrick drk?
  • What is meant by functional group and functional isomerism? Give examples.
  • What is homocyclic and hetrocyclic compunds? Give one example of each.
  • Fefine cyclic and alicyclic compound? With one example of each.
  • Question 15 from exercise

Chapter no -8:

Important long questions:

  • Acidic nature of alkynes
  • Halogenation of alkane.
  • Kolbe’s electrolytic methods
  • Important short questions:
  • Question no. 8(a, 23(a) from exercise.
  • What is baeyer’s test (hydroxylation of alkenes)? Give. Its use.
  • Define markownikov’s rule, give an example.
  • How a trans-alkene is obtained by the partial hydrogenation of alkynes?
  • What products are formed by catalytic oxidation of methane.
  • What is mustard gas?

Chapter-9:

Important short questions:

  • Differentiate between mono and polycyclic aromatic compounds.
  • How will you prepare m-dinitrobenzene and maleic acid from benzene in two steps? Give equations.
  • What information is obtained by the x-rays analysis of benzene?
  • How will you convert benzene to benzoic acid?
  • Justify that alkenes are more reactive then benzene.
  • Write down the resonance structures of benzene and indicate their relative contributions towards the actual structure of benzene.
  • Nitration of toluene gives ortho and paranitrotoluene, while the nitration of nitrobenzene gives metadinitrobenzene give reasons.
  • Question no. 14 from exercise

Chapter-10:

Important short questions:

  • Reactivity of alkyl halides.
  • What are electrophile and nucleophile.
  • What is grignard reagent? How it is prepared?
  • How will you got 2-butanol and tertiary alcohol from ethyl magnesium bromide.
  • Questions 8,12 from exercise.

Chapter-12:

Important short questions:

  • How will you convert ethanal to lactic acid?
  • Why tollen’s test is also called silver mirror test?
  • Give the mechanism of addition of hcn to acetone.
  • Reduction of carbonyl compounds.
  • What type of polarity is present in carbonyl group?
  • Question no. 14,16,17 from exercise.

Chapter-13:

Important short questions:

  • How the hydrolysis of esters gives carboxylic acid.
  • Differentiate between aromatic carboxylic acid and fatty acids.
  • Strecker synthesis.
  • Prepare acetic acid from ethyne.

Chapter-15:

Important short questions:

  • What are micronutrients & macronutrients?
  • In what quantity they required per acre?
  • Name two phosphatic fertilizers?
  • What they provide to plants or soil?
  • What are the raw materials required to preparation of cement?
  • Give 4 essential qualities of a good fertilizer.