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Chemistry - Some Basic Concepts of Chemistry

Practise 77 TS EAMCET previous year questions on Some Basic Concepts of Chemistry, compiled from papers spanning 2001 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty TS EAMCET tests.

Some Basic Concepts of Chemistry has been asked in 22 of the 24 years of TS EAMCET papers analysed (2001–2024), with 77 questions in all. 48% of them were easy, 42% moderate and 10% tough. Most of its questions came from 2019, with 9 questions that year. In the last three years (2022–2024) it had 17 questions across 17 papers, about 1 per paper.

The chapter's 5 topics are not weighted equally: Quantitative measures in chemical equations (31 questions, 40%), Mole concept (21 questions, 27%), and Concentration terms (16 questions, 21%) have been asked the most. Quantitative measures in chemical equations has also led over the last five years, with 9 questions. Mole concept has produced the most tough questions (4).

  1. 1Which of the following statements is not correct regarding the gas evolved by the reaction of dilute HCl on ?04 May, 2025 (E)Laws of chemical combination
  2. 2A solid mixture weighing 5 g contains equal number of moles of and . This solid mixture was dissolved in 1 L of water. What is the volume (i04 May, 2025 (E)Quantitative measures in chemical equations
  3. 34.0 g of a mixture containing and is heated to 673 K. Loss in mass of the mixture is found to be 0.62 g. The percentage of sodium carbonate 03 May, 2025 (M)Mole concept
  4. 40.43 g of a metal of valence 2 was dissolved in 50 mL of solution. The unreacted acid required 14.2 mL of 1 M NaOH solution for neutralizati11 May, 2024 (M)Quantitative measures in chemical equations
  5. 5Match the following The correct answer is10 May, 2024 (M)Mole concept
  6. 6At of 0.5 M HCl is mixed with 100 mL of 0.4 M NaOH solution. To this resultant solution, 800 mL of distilled water is added. What is the pH 10 May, 2024 (E)Quantitative measures in chemical equations
  7. 712 g of an element reacts with 32 g of oxygen. What is the equivalent weight of the element?09 May, 2024 (M)Laws of chemical combination
  8. 8The incorrect rule regarding the determination of significant figures is09 May, 2024 (E)Significant Figures
  9. 9Which one of the following has the same number of atoms as are in of ?14 May, 2023 (M)Laws of chemical combination
  10. 10The formula of a metal oxide is . The fractions of metal that exists as and ions in that oxide are respectively14 May, 2023 (M)Quantitative measures in chemical equations
  11. 11The masses of carbondioxide and water (in g) respectively formed during complete combustion of of glucose at STP are13 May, 2023 (M)Laws of chemical combination
  12. 12A polymer sample contains 3 molecules of molar mass molecules of molar mass 500 and 4 molecules of molar mass 200 . What is its weight avera13 May, 2023 (M)Mole concept
  13. 13The sum of three values and 2.0143 is equal to . The number of significant figures in is13 May, 2023 (E)Significant Figures
  14. 14Magnetite can be reduced with to yield iron metal and carbon dioxide. Calculate the mass of magnetite (in ) needed to obtain of iron if the 20 Jul, 2022 (M)Quantitative measures in chemical equations
  15. 15Round the number 234555359 to 3 significant figures.20 Jul, 2022 (E)Significant Figures
  16. 16The average molecular weight of the air which has of and of , is19 Jul, 2022 (M)Concentration terms
  17. 17The member of significant figures in 2.0400 is19 Jul, 2022 (M)Significant Figures
  18. 18Combustion of of a gaseous hydrocarbon gives of and of water vapour under the same conditions. The molecular formula of the hydrocarbon is19 Jul, 2022 (E)Quantitative measures in chemical equations
  19. 19The amount of 50 % w / w solution of hydrochloric acid required to react with 200 g of CaCO 3 would be18 Jul, 2022 (M)Concentration terms
  20. 20Calculate the number of moles of NaOH required to completely neutralise 100 g of 118 % oleum18 Jul, 2022 (E)Mole concept
  21. 21of a mixture of and is neutralised by of . What is the amount of present in the mixture?06 Aug, 2021 (M)Quantitative measures in chemical equations
  22. 22of has been mixed with of , the amount of formed is06 Aug, 2021 (E)Quantitative measures in chemical equations
  23. 23An organic compound contains 60 % C ; 4 . 48 % H and 35 . 5 % O . Its empirical formula is05 Aug, 2021 (E)Quantitative measures in chemical equations
  24. 24The number of sodium ions present in 0 . 5 mole of sodium ferrocynide is?05 Aug, 2021 (E)Mole concept
  25. 25A 90 g of ethyl amine on reaction with methyl chloride produced a tertiary amine as an exclusive product. The amount of methyl chloride requ05 Aug, 2021 (E)Mole concept
  26. 26The number of grams of oxygen in 32 . 2 g of Na 2 SO 4 10 H 2 O is approximately04 Aug, 2021 (M)Mole concept
  27. 27The molecular mass of sucrose is14 Sep, 2020 (M)Mole concept
  28. 28Sulphuric acid reacts with sodium hydroxide as follows : What will be the amount of sodium sulphate formed, when of sulphuric acid is allowe14 Sep, 2020 (E)Quantitative measures in chemical equations
  29. 29For a given unbalanced reaction, , which is the limiting reagent, if the initial amount for each of the reactant is 100 grams? [Molar masses11 Sep, 2020 (M)Quantitative measures in chemical equations
  30. 30The emperical formula of a compound is and its vapour density is 45 . What is the molecular formula of the compound?11 Sep, 2020 (M)Quantitative measures in chemical equations
  31. 31How many moles of Ammonia are produced by 5 moles of Hydrogen?09 Sep, 2020 (M)Mole concept
  32. 32C 2 H 4 can react with H 2 in presence of a catalyst to form C 2 H 6 as per the following reaction, C 2 H 4 g + H 2 g Catalyst C 2 H 6 g The09 Sep, 2020 (M)Quantitative measures in chemical equations
  33. 33What is the total number of electrons present in one mole of ethane?09 Sep, 2020 (E)Mole concept
  34. 34How many grams of is needed to get 1 gram of copper? Atomic mass, )09 Sep, 2020 (E)Quantitative measures in chemical equations
  35. 35The number of moles of , which is required to produce 10 moles of in the following reaction is06 May, 2019 (M)Quantitative measures in chemical equations
  36. 36A spherical ball of radius contains 56 w\% iron. Find out the number of moles of iron present approximately in the ball? ; atomic mass04 May, 2019 (M)Concentration terms
  37. 37The approximate molarity of a solution in that contains of dissolved in of water is04 May, 2019 (E)Concentration terms
  38. 38Which one of the following given highest volume of at STP on complete decomposition?04 May, 2019 (E)Concentration terms
  39. 39In a vessel, 10 moles of methane and 50 moles of are present. The number of moles of , water and present in the vessel are respectively afte03 May, 2019 (M)Quantitative measures in chemical equations
  40. 40The molality (in mol ) of 1 mole of solute in of solvent is03 May, 2019 (M)Concentration terms
  41. 41A polymer contains 50 molecules with molecular mass 5000, 100 molecules with molecular mass 10,000 and 50 molecules with molecular mass 15,003 May, 2019 (M)Mole concept
  42. 42What is the equivalent weight of methanol if one mole of CH 3 OH is combusted to form CO and H 2 O :03 May, 2019 (E)Mole concept
  43. 43While combusting in air, 4 g of H 2 gas was completely converted into water. If 36 mole of CO 2 from air is dissolved into that water, what 03 May, 2019 (E)Concentration terms
  44. 44reacts with to produce and . The approximate mass (in ) of required to react completely with of is (atomic mass of , and )07 May, 2018 (M)Mole concept
  45. 45Calculate the approximate mass (in g) of required for the following reaction when of oxygen at STP reacts completely. ( molar mass of )07 May, 2018 (M)Mole concept
  46. 46is required to completely neutralise produced on heating of impure . The percentage purity of is approximately (molar masses of and are 56 a05 May, 2018 (M)Quantitative measures in chemical equations
  47. 47Molarity of a solution is . If the density of the solution is , calculate its molality05 May, 2018 (M)Concentration terms
  48. 48The amount of iron (Fe) in which can be produced from of magnetite ore is [Atomic mass of Fe : 55.8]05 May, 2018 (E)Mole concept
  49. 49When 10 g of 90 % pure limestone is heated, the approximate volume (in L ) of CO 2 liberated at STP is:04 May, 2018 (M)Mole concept
  50. 50A litre of seawater (which weighs 1030 g ) contains 6 10 - 3 g of dissolved oxygen. The concentration of dissolved oxygen in ppm is:04 May, 2018 (M)Concentration terms

Frequently Asked Questions

1.How many questions are available for Some Basic Concepts of Chemistry?

This chapter includes 77 questions compiled from TS EAMCET papers spanning 2001 to 2025.

2.Are these questions only from TS EAMCET, or from other exams too?

These are TS EAMCET questions specifically for the Some Basic Concepts of Chemistry chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Some Basic Concepts of Chemistry an important chapter for TS EAMCET Chemistry?

Some Basic Concepts of Chemistry has appeared in 23 of the 25 years of TS EAMCET papers covered here, with 77 questions across 50 papers - about 2 per paper it appears in.

4.What is the difficulty level of Some Basic Concepts of Chemistry questions in TS EAMCET?

Of the 77 questions analysed for this chapter, 48% are easy, 42% moderate and 10% tough. 2019 had the most, with 9 questions.

5.Which topics in Some Basic Concepts of Chemistry should I focus on?

These topics have carried the most weightage in Some Basic Concepts of Chemistry:

  • Quantitative measures in chemical equations - 31 questions (40%)
  • Mole concept - 21 questions (27%)
  • Concentration terms - 16 questions (21%)
  • Mole concept has produced the most tough questions (4).
6.Is Some Basic Concepts of Chemistry's weightage in TS EAMCET going up or down?

Across all 50 papers analysed, Some Basic Concepts of Chemistry has averaged about 1.5 questions per paper. In the last three years (2022–2024), that average has fallen, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.