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Chemistry - Some Basic Concepts of Chemistry

Practise 26 KVPY previous year questions on Some Basic Concepts of Chemistry, compiled from papers spanning 2012 to 2020. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty KVPY tests.

  1. 1A closed 10 L vessel contains 1 L water gas 1 : 1 CO : H 2 and 9 L air ( 20 % O 2 by volume) at STP . The contents of the vessel are ignited2020 (SA)
  2. 2Among the following, the correct statement is :2020 (SA)
  3. 30 . 102 g of an organic compound X was oxidized with fuming nitric acid. The resulting solution, after reaction with an excess of aqueous Ba2020 (SA)
  4. 4The number of moles of water present in a spherical water droplet of radius 1 . 0 cm is, [Given : Density of water in the droplet = 10 g cm 2019 (SA)
  5. 5An organic compound contains 46 . 78 % of a halogen X . When 2 . 00 g of this compound is heated with fuming HNO 3 in the presence of AgNO 32019 (SA)
  6. 6The number of water molecules in 250 m L of water is closest to [Given, density of water is 1 . 0 g m L - 1 ; Avogadro s number = 6 . 023 102019 (SA)
  7. 7In the following reaction, P gives two products Q and R each in 40 % yield. If the reaction is carried out with 420 mg of P , the reaction y2019 (SB/SX)
  8. 8The number of water molecules in 250 m L of water is closest to [Given, density of water is 1 . 0 g m L - 1 ; Avogadro s number = 6 . 023 102018 (SA)
  9. 9A solution of 20 . 2 g of 1 , 2 -dibromopropane in M e O H upon heating with excess Z n produces 3 . 58 g of an unsaturated compound X . The2018 (SA)
  10. 10The amount (in mol) of bromoform CHBr 3 produced when 1 . 0 mole of acetone reacts completely with 1 . 0 mole of bromine in the presence of 2018 (SB/SX)
  11. 11A solution (5 ) of an acid is completely neutralized by y of . The same volume (y ) of is required to neutralize of of completely. The norma19 Nov, 2017 (SA)
  12. 12of a metal (M) reacts with oxygen completely to produce of metal oxide. The empirical formula of the metal oxide is [molar mass of and are a19 Nov, 2017 (SA)
  13. 13A compound has the following composition by weight ; and Assuming that all the hydrogen atoms in the compound are part of water of crystalli19 Nov, 2017 (SA)
  14. 14of [atomic mass ] dissolves completely in concentrated solution to produce of gas at STP. The value of is closest to05 Nov, 2017 (SA)
  15. 15In a closed vesselat STP, 50 L of is ignited with of air (containing . The number of moles of remaining in the vessel on cooling to room tem05 Nov, 2017 (SA)
  16. 16A sample of an arsenic-containing pesticide was chemically converted to (atomic mass of 74.9) and titrated with to form If of is required to2016 (SA)
  17. 17reacts with to form (atomic mass of ). The amount of (in g) consumed by of LiOH is closest to2016 (SA)
  18. 18One mole of one of the sodium salts listed below, having carbon content close to produces 1 mole of carbon dioxide upon heating (atomic mass2016 (SA)
  19. 19of compound (empirical formula upon treatment with excess solution produces of a white precipitate. The primary and secondary valences of co2016 (SB/SX)
  20. 20If Avogadro's number is , the number of sulphur atoms present in of is2015 (SA)
  21. 21When of at STP is burnt completely, of gas at STP and 72 of water are produced. The volume of the oxygen gas at STP consumed in the reaction2015 (SA)
  22. 22The percentage of nitrogen by mass in ammonium sulphate is closest to (atomic masses2015 (SA)
  23. 23Complete reaction of of calcium (at. wt. = 40 ) with excess produces of gas. Complete reaction of the same quantity of another metal "M" wit2014 (SA)
  24. 24Three successive measurements in an experiment gave value 10.9, and the correct way of reporting the average value is2014 (SB/SX)
  25. 25Natural abundances of and isotopes of carbon are and , respectively. Assuming they only contributes to the mol. wt. of , the percentage of h2013 (SA)
  26. 26The weight of calcium oxide formed by burning of calcium in excess oxygen is2012 (SA)

Frequently Asked Questions

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

This chapter includes 26 questions compiled from KVPY papers spanning 2012 to 2020.

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

These are KVPY 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 KVPY Chemistry?

Some Basic Concepts of Chemistry has appeared in 9 of the 11 years of KVPY papers covered here, with 26 questions across 14 papers - about 2 per paper it appears in.