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Chemistry - Some Basic Concepts of Chemistry

Practise 73 NTA Abhyas (JEE Main) questions on Some Basic Concepts of Chemistry. Each question shows a quick preview so you can jump straight to the topic you want to revise.

Some Basic Concepts of Chemistry has been asked in 0 of the 25 years of NTA Abhyas (JEE Main) papers analysed (2002–2026), with 73 questions in all. 100% of them were easy, 0% moderate and 0% tough. Most of its questions came from 2026, with 0 questions that year. In the last three years (2024–2026) it had 0 questions across 49 papers, about 0 per paper.

All of the chapter's questions come from a single topic, Uncategorized.

  1. 1A crystalline hydrated salt on being heated loses 45.6% of its weight. Percentage composition of anhydrous salt is Al - 10.5 %, K - 15.1 %,
  2. 2At 100 o C and 1 atm. if the density of liquid water is 1.0 gc m - 3 and that of water vapour is 0.0006 gc m - 3 , then the volume occupied
  3. 3A carbon compound contains 12.8% of carbon, 2.1% of hydrogen and 85.1% of bromine. The molecular weight of the compound is 187.9. Calculate
  4. 41 g of a complex [Cr(H 2 O) 5 Cl]Cl 2 ⋅ H 2 O (mol. Wt. 266.5) was passed through a cation exchanger to produce HCl . The acid liberated was
  5. 5Aluminum carbide A l 4 C 3 liberates methane on treatment with water. The grams of aluminum carbide required to produce 11 .2 L of methane u
  6. 629.2 % w / w H C l stock solution has a density of 1.25 g m L - 1 . The molecular weight of H C l is 36.5 g mo l - 1 . The volume (mL) of st
  7. 7Calculate the molality of KI if the density of 20% (mass/mass) aqueous KI is 1.202 gmL -1 . Report your final answer by rounding off the mol
  8. 8In the reaction, 4 A + 2 B + 3 C → A 4 B 2 C 3 , what will be the number of moles of product formed, starting from 1 mol of A, 0.6 and mol o
  9. 9500 g impure sample of CaCO 3 on heating gives 70 g of CaO . Percentage impurities in sample is
  10. 10RH 2 (ion exchange resin) can replace Ca 2 + ions in hard water as: RH 2 + Ca 2 + ⟶ RCa + 2H + If 1 L of hard water after passing through RH
  11. 11V 1 m L of NaOH of molarity X and V 2 m L of B a ( O H ) 2 of molarity Y are mixed together. The mixture is completely neutralized by 100 mL
  12. 12Calculate the amount of bromine required to convert 10 g of phenol into 2, 4, 6-tribromophenol (Report your answer as whole number only)
  13. 13Find the weight of H 2 S O 4 in 1200 m L of a solution of 0.4 N strength.
  14. 14The mass of C a O obtained by heating 100 kg of 95% pure limestone C a C O 3 is -
  15. 15In an experiment, 2.4 g of iron oxide on reduction with hydrogen gave 1.68 g of iron. In another experiment, 2.9 g of iron oxide gave 2.09 g
  16. 16What mass in miligram of C a C O 3 is required to react completely with 25 ml of 0.75 M HCl according to the reaction C a C O 3 ( s ) + 2 H
  17. 17At STP, 2.8 litres of hydrogen sulphide were mixed with 1.6 litres of sulphur dioxide and the reaction occurred according to the equation 2
  18. 1825 ml of 2 N HCl, 50 ml of 4 N H N O 3 and v ml of 2 M H 2 S O 4 are mixed together and the total volume is made up to 1 L after dilution 50
  19. 19The volume strength of 1 .5 N H 2 O 2 is (Given molar volume at STP = 22.4 L)
  20. 20How many mL of 22.4 volume H 2 O 2 is required to oxidise 0.1 mol of H 2 S gas to S?
  21. 21Experimentally it was found that a metal oxide has formula M 0.98 O . Metal M, present as M 2 + and M 3 + in its oxide. Fraction of the meta
  22. 22Calculate milli equivalent of washing soda required to remove its hardness from one litre hard water contains 18.00 mg M g 2 +
  23. 23Calculate normality, molarity and molality of the solution containing 22% (w/w) salt A l 2 ( S O 4 ) 3 d = 1.253 g m / m l by weight is
  24. 24The total number of moles of neutrons present in 108 mL H 2 O l are
  25. 25The volume strength of 3.57 M solution hydrogen peroxide (at STP) is Report your answer by rounding it upto nearest whole number
  26. 26To neutralize completely 20 mL of 0.1 M aqueous solution of phosphorus acid, the volume of 0.1 M aqueous NaOH solution required is
  27. 27An organic compound (P) having molecular mass 180 is acylated with C H 3 C O C l to get a new compound with molecular mass 348. The number o
  28. 28On subjecting 10 ml mixture of N 2 and CO to repeated electric spark to form CO 2 and NO, 7 ml of O 2 was required for combustion. What was
  29. 291 .84 g mixture of CaCO 3 and MgCO 3 when heated to constant weight of 0 .96 g as residue. Find the mass of CaCO 3 (in grams) in the mixture
  30. 302.76 g of silver carbonate on being strongly heated yields a residue weighing
  31. 31What weight of H 2 C 2 O 4 . 2 H 2 O (molecular weight = 126 g/mol) should be dissolved to prepare 250 ml of centinormal solution to be used
  32. 3226.8 gm N a 2 S O 4 . n H 2 O contains 12.6 of water here the value of 'n' is?
  33. 33At constant T and P, 5 .0 L of S O 2 are reacted with 3 .0 L of O 2 according to the following equation, 2 SO 2 (g) + O 2 (g) → 2 SO 3 (g) .
  34. 341.44 g of Titanium (Ti) reacted with an excess of O 2 and produced x g of a non-stoichiometric compound Ti 1.44 O 1 . The value of x in g is
  35. 35To a 10 ml, 1M aqueous solution of B r 2 , excess of NaOH is added so that all B r 2 is disproportionated to B r - and B r O 3 - . The resul
  36. 360.56 g of a lime stone was treated with oxalic acid to give C a C 2 O 4 . The precipitate decolourized 45 mL of 0 .2 N KMnO 4 in acid medium
  37. 37Calculate the concentration (in percentage by weight) of a solution obtained by mixing 300 g 25 % by weight solution of N H 4 C l and 150 g
  38. 38a g K H C 2 O 4 is used to neutralize 100 mL of 0.02M K M n O 4 in acid medium, where as b g K H C 2 O 4 is used to neutralize 100 mL of 0.0
  39. 39Calculate the minimum mass of C l 2 in grams required to produce 37 .25 g KCl? C l 2 + 2 K O H → K C l + K C l O + H 2 O
  40. 40The ratio of the masses of methane and ethane in a gas mixture is 4 : 5 . The ratio of number of their molecules in the mixture is
  41. 41A 10.0 g sample of a mixture of calcium chloride and sodium chloride is treated with N a 2 C O 3 to precipitate the calcium as calcium carbo
  42. 42The percentage of oxygen in C H 2 O is
  43. 43The haemoglobin from red blood corpuscles of most mammals contains approximately 0.33% of iron by mass. The molecular mass of haemoglobin is
  44. 44245 g impure sample of K C l O 3 s on heating gives 12 g O 2 g according to 2 KClO 3 s → 2 KCl s + 3 O 2 g Calculate % purity of sample ?
  45. 45Percentage loss in mass, when N a H C O 3 ( s ) is heated in open vessel 2 NaHCO 3 (s) → Na 2 CO 3 s + CO 2 g + H 2 O g
  46. 464 mol of a mixture of Mohr's salt and F e 2 S O 4 3 requires 500 ml of 1 M, K 2 C r 2 O 7 for complete oxidation in acidic medium. The mole
  47. 470.7 grams of N a 2 C O 3 . x H 2 O were dissolved in water and the volume was made to 100 mL, 20 mL of this solution required 19.8 mL of N/1
  48. 48Gaseous benzene reacts with hydrogen gas in the presence of nickel catalyst to give gaseous cyclohexane. A mixture of benzene vapour and hyd
  49. 49The flocculation value of H C l for arsenic sulphide sol. is 30 m mol L – 1 . If H 2 S O 4 is used for the flocculation of arsenic sulphide,
  50. 50A complex of cobalt with ammonia is analyzed for determining its formula, by titrating it against a strandarized acid as follows : Co NH 3 x

Frequently Asked Questions

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This chapter includes 73 NTA Abhyas (JEE Main) questions.

2.Are these questions only from NTA Abhyas (JEE Main), or from other exams too?

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

3.What is the difficulty level of Some Basic Concepts of Chemistry questions in NTA Abhyas (JEE Main)?

Of the 73 questions analysed for this chapter, 100% are easy, 0% moderate and 0% tough. 2026 had the most, with 0 questions.

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

All of this chapter's questions come from a single topic: Uncategorized.