Practice/Question bank/JEE Main

JEE Main practice questions

NTA-style Physics, Chemistry and Maths MCQs with solutions. 2,688 questions in the bank.

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  1. 1Which of the following properties is not shown by NO ? NO dkSu&lk fuEu xq.k iznf'kZr ugha djrkChemistry· Inorganic Chemistry· Moderate
  2. 2The set with correct order of acidity is: vEyh;rkChemistry· Inorganic Chemistry· Moderate
  3. 3XeF4 and XeF6 are expected to beChemistry· Inorganic Chemistry· Moderate· figure
  4. 4Change in volume of the system does not alter the number of moles in which of the following equilibriums: fuEu esa fdl fy, vk;ru ifjorZuChemistry· Physical Chemistry· Moderate
  5. 5During depression of freezing point in a solution, the following are in equilibriumChemistry· Physical Chemistry· Easy
  6. 6Which one of the following statements regarding helium is incorrect ?Chemistry· Inorganic Chemistry· Easy
  7. 7In which of the following reactions, increase in the volume at constant temperature don't effect the number of moles of at equilibrium: ij…Chemistry· Physical Chemistry· Moderate
  8. 8For the reaction, CO(g) + Cl2 (g) [IMAGE] COCl2 (g) then Kp / Kc is equal to: CO(g) + Cl2 (g) [IMAGE] COCl2 (g) vfHkfØ fy,] Kp / Kc fuEuChemistry· Physical Chemistry· Moderate· figure
  9. 9The exothermic formation of ClF3 is represented by the equation: Cl2 (g) + 3F2 (g) [IMAGE] 2ClF3 (g); ΔrH = - 329 J which of the following…Chemistry· Physical Chemistry· Moderate· figure
  10. 10If 10-4 dm3 of water is introduced into a 1.0 dm3 flask at 300 K, how many moles of water are in the vapour phase when equilibrium is…Chemistry· Physical Chemistry· Moderate
  11. 11For the reaction ${SO}_{2(g)} + \frac{1}{2}$ O_2(g)[IMAGE] SO_3(g), if KP = KC (RT)x where the symbols have usual meaning then the value of…Chemistry· Physical Chemistry· Moderate· figure
  12. 12The standard Gibbs energy change at 300 K for the reaction is 2A[IMAGE] B + C is 2494.2 J. At a given time, the composition of the reaction…Chemistry· Physical Chemistry· Moderate· figure
  13. 13Which of the following is most soluble in water ? Assume no reaction of cation/anion. dksbZ vfHkfØ;k u ekusaAChemistry· Physical Chemistry· Moderate
  14. 14The products A and B in the reaction are given by the setChemistry· Organic Chemistry· Moderate· figure
  15. 15Which of the following compound is not suitable to obtain from wurtz reaction?Chemistry· Organic Chemistry· Moderate· figure
  16. 16Which of the following chemical reactions depicts the oxidizing behaviour of H2SO4? iznf'kZr djrhChemistry· Inorganic Chemistry· Moderate· figure
  17. 17The major product in the following reaction isChemistry· Organic Chemistry· Tough· figure
  18. 18What will be the product of chlorine water and acetyleneChemistry· Organic Chemistry· Tough· figure
  19. 19Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives tyh; NaOH ds lkFk mipkj ds ckn…Chemistry· Organic Chemistry· Moderate· figure
  20. 20[IMAGE] A and B respectively areChemistry· Organic Chemistry· Moderate· figure
  21. 21Hydroloration of isobutylene followed by oxidative alkaline hydrolysis gives vkblks C;wfVyhuChemistry· Organic Chemistry· Moderate· figure
  22. 22A compound decolourises KMnO4 but does not give ammonical AgNO3 ppt test,d;kSfxd KMnO4 dks fo?kfVr djrkChemistry· Organic Chemistry· Moderate· figure
  23. 23In a saturated solution of Ag2SO4, silver ion concentration is 3 × 10-2 M. Its solubility product is ____ × 10-5: Assume no reaction of…Chemistry· Physical Chemistry· Moderate· figure
  24. 24For the reaction equilibrium, N2O4 (g)[IMAGE] 2NO2 (g) the concentrations of N2O4 and NO2 at equilibrium are 4.8 × 10-2 and 1.2 × 10-2 mol…Chemistry· Physical Chemistry· Moderate· figure
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