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 polymers is synthesized using a freeradical polymerization technique ?Chemistry· Organic Chemistry· Moderate· figure
  2. 2Which of the following is a bactericidal antibiotic ?Chemistry· Organic Chemistry· Moderate
  3. 3Observation of "Rhumann's purple" is a confirmatory test forthe presence ofChemistry· Organic Chemistry· Tough· figure
  4. 4The volume of 0.1 N dibasic acid sufficient to neutralize 1 g of a base that furnishes 0.04 mole of ${OH}^{-}$ in aqueous solution isChemistry· Physical Chemistry· Moderate
  5. 5Extraction of copper by smelting uses silica as an additive tore moveChemistry· Physical Chemistry· Moderate
  6. 6Initially, the root mean square (rms) velocity of N_2 molecules atcertain temperature is u. If this temperature is doubled and allthe…Chemistry· Physical Chemistry· Moderate
  7. 7The wavelength of a moving body of mass 0.1 mg is 3.31 × 10-29 m. The kinetic energy of the body in J would beChemistry· Physical Chemistry· Moderate
  8. 8Ammonia gas at 15 atm is introduced in a rigid vessel at 300 K. At equilibrium the total pressure of the vessel is found to be 40.11 atm at…Chemistry· Physical Chemistry· Moderate
  9. 9The enthalpy of neutralization of a weak monoprotic acid (HA) in 1M solution with a strong base is -55.95 kJ/mol. If acid HA requires 1.4…Chemistry· Physical Chemistry· Tough
  10. 10When pure water is saturated with both CaCO3 and CaC2O4, the concentration of calcium ion in the solution under equilibrium is 8 × 10-5 M.…Chemistry· Physical Chemistry· Moderate
  11. 11The total number of cyclic structural as well as stereo isomers possible for a compound with the molecular formula C5H10 isChemistry· Organic Chemistry· Moderate· figure
  12. 12Identify the reaction which does not liberate hydrogenChemistry· Inorganic Chemistry· Moderate
  13. 13The commercial name for calcium oxide isChemistry· Inorganic Chemistry· Easy
  14. 14Assertion: Among the carbon allotropes, diamond is an insulator, whereas, graphite is a good conductor of electricity. Reason:…Chemistry· Inorganic Chemistry· Moderate
  15. 15Identify the incorrect statementChemistry· Inorganic Chemistry· Easy / Moderate/ Tough· figure
  16. 16Identify the correct statementChemistry· Physical Chemistry· Easy
  17. 17Which of the following is an example of homoleptic complex?Chemistry· Inorganic Chemistry· Moderate
  18. 18The transition metal ions responsible for color in ruby and emerald are, respectivelyChemistry· Inorganic Chemistry· Moderate
  19. 19An alcohol (A), 0.22 g of this alcohol librates 56 ml of CH4 at STP on reaction with CH3MgBr. Write the molecular weight of alcohol which…Chemistry· Organic Chemistry· Moderate
  20. 20Inversion of sucrose (C12H22O11) is first-order reaction and is studied by measuring angle of rotation at different instant of time [IMAGE]…Chemistry· Physical Chemistry· Moderate· figure
  21. 21Softening of hard water is done using sodium aluminium silicate (zeolite). This causesChemistry· Physical Chemistry· Moderate
  22. 22Which of the following statements are correct in context of point defects in a crystal ?Chemistry· Physical Chemistry· Easy
  23. 23In which of the following pairs of carbanion the first one is more stable than second.Chemistry· Organic Chemistry· Moderate· figure
  24. 24Least contributing resonating structure of nitroethene isChemistry· Organic Chemistry· Moderate
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