Chemistry Syllabus (JEE Main)

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Q. For the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g), if the concentration of SO2 is doubled, what happens to the equilibrium constant?
  • A. It doubles
  • B. It remains the same
  • C. It halves
  • D. It quadruples
Q. For the reaction 4H2(g) + 2O2(g) ⇌ 4H2O(g), what is the change in Gibbs free energy at equilibrium?
  • A. Positive
  • B. Negative
  • C. Zero
  • D. Depends on temperature
Q. For the reaction 4HCl(g) ⇌ 2H2(g) + Cl2(g), what is the effect of adding HCl on the equilibrium?
  • A. Shift to the left
  • B. Shift to the right
  • C. No effect
  • D. Depends on the temperature
Q. For the reaction A + B ⇌ C + D, if the concentration of C is decreased, what will be the effect on the equilibrium?
  • A. Shift to the right
  • B. Shift to the left
  • C. No change
  • D. Increase in temperature
Q. For the reaction A(g) ⇌ B(g), if the concentration of A is increased, what will happen to the concentration of B at equilibrium?
  • A. Increase
  • B. Decrease
  • C. Remain the same
  • D. Cannot be determined
Q. For the reaction A(g) ⇌ B(g), if the concentration of B is increased, what will happen to the concentration of A at equilibrium?
  • A. Increase
  • B. Decrease
  • C. Remain the same
  • D. Cannot be determined
Q. For the reaction CO(g) + 2H2(g) ⇌ CH3OH(g), what is the effect of increasing the concentration of H2?
  • A. Shifts equilibrium to the right
  • B. Shifts equilibrium to the left
  • C. No effect
  • D. Increases the rate of reaction
Q. For the reaction CO(g) + 2H2(g) ⇌ CH3OH(g), what will happen if H2 is removed from the system?
  • A. Shifts to the right
  • B. Shifts to the left
  • C. No change
  • D. Increases the rate of reaction
Q. For the reaction CO(g) + 2H2(g) ⇌ CH3OH(g), what will happen if the concentration of H2 is increased?
  • A. Equilibrium shifts to the left
  • B. Equilibrium shifts to the right
  • C. No change
  • D. Rate of reaction decreases
Q. For the reaction CO(g) + 2H2(g) ⇌ CH3OH(g), what will happen if the pressure is increased?
  • A. Equilibrium shifts to the left
  • B. Equilibrium shifts to the right
  • C. No change in equilibrium
  • D. Equilibrium constant increases
Q. For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), if the concentration of NH3 is increased, what will happen to the equilibrium?
  • A. Shift to the right
  • B. Shift to the left
  • C. No change
  • D. Increase the rate of reaction
Q. For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what happens if the volume of the container is decreased?
  • A. Equilibrium shifts to the left
  • B. Equilibrium shifts to the right
  • C. No change in equilibrium
  • D. Equilibrium constant changes
Q. For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what happens to the equilibrium constant if the temperature is increased?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Depends on the pressure
Q. For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what happens to the equilibrium position if the pressure is increased?
  • A. Shifts to the left
  • B. Shifts to the right
  • C. No change
  • D. Depends on temperature
Q. For the reaction N2(g) + 3H2(g) ⇌ 2NH3(g), what happens to the equilibrium position if the volume of the container is decreased?
  • A. Equilibrium shifts to the left
  • B. Equilibrium shifts to the right
  • C. No change in equilibrium
  • D. Equilibrium shifts in both directions
Q. For the reaction: 3A(g) ⇌ 2B(g) + C(g), what is the expression for Kp?
  • A. (P_B^2 * P_C) / (P_A^3)
  • B. (P_A^3) / (P_B^2 * P_C)
  • C. (P_C) / (P_A^3)
  • D. (P_B^2) / (P_A^3)
Q. For the reaction: A(g) ⇌ B(g) + C(g), if the concentration of A is increased, what will happen to the equilibrium position?
  • A. Shift to the left
  • B. Shift to the right
  • C. No change
  • D. Depends on temperature
Q. For which of the following diatomic molecules is the bond order equal to 2?
  • A. C2
  • B. N2
  • C. O2
  • D. F2
Q. For which of the following molecules is the bond order equal to 0?
  • A. He2
  • B. H2
  • C. Li2
  • D. Be2
Q. For which of the following molecules is the molecular orbital diagram similar to that of O2?
  • A. N2
  • B. F2
  • C. C2
  • D. Ne2
Q. For which of the following pairs of molecules is the bond order the same?
  • A. N2 and C2
  • B. O2 and F2
  • C. B2 and C2
  • D. N2 and O2
Q. For which value of k does the equation x^2 + kx + 16 = 0 have no real roots?
  • A. -8
  • B. -4
  • C. 0
  • D. 4
Q. How does the presence of a +M group affect the stability of a carbocation?
  • A. Increases stability
  • B. Decreases stability
  • C. No effect
  • D. Depends on the solvent
Q. How does the presence of a -I group affect the stability of a carbocation?
  • A. Increases stability
  • B. Decreases stability
  • C. No effect
  • D. Depends on the size of the group
Q. How many atoms are in 2 moles of oxygen gas (O2)?
  • A. 6.022 x 10^23
  • B. 1.2044 x 10^24
  • C. 3.011 x 10^23
  • D. 12.044 x 10^23
Q. How many grams are in 0.25 moles of glucose (C6H12O6)?
  • A. 30 g
  • B. 45 g
  • C. 75 g
  • D. 90 g
Q. How many grams are in 0.25 moles of KCl?
  • A. 35 g
  • B. 70 g
  • C. 17.5 g
  • D. 140 g
Q. How many grams are in 0.25 moles of sulfuric acid (H2SO4)?
  • A. 49 g
  • B. 98 g
  • C. 24.5 g
  • D. 12.25 g
Q. How many grams are in 0.5 moles of sodium (Na)?
  • A. 11 g
  • B. 22 g
  • C. 5.5 g
  • D. 44 g
Q. How many grams are in 2 moles of carbon dioxide (CO2)?
  • A. 44 g
  • B. 88 g
  • C. 22 g
  • D. 66 g
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