Chemistry Syllabus (JEE Main)

Download Q&A
Q. Determine the hybridization of the central atom in O3.
  • A. sp
  • B. sp2
  • C. sp3
  • D. dsp3
Q. Determine the hybridization of the central atom in PCl5.
  • A. sp
  • B. sp2
  • C. sp3
  • D. dsp3
Q. Find the roots of the quadratic equation x^2 + 4x + 4 = 0.
  • A. {-2}
  • B. {2, -2}
  • C. {-4, 0}
  • D. {0, 4}
Q. For a first-order reaction, if the half-life is 10 minutes, what will be the half-life if the initial concentration is doubled?
  • A. 10 minutes
  • B. 5 minutes
  • C. 20 minutes
  • D. 15 minutes
Q. For a first-order reaction, the half-life is independent of the initial concentration. What is the expression for half-life?
  • A. t1/2 = 0.693/k
  • B. t1/2 = k/0.693
  • C. t1/2 = 1/k
  • D. t1/2 = k/2
Q. For a first-order reaction, the half-life is independent of which of the following?
  • A. Initial concentration
  • B. Rate constant
  • C. Temperature
  • D. All of the above
Q. For a process to be reversible, it must be:
  • A. Fast
  • B. Quasi-static
  • C. Adiabatic
  • D. Isochoric
Q. For a process with ΔH = 200 kJ and ΔS = 0.5 kJ/K, what is ΔG at 400 K?
  • A. 200 kJ
  • B. 180 kJ
  • C. 220 kJ
  • D. 160 kJ
Q. For a reaction A → B, if the rate of formation of B is 0.5 mol/L/s, what is the rate of disappearance of A?
  • A. 0.5 mol/L/s
  • B. 1.0 mol/L/s
  • C. 0.25 mol/L/s
  • D. 2.0 mol/L/s
Q. For a reaction A → B, if the rate of reaction doubles when the concentration of A is doubled, what is the order of the reaction with respect to A?
  • A. Zero order
  • B. First order
  • C. Second order
  • D. Third order
Q. For a reaction at constant temperature and pressure, which of the following is true?
  • A. ΔG = ΔH + TΔS
  • B. ΔG = ΔH - TΔS
  • C. ΔG = TΔS - ΔH
  • D. ΔG = ΔS - ΔH
Q. For a reaction at equilibrium, if the concentration of products increases, 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 a reaction at equilibrium, the change in Gibbs free energy (ΔG) is equal to:
  • A. ΔH - TΔS
  • B. 0
  • C. ΔS - TΔH
  • D. ΔH + TΔS
Q. For a reaction at standard conditions, if ΔG° is negative, what can be said about the equilibrium constant (K)?
  • A. K < 1
  • B. K = 1
  • C. K > 1
  • D. K is undefined
Q. For a reaction at standard conditions, if ΔG° is positive, what can be said about the reaction?
  • A. The reaction is spontaneous in the forward direction.
  • B. The reaction is spontaneous in the reverse direction.
  • C. The reaction is at equilibrium.
  • D. The reaction is impossible.
Q. For a reaction at standard conditions, if ΔG° is positive, what does it imply?
  • A. The reaction is spontaneous in the forward direction.
  • B. The reaction is at equilibrium.
  • C. The reaction is non-spontaneous in the forward direction.
  • D. The reaction will proceed rapidly.
Q. For a reaction at standard conditions, if ΔG° is positive, what does it indicate?
  • A. The reaction is spontaneous in the forward direction.
  • B. The reaction is non-spontaneous in the forward direction.
  • C. The reaction is at equilibrium.
  • D. The reaction is spontaneous in the reverse direction.
Q. For a reaction with a rate constant k, what is the relationship between the rate of reaction and the concentration of reactants for a first-order reaction?
  • A. Rate = k[A]^2
  • B. Rate = k[A]
  • C. Rate = k[A]^3
  • D. Rate = k[A]^0
Q. For a reaction with ΔH = 100 kJ and ΔS = 200 J/K, at what temperature will the reaction become spontaneous?
  • A. 500 K
  • B. 250 K
  • C. 200 K
  • D. 100 K
Q. For a reaction with ΔH = 100 kJ/mol and ΔS = 200 J/mol·K, at what temperature will the reaction become spontaneous?
  • A. 500 K
  • B. 250 K
  • C. 200 K
  • D. 100 K
Q. For a reaction with ΔH = 50 kJ/mol and ΔS = 100 J/mol·K, at what temperature will the reaction become spontaneous?
  • A. 500 K
  • B. 250 K
  • C. 1000 K
  • D. 200 K
Q. For a reversible process, the change in entropy is given by which of the following?
  • A. ΔS = Q/T
  • B. ΔS = W/T
  • C. ΔS = Q + W
  • D. ΔS = 0
Q. For a reversible process, the change in entropy of the system is equal to the heat absorbed divided by the temperature. This is expressed as:
  • A. ΔS = Q/T
  • B. ΔS = T/Q
  • C. ΔS = Q + T
  • D. ΔS = Q - T
Q. For a reversible process, the change in entropy of the system is equal to the heat absorbed divided by the temperature. What is the formula?
  • A. ΔS = Q/T
  • B. ΔS = T/Q
  • C. ΔS = Q*T
  • D. ΔS = Q + T
Q. For a reversible process, the change in entropy of the universe is:
  • A. Zero
  • B. Positive
  • C. Negative
  • D. Undefined
Q. For a reversible process, the efficiency of a Carnot engine is given by which formula?
  • A. 1 - (T2/T1)
  • B. T1/T2
  • C. T2/T1
  • D. 1 - (T1/T2)
Q. For a solution containing 2 components A and B, if the mole fraction of A is 0.6, what is the vapor pressure of the solution if the vapor pressure of pure A is 100 mmHg?
  • A. 60 mmHg
  • B. 100 mmHg
  • C. 40 mmHg
  • D. 80 mmHg
Q. For a solution to obey Raoult's Law, the interactions between solute and solvent must be:
  • A. Stronger than those in the pure components.
  • B. Weaker than those in the pure components.
  • C. Similar to those in the pure components.
  • D. Non-existent.
Q. For a spontaneous process, the change in entropy of the universe must be:
  • A. Zero
  • B. Positive
  • C. Negative
  • D. Undefined
Q. For a spontaneous process, the change in Gibbs free energy (ΔG) is related to entropy (ΔS) how?
  • A. ΔG = ΔH - TΔS
  • B. ΔG = TΔS - ΔH
  • C. ΔG = ΔS - ΔH
  • D. ΔG = ΔH + TΔS
Showing 31 to 60 of 2802 (94 Pages)
Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely