Engineering Entrance

Q. What is the product of the complex numbers 2 + 3i and 4 - i? (2021)
  • A. 11 + 10i
  • B. 14 + 5i
  • C. 5 + 10i
  • D. 10 + 5i
Q. What is the product of the oxidation of 2-Propanol? (2022)
  • A. Acetone
  • B. Ethanol
  • C. Propanoic acid
  • D. Methanol
Q. What is the product of the oxidation of a primary alcohol? (2020) 2020
  • A. Aldehyde
  • B. Ketone
  • C. Carboxylic acid
  • D. Alkene
Q. What is the product of the oxidation of a primary alcohol? (2023) 2023
  • A. Aldehyde
  • B. Ketone
  • C. Carboxylic acid
  • D. Alkane
Q. What is the product of the oxidation of ethanol?
  • A. Acetic acid
  • B. Methanol
  • C. Butanoic acid
  • D. Propanoic acid
Q. What is the product of the oxidation of propan-2-ol?
  • A. Propanal
  • B. Acetone
  • C. Propanoic acid
  • D. Butan-2-one
Q. What is the product of the reaction between 1-bromobutane and sodium hydroxide in ethanol? (2021)
  • A. Butanol
  • B. Butyl bromide
  • C. Butyl ether
  • D. Butyric acid
Q. What is the product of the reaction between 1-bromopropane and sodium hydroxide in ethanol?
  • A. Propene
  • B. 1-Propanol
  • C. 2-Propanol
  • D. No reaction
Q. What is the product of the reaction between ammonia and ethyl bromide?
  • A. Ethylamine
  • B. Diethylamine
  • C. Triethylamine
  • D. Ammonium bromide
Q. What is the product of the reaction between an amine and an acid?
  • A. Amide
  • B. Salt
  • C. Ester
  • D. Alcohol
Q. What is the product of the reaction between benzaldehyde and phenylmagnesium bromide?
  • A. Benzyl alcohol
  • B. Benzophenone
  • C. Diphenylmethanol
  • D. Benzene
Q. What is the product of the reduction of Cr2O7^2- in acidic medium?
  • A. CrO4^2-
  • B. Cr^3+
  • C. CrO3
  • D. CrO2
Q. What is the product of the roots of the equation 3x² - 12x + 9 = 0? (2022)
  • A. 1
  • B. 3
  • C. 4
  • D. 9
Q. What is the product of the roots of the equation x^2 - 5x + 6 = 0? (2014) 2014
  • A. 6
  • B. 5
  • C. 3
  • D. 2
Q. What is the product of the roots of the equation x² + 5x + 6 = 0? (2022)
  • A. 6
  • B. 5
  • C. 4
  • D. 3
Q. What is the product of the roots of the equation x² - 10x + 24 = 0? (2021)
  • A. 24
  • B. 10
  • C. 16
  • D. 14
Q. What is the projection of vector A = 3i + 4j onto vector B = i + j? (2020)
  • A. 3
  • B. 4
  • C. 5
  • D. 7
Q. What is the radius of a circle if the area is 154 square units? (2023)
  • A. 7 units
  • B. 14 units
  • C. 11 units
  • D. 10 units
Q. What is the radius of a circle if the diameter is 14 cm? (2021)
  • A. 7 cm
  • B. 14 cm
  • C. 21 cm
  • D. 28 cm
Q. What is the rate constant of a first-order reaction if the half-life is 10 minutes? (2021)
  • A. 0.0693 min⁻¹
  • B. 0.1 min⁻¹
  • C. 0.693 min⁻¹
  • D. 0.5 min⁻¹
Q. What is the rate law expression for a reaction that is first order with respect to A and second order with respect to B? (2022)
  • A. Rate = k[A][B]^2
  • B. Rate = k[A]^2[B]
  • C. Rate = k[A]^2[B]^2
  • D. Rate = k[A][B]
Q. What is the rate law expression for a reaction that is second order with respect to reactant A? (2023)
  • A. Rate = k[A]
  • B. Rate = k[A]^2
  • C. Rate = k[A]^2[B]
  • D. Rate = k[A][B]
Q. What is the rate law for a reaction that is first order with respect to A and second order with respect to B? (2022) 2022
  • A. Rate = k[A][B]^2
  • B. Rate = k[A]^2[B]
  • C. Rate = k[A]^2[B]^2
  • D. Rate = k[A][B]
Q. What is the real part of the complex number 4 + 5i? (2023)
  • A. 4
  • B. 5
  • C. 9
  • D. 0
Q. What is the real part of the complex number 7 - 4i? (2023)
  • A. 7
  • B. -4
  • C. 4
  • D. 0
Q. What is the reduction potential of the half-reaction 2H⁺ + 2e⁻ → H₂?
  • A. 0.00 V
  • B. 0.34 V
  • C. 0.76 V
  • D. 1.23 V
Q. What is the relationship between Gibbs free energy (ΔG) and cell potential (E) in electrochemistry?
  • A. ΔG = -nFE
  • B. ΔG = nFE
  • C. ΔG = -E/nF
  • D. ΔG = E/nF
Q. What is the relationship between the frequency and the period of a wave? (2021)
  • A. Frequency is the square of the period
  • B. Period is the reciprocal of frequency
  • C. Frequency and period are unrelated
  • D. Period is the square root of frequency
Q. What is the relationship between the rate of reaction and temperature according to the Arrhenius equation? (2022)
  • A. Inversely proportional
  • B. Directly proportional
  • C. Exponential
  • D. Linear
Q. What is the result of (15 + 5) × 2? (2020)
  • A. 40
  • B. 30
  • C. 50
  • D. 20
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