Major Competitive Exams

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Q. What is the truth value of the expression A AND (B OR C) when A = 1, B = 0, C = 1?
  • A. 0
  • B. 1
  • C. 2
  • D. Undefined
Q. What is the Tyndall effect? (2023)
  • A. Scattering of light by particles
  • B. Absorption of light by particles
  • C. Reflection of light by particles
  • D. Refraction of light by particles
Q. What is the typical band gap of germanium?
  • A. 0.66 eV
  • B. 1.1 eV
  • C. 1.5 eV
  • D. 2.0 eV
Q. What is the typical charge of s-block metal ions?
  • A. +1
  • B. +2
  • C. -1
  • D. 0
Q. What is the typical current-voltage characteristic of a diode in reverse bias? (2019)
  • A. Linear
  • B. Exponential
  • C. Constant
  • D. Very small reverse saturation current
Q. What is the typical forward voltage drop across a silicon diode? (2023)
  • A. 0.2 V
  • B. 0.7 V
  • C. 1.5 V
  • D. 2.0 V
Q. What is the typical range of energy band gaps for semiconductors?
  • A. 0.1 - 0.5 eV
  • B. 0.5 - 1.5 eV
  • C. 1.5 - 3.0 eV
  • D. 3.0 - 5.0 eV
Q. What is the typical range of the energy band gap for semiconductors?
  • A. 0.1 - 0.5 eV
  • B. 0.5 - 2.5 eV
  • C. 2.5 - 5 eV
  • D. 5 - 10 eV
Q. What is the uncertainty in a measurement of 50.0 ± 0.5 g when converted to kilograms?
  • A. 0.0005 kg
  • B. 0.005 kg
  • C. 0.05 kg
  • D. 0.5 kg
Q. What is the uncertainty in position if the uncertainty in momentum of a particle is 1.0 x 10^-24 kg m/s?
  • A. 1.0 x 10^-10 m
  • B. 6.63 x 10^-10 m
  • C. 1.0 x 10^-34 m
  • D. 6.63 x 10^-34 m
Q. What is the uncertainty in the measurement of a length of 5.00 cm ± 0.02 cm when calculating the area?
  • A. 0.04 cm²
  • B. 0.10 cm²
  • C. 0.20 cm²
  • D. 0.50 cm²
Q. What is the uncertainty in the result of adding 5.0 cm and 3.0 cm, each with an uncertainty of 0.1 cm?
  • A. 0.1 cm
  • B. 0.2 cm
  • C. 0.3 cm
  • D. 0.4 cm
Q. What is the uncertainty principle formulated by Heisenberg?
  • A. ΔxΔp ≥ ħ/2
  • B. ΔEΔt ≥ ħ
  • C. ΔxΔE ≥ ħ
  • D. ΔpΔt ≥ ħ
Q. What is the uncertainty principle in quantum mechanics?
  • A. ΔxΔp ≥ ħ/2
  • B. ΔEΔt ≥ ħ/2
  • C. Both A and B
  • D. None of the above
Q. What is the underlying message of the passage about consumerism? (2023)
  • A. It promotes excessive spending
  • B. It encourages minimalism
  • C. It critiques societal values
  • D. It supports economic growth
Q. What is the underlying message of the passage regarding consumerism?
  • A. It is beneficial for society
  • B. It leads to environmental degradation
  • C. It fosters innovation
  • D. It is a personal choice
Q. What is the union of the sets I = {1, 2} and J = {2, 3}?
  • A. {1, 2, 3}
  • B. {1, 2}
  • C. {2, 3}
  • D. {1, 2, 2, 3}
Q. What is the union of the sets {1, 2} and {2, 3}?
  • A. {1, 2}
  • B. {1, 2, 3}
  • C. {2, 3}
  • D. {1, 2, 2, 3}
Q. What is the union of the sets {a, b} and {b, c}?
  • A. {a, b}
  • B. {a, b, c}
  • C. {b, c}
  • D. {a, c}
Q. What is the unit cell of a diamond structure? (2022)
  • A. Face-centered cubic
  • B. Body-centered cubic
  • C. Simple cubic
  • D. Hexagonal
Q. What is the unit cell of diamond classified as? (2022)
  • A. Simple cubic
  • B. Face-centered cubic
  • C. Body-centered cubic
  • D. Cubic close-packed
Q. What is the unit cell of diamond? (2022)
  • A. Face-centered cubic
  • B. Body-centered cubic
  • C. Simple cubic
  • D. Hexagonal
Q. What is the unit of angular momentum in the SI system?
  • A. kg·m/s
  • B. kg·m^2/s
  • C. kg·m^2/s^2
  • D. Joule
Q. What is the unit of capacitance?
  • A. Farad
  • B. Coulomb
  • C. Volt
  • D. Ohm
Q. What is the unit of electric charge in the SI system? (2019)
  • A. Coulomb
  • B. Ampere
  • C. Volt
  • D. Ohm
Q. What is the unit of electric charge?
  • A. Volt
  • B. Ampere
  • C. Coulomb
  • D. Ohm
Q. What is the unit of electric current?
  • A. Volt
  • B. Ohm
  • C. Ampere
  • D. Coulomb
Q. What is the unit of electric field strength?
  • A. Volt per meter
  • B. Coulomb per meter
  • C. Newton per coulomb
  • D. Joule per coulomb
Q. What is the unit of electric field?
  • A. Volt
  • B. Newton/Coulomb
  • C. Coulomb
  • D. Joule
Q. What is the unit of electric potential?
  • A. Coulomb
  • B. Volt
  • C. Joule
  • D. Newton
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