Major Competitive Exams

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Q. What is the geometry of [Ag(NH3)2]+?
  • A. Linear
  • B. Tetrahedral
  • C. Octahedral
  • D. Square planar
Q. What is the Gibbs Free Energy change (ΔG) at equilibrium?
  • A. ΔG < 0
  • B. ΔG = 0
  • C. ΔG > 0
  • D. ΔG = ΔH - TΔS
Q. What is the Gibbs free energy change for a spontaneous process?
  • A. Positive
  • B. Negative
  • C. Zero
  • D. Undefined
Q. What is the gravitational field strength (g) at a distance r from the center of a planet of mass M? (2023)
  • A. GM/r^2
  • B. GM/r
  • C. GMr^2
  • D. G/Mr^2
Q. What is the gravitational field strength at a distance 'R' from the center of a planet of radius 'R' and uniform density?
  • A. 0
  • B. g
  • C. g/2
  • D. g/4
Q. What is the gravitational field strength at a distance of 10 m from a mass of 100 kg? (G = 6.67 × 10^-11 N m²/kg²)
  • A. 6.67 × 10^-10 N/kg
  • B. 6.67 × 10^-9 N/kg
  • C. 6.67 × 10^-8 N/kg
  • D. 6.67 × 10^-7 N/kg
Q. What is the gravitational field strength at a distance of 3R from the center of a planet of mass M and radius R?
  • A. G*M/R²
  • B. G*M/(3R)²
  • C. G*M/(9R²)
  • D. G*M/(6R²)
Q. What is the gravitational field strength at a distance of 3R from the center of the Earth? (R = radius of Earth)
  • A. g/9
  • B. g/3
  • C. g/6
  • D. g/12
Q. What is the gravitational field strength at a distance of 3R from the center of a planet of radius R?
  • A. G/9
  • B. G/3
  • C. G
  • D. 3G
Q. What is the gravitational field strength at a distance of 3R from the center of the Earth? (R = radius of the Earth) (2022)
  • A. g/3
  • B. g/9
  • C. g/6
  • D. g/12
Q. What is the gravitational field strength at a distance of 4R from the center of a planet of mass M and radius R?
  • A. GM/R²
  • B. GM/4R²
  • C. GM/16R²
  • D. GM/8R²
Q. What is the gravitational field strength at a distance of 4R from the center of a planet of radius R?
  • A. G/16
  • B. G/4
  • C. G/2
  • D. G
Q. What is the gravitational field strength at a distance r from a mass M? (2022)
  • A. GM/r
  • B. GM/r^2
  • C. Gm/r^2
  • D. Gm/r
Q. What is the gravitational field strength at the surface of a planet of mass M and radius R?
  • A. GM/R^2
  • B. 2GM/R^2
  • C. GM/R
  • D. G/R^2
Q. What is the gravitational field strength at the surface of a planet with mass 6 x 10^24 kg and radius 6.4 x 10^6 m?
  • A. 9.8 N/kg
  • B. 6.67 N/kg
  • C. 3.2 N/kg
  • D. 12.5 N/kg
Q. What is the gravitational field strength at the surface of the Earth?
  • A. 9.8 N/kg
  • B. 10 N/kg
  • C. 11 N/kg
  • D. 12 N/kg
Q. What is the gravitational force acting on a 1 kg mass at the surface of the Earth? (g = 9.8 m/s²)
  • A. 9.8 N
  • B. 19.6 N
  • C. 4.9 N
  • D. 0 N
Q. What is the gravitational force acting on a 10 kg mass at the surface of the Earth?
  • A. 98 N
  • B. 10 N
  • C. 100 N
  • D. 9.8 N
Q. What is the gravitational force acting on a 10 kg object at the surface of the Earth?
  • A. 98 N
  • B. 100 N
  • C. 10 N
  • D. 9.8 N
Q. What is the gravitational force acting on a 10 kg object on the surface of the Earth? (g = 9.8 m/s²)
  • A. 9.8 N
  • B. 19.6 N
  • C. 29.4 N
  • D. 39.2 N
Q. What is the gravitational force acting on a 50 kg object at the surface of the Earth?
  • A. 490 N
  • B. 500 N
  • C. 510 N
  • D. 520 N
Q. What is the gravitational force acting on a 50 kg object on the surface of the Earth?
  • A. 490 N
  • B. 50 N
  • C. 5 N
  • D. 500 N
Q. What is the gravitational force acting on a 70 kg person standing on the surface of the Earth? (g = 9.8 m/s²)
  • A. 686 N
  • B. 70 N
  • C. 9.8 N
  • D. 700 N
Q. What is the gravitational force acting on a satellite of mass m in orbit at a height h above the Earth's surface?
  • A. GmM/(R+h)^2
  • B. GmM/R^2
  • C. GmM/(R-h)^2
  • D. GmM/(R+h)
Q. What is the gravitational force between two 1 kg masses placed 1 m apart?
  • A. 6.67 × 10^-11 N
  • B. 6.67 × 10^-10 N
  • C. 6.67 × 10^-9 N
  • D. 6.67 × 10^-8 N
Q. What is the gravitational force between two 1 kg masses placed 1 meter apart?
  • A. 6.67 x 10^-11 N
  • B. 6.67 x 10^-9 N
  • C. 6.67 x 10^-10 N
  • D. 6.67 x 10^-12 N
Q. What is the gravitational force between two 1 kg masses placed 1 meter apart? (G = 6.67 × 10^-11 N m²/kg²)
  • A. 6.67 × 10^-11 N
  • B. 1.67 × 10^-10 N
  • C. 6.67 × 10^-10 N
  • D. 0 N
Q. What is the gravitational force between two 1 kg masses separated by 1 meter?
  • A. 6.67 x 10^-11 N
  • B. 9.81 N
  • C. 1 N
  • D. 0 N
Q. What is the gravitational force between two 1 kg masses that are 1 m apart?
  • A. 6.67 x 10^-11 N
  • B. 6.67 x 10^-9 N
  • C. 6.67 x 10^-10 N
  • D. 6.67 x 10^-12 N
Q. What is the gravitational force between two 1 kg masses that are 1 meter apart?
  • A. 6.67 x 10^-11 N
  • B. 6.67 x 10^-9 N
  • C. 6.67 x 10^-10 N
  • D. 6.67 x 10^-12 N
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