Defence Exams

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Q. What is the integral of f(x) = 1/x? (2023)
  • A. ln
  • B. x
  • C. + C
  • D. 1/x + C
  • . x + C
  • . e^x + C
Q. What is the integral of the function f(x) = 3x^2? (2021)
  • A. x^3 + C
  • B. x^3 + 3C
  • C. x^3 + 1
  • D. 3x^3 + C
Q. What is the integral of x^n dx, where n ≠ -1? (2023)
  • A. (x^(n+1))/(n+1) + C
  • B. (x^(n-1))/(n-1) + C
  • C. nx^(n-1) + C
  • D. x^n + C
Q. What is the integrating factor for the equation dy/dx + 3y = 6?
  • A. e^(3x)
  • B. e^(-3x)
  • C. 3e^(3x)
  • D. 3e^(-3x)
Q. What is the IUPAC name for CH3-CH2-COOH?
  • A. Propanoic acid
  • B. Butanoic acid
  • C. Acetic acid
  • D. Methanoic acid
Q. What is the IUPAC name for CH3COOH?
  • A. Methanol
  • B. Ethanol
  • C. Acetic acid
  • D. Butanoic acid
Q. What is the latent heat of fusion if 500 g of ice at 0°C absorbs 334,000 J of heat? (2022)
  • A. 334 J/g
  • B. 668 J/g
  • C. 500 J/g
  • D. 1000 J/g
Q. What is the latent heat of fusion of ice if 80 g of ice at 0°C melts to water at 0°C, absorbing 2400 J of heat? (2022)
  • A. 30 J/g
  • B. 40 J/g
  • C. 50 J/g
  • D. 60 J/g
Q. What is the latitude of the North Pole?
  • A.
  • B. 90°N
  • C. 90°S
  • D. 45°N
Q. What is the latus rectum of the parabola given by the equation y^2 = 12x?
  • A. 3
  • B. 4
  • C. 6
  • D. 12
Q. What is the least common multiple (LCM) of 4 and 6? (2021)
  • A. 12
  • B. 24
  • C. 6
  • D. 8
Q. What is the length of an arc of a circle with a radius of 7 cm and a central angle of 60 degrees? (2023)
  • A. 7π/3 cm
  • B. 14π/3 cm
  • C. 14 cm
  • D. 21 cm
Q. What is the length of an arc of a circle with radius 5 cm and central angle 60 degrees? (2023)
  • A. 5π/3 cm
  • B. 5π/6 cm
  • C. 5π/12 cm
  • D. 5π/4 cm
Q. What is the length of the altitude from vertex A to side BC in triangle ABC, where AB = 5 cm, AC = 12 cm, and BC = 13 cm? (2023)
  • A. 5 cm
  • B. 6 cm
  • C. 7 cm
  • D. 8 cm
Q. What is the length of the altitude from vertex A to side BC in triangle ABC, where AB = 10 cm, AC = 6 cm, and angle A = 90 degrees? (2023)
  • A. 6 cm
  • B. 8 cm
  • C. 10 cm
  • D. 12 cm
Q. What is the length of the diagonal of a rectangle with length 6 cm and width 8 cm? (2022)
  • A. 10 cm
  • B. 12 cm
  • C. 14 cm
  • D. 16 cm
Q. What is the length of the diagonal of a rectangle with sides 3 cm and 4 cm? (2020)
  • A. 5 cm
  • B. 7 cm
  • C. 6 cm
  • D. 8 cm
Q. What is the length of the diagonal of a rectangle with sides 6 cm and 8 cm? (2020)
  • A. 10 cm
  • B. 12 cm
  • C. 14 cm
  • D. 16 cm
Q. What is the length of the diameter of a circle with an area of 50π square units? (2023)
  • A. 10 units
  • B. 5 units
  • C. 20 units
  • D. 15 units
Q. What is the length of the line segment between the points (3, 4) and (7, 1)? (2023)
  • A. 5
  • B. 4
  • C. 3
  • D. 6
Q. What is the length of the median from the vertex opposite the side of length 10 cm in a triangle with sides 10 cm, 10 cm, and 10 cm? (2023)
  • A. 5 cm
  • B. 10 cm
  • C. 8 cm
  • D. 7 cm
Q. What is the length of the median from vertex A to side BC in triangle ABC, where AB = 10 cm, AC = 6 cm, and BC = 8 cm? (2023)
  • A. 5 cm
  • B. 6 cm
  • C. 7 cm
  • D. 8 cm
Q. What is the limit: lim (x -> 0) (1 - cos(x))/(x^2)? (2022)
  • A. 0
  • B. 1/2
  • C. 1
  • D. Undefined
Q. What is the limit: lim (x -> 0) (cos(x) - 1)/x^2? (2019)
  • A. 0
  • B. -1/2
  • C. 1
  • D. Undefined
Q. What is the limit: lim (x -> 0) (e^x - 1)/x? (2022)
  • A. 1
  • B. 0
  • C. e
  • D. Undefined
Q. What is the limit: lim (x -> 0) (ln(1 + x)/x)?
  • A. 1
  • B. 0
  • C.
  • D. Undefined
Q. What is the limit: lim (x -> 0) (tan(3x)/x)?
  • A. 3
  • B. 0
  • C. 1
  • D. Infinity
Q. What is the limit: lim (x -> 1) (x^2 - 1)/(x - 1)? (2019)
  • A. 0
  • B. 1
  • C. 2
  • D. Undefined
Q. What is the local time at 120°E if it is 6:00 AM at 60°W?
  • A. 12:00 PM
  • B. 2:00 PM
  • C. 4:00 PM
  • D. 6:00 PM
Q. What is the local time at 120°E when it is 3:00 PM at 0° longitude?
  • A. 6:00 PM
  • B. 7:00 PM
  • C. 8:00 PM
  • D. 9:00 PM
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