KEAM Mock Test
KEAM Mock Test
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Physics
The velocity of an object is defined as:
A) Distance traveled divided by time
B) Change in displacement per unit time
C) Mass times acceleration
D) Force per unit area
Which of the following laws states that the total current entering a junction equals the total current leaving the junction?
A) Kirchoff's Current Law
B) Ohm's Law
C) Kirchhoff’s Voltage Law
D) Faraday’s Law
The phenomenon of diffraction is most prominent when the size of the obstacle is:
A) Much larger than the wavelength of light
B) Comparable to the wavelength of light
C) Much smaller than the wavelength of light
D) Independent of the wavelength of light
The potential energy of an object at height h is given by:
A) \( mgh \)
B) \( \frac{1}{2}mv^2 \)
C) \( \frac{1}{2}kx^2 \)
D) \( qV \)
In a parallel circuit, the total resistance is:
A) The sum of individual resistances
B) The reciprocal of the sum of the reciprocals of individual resistances
C) Always greater than the highest resistance
D) Equal to the highest resistance
Chemistry
Which of the following is a chemical change?
A) Melting of ice
B) Rusting of iron
C) Boiling of water
D) Dissolving sugar in water
Which gas is produced when hydrochloric acid reacts with zinc?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
What is the pH of a neutral solution at 25°C?
Which of the following is the most electronegative element?
A) Sodium
B) Chlorine
C) Fluorine
D) Oxygen
Which of the following is an example of a covalent bond?
A) H2O
B) NaCl
C) CaCl2
D) KCl
Maths
What is the derivative of \( x^2 \) with respect to x?
A) \( x \)
B) \( 2x \)
C) \( x^2 \)
D) \( 2 \)
Evaluate the integral \( \int x dx \)
A) \( x \)
B) \( x^2 \)
C) \( \frac{x^2}{2} + C \)
D) \( \frac{x}{2} + C \)
If \( f(x) = 2x + 3 \), what is \( f^{-1}(x) \)?
A) \( \frac{x - 3}{2} \)
B) \( 2x - 3 \)
C) \( x - 3 \)
D) \( \frac{x + 3}{2} \)
What is the solution to the equation \( x^2 - 4 = 0 \)?
A) \( x = \pm 2 \)
B) \( x = 2 \)
C) \( x = -2 \)
D) \( x = 4 \)
What is the sum of the interior angles of a triangle?
A) 180°
B) 360°
C) 90°
D) 270°
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