✅ Total Questions: 50
🔢 Each question has 4 options
📘 Covers: Physics, Chemistry, Mathematics, Electrical Engineering
📝 Correct answer given below each question
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📘 Mock Test 6 – WBJEE JELET 2025
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1. SI unit of energy is:
A. Watt
B. Newton
C. Joule
D. Volt
Answer: C
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2. What is the derivative of ?
A.
B.
C.
D.
Answer: A
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3. Which of these is an alkali metal?
A. Calcium
B. Magnesium
C. Sodium
D. Iron
Answer: C
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4. The time period of a pendulum depends on:
A. Mass
B. Amplitude
C. Length
D. Tension
Answer: C
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5. In a series circuit, total resistance is:
A. Sum of individual resistances
B. Minimum resistance
C. Same as highest resistance
D. Zero
Answer: A
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6. Which gas is used in balloons?
A. Oxygen
B. Hydrogen
C. Helium
D. Carbon dioxide
Answer: C
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7. Integration of dx is:
A.
B.
C.
D.
Answer: B
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8. The device used to store charge is:
A. Diode
B. Capacitor
C. Resistor
D. Inductor
Answer: B
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9. The binary equivalent of decimal 3 is:
A. 10
B. 11
C. 01
D. 00
Answer: B
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10. Avogadro's number is:
A.
B.
C.
D.
Answer: C
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11. Voltage is measured using a:
A. Ammeter
B. Voltmeter
C. Galvanometer
D. Multimeter
Answer: B
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12. The SI unit of resistance is:
A. Volt
B. Ampere
C. Ohm
D. Farad
Answer: C
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13. Who gave the laws of motion?
A. Newton
B. Einstein
C. Galileo
D. Faraday
Answer: A
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14. What is the value of ?
A. 1
B. 0
C.
D. Infinity
Answer: A
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15. Which gate gives output 0 only when all inputs are 1?
A. AND
B. NAND
C. NOR
D. OR
Answer: B
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16. The formula of sulphuric acid is:
A. HCl
B. H₂SO₄
C. HNO₃
D. CH₃COOH
Answer: B
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17. Which one is a non-metal?
A. Copper
B. Aluminium
C. Sulphur
D. Zinc
Answer: C
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18. Which of the following quantities is scalar?
A. Force
B. Velocity
C. Speed
D. Displacement
Answer: C
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19. A logic circuit that performs addition:
A. Decoder
B. Encoder
C. Adder
D. Multiplexer
Answer: C
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20. What is the output of an OR gate with inputs 0 and 1?
A. 0
B. 1
C. 2
D. Undefined
Answer: B
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21. The reciprocal of resistance is:
A. Capacitance
B. Inductance
C. Conductance
D. Impedance
Answer: C
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22. What is 1 kilovolt in volts?
A. 10 V
B. 100 V
C. 1000 V
D. 0.1 V
Answer: C
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23. The speed of sound in air is approx:
A. 330 m/s
B. 3×10⁸ m/s
C. 1500 m/s
D. 300 m/s
Answer: A
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24. 1 horsepower is equal to:
A. 746 W
B. 1000 W
C. 500 W
D. 550 W
Answer: A
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25. The NOT gate has:
A. One input, one output
B. Two inputs, one output
C. One input, two outputs
D. Multiple inputs
Answer: A
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26. Area under velocity-time graph gives:
A. Acceleration
B. Force
C. Distance
D. Velocity
Answer: C
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27. The element with atomic number 1 is:
A. Helium
B. Hydrogen
C. Oxygen
D. Carbon
Answer: B
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28. The number of neutrons in carbon-12 is:
A. 6
B. 12
C. 18
D. 0
Answer: A
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29. The basic unit of electric charge:
A. Electron
B. Ampere
C. Coulomb
D. Proton
Answer: C
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30. The square root of 81 is:
A. 7
B. 8
C. 9
D. 6
Answer: C
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31. Zener diode is mainly used in:
A. Rectification
B. Amplification
C. Voltage regulation
D. Oscillation
Answer: C
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32. What is used to increase voltage in transmission?
A. Motor
B. Generator
C. Transformer
D. Rectifier
Answer: C
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33. SI unit of temperature:
A. Celsius
B. Kelvin
C. Fahrenheit
D. Joule
Answer: B
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34. The formula for work:
A.
B.
C.
D.
Answer: B
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35. Binary of decimal 10 is:
A. 1000
B. 1010
C. 1110
D. 0101
Answer: B
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36. Which of the following is not a primary color of light?
A. Red
B. Green
C. Blue
D. Yellow
Answer: D
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37. Who discovered electron?
A. Newton
B. Thomson
C. Faraday
D. Rutherford
Answer: B
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38. Logic gate that outputs 1 only when inputs differ:
A. XOR
B. AND
C. OR
D. NAND
Answer: A
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39. A full wave rectifier has how many diodes?
A. 1
B. 2
C. 4
D. 3
Answer: B
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40. Power = Voltage × ____
A. Current
B. Resistance
C. Charge
D. Capacitance
Answer: A
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41. What is the function of fuse in a circuit?
A. Amplifies current
B. Stops voltage
C. Protects from overload
D. Acts as a switch
Answer: C
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42. What is the value of ?
A. 1
B. 0
C. Infinity
D. Undefined
Answer: A
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43. An ideal current source has:
A. Zero current
B. Infinite voltage
C. Constant current
D. Zero resistance
Answer: C
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44. The inverse of matrix A is denoted as:
A.
B.
C.
D.
Answer: B
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45. The logic symbol “+” in Boolean algebra denotes:
A. AND
B. OR
C. NOT
D. NAND
Answer: B
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46. The dimension of power is:
A. ML²T⁻³
B. MLT⁻²
C. MLT
D. MLT⁻¹
Answer: A
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47. Which is not an SI unit?
A. Meter
B. Second
C. Erg
D. Ampere
Answer: C
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48. Which device converts mechanical energy to electrical?
A. Motor
B. Generator
C. Battery
D. Transformer
Answer: B
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49. The phase difference between voltage and current in pure resistive circuit is:
A. 0°
B. 90°
C. 180°
D. 270°
Answer: A
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50. A transformer works on which principle?
A. Ohm’s law
B. Electromagnetic induction
C. Gauss law
D. Ampere’s law
Answer: B
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