ECAT (Practice Test) FLP 18 Free Quiz

Chemis

Comput

Englis

Maths

Physic

ECAT (Practice Test) – FLP 18 consists of 130 MCQs covering 5 subjects. You have 100 minutes to complete it. Start with the easier questions and manage your time wisely. Good luck!

Chemistry 30 MCQs

1. Isotopes have the same number of protons but different number of:

A. Neutrons B. Electrons C. Protons D. Nucleons

2. The neutron was discovered by:

A. Chadwick B. Rutherford C. J.J. Thomson D. Bohr

3. The mass of an electron is approximately:

A. 9.1 × 10⁻³¹ kg B. 1.67 × 10⁻²⁷ kg C. 1.0 × 10⁻³⁰ kg D. 9.1 × 10⁻²⁸ kg

4. The Heisenberg uncertainty principle states that it is impossible to determine simultaneously the exact position and exact momentum of a particle. The relation is:

A. Δx · Δp ≥ h/4π B. Δx · Δp ≤ h/4π C. Δx · Δp ≥ h/2π D. Δx · Δp = 0

5. The maximum number of electrons in a subshell is:

A. 2(2l+1) B. 2l+1 C. 2n² D. 2n

6. The shape of an s orbital is:

A. Spherical B. Dumbbell C. Complex D. Double dumbbell

7. The element with atomic number 24 is chromium. Its electron configuration is:

A. [Ar] 3d⁵ 4s¹ B. [Ar] 3d⁴ 4s² C. [Ar] 3d⁵ 4s² D. [Ar] 3d⁶ 4s¹

8. The Paschen series of hydrogen lies in the:

A. Infrared region B. UV region C. Visible region D. X-ray region

9. The number of nodes in a 3s orbital is:

A. 2 B. 1 C. 3 D. 0

10. The force that holds atoms together in a molecule is called:

A. Chemical bond B. Hydrogen bond C. Van der Waals force D. Ionic bond

11. The bond angle in methane (CH₄) is:

A. 109.5° B. 120° C. 104.5° D. 180°

12. The shape of BeCl₂ is:

A. Linear B. Bent C. Tetrahedral D. Trigonal planar

13. The hydrogen bond is a type of:

A. Intermolecular force B. Intramolecular force C. Ionic bond D. Covalent bond

14. The bond length decreases as bond order:

A. Increases B. Decreases C. Remains same D. Is zero

15. The hybridisation of beryllium in BeCl₂ is:

A. sp B. sp² C. sp³ D. sp³d

16. The hybridisation of oxygen in water is:

A. sp³ B. sp² C. sp D. sp³d

17. A double bond consists of:

A. One sigma and one pi bond B. Two sigma bonds C. Two pi bonds D. One sigma and two pi bonds

18. The number of lone pairs on central atom in XeF₄ is:

A. 2 B. 1 C. 3 D. 0

19. The Lewis structure of CO₂ shows:

A. Two double bonds B. One double and one single C. Two single bonds D. Triple bond

20. The equilibrium constant Kc is expressed in terms of:

A. Concentrations B. Pressures C. Mole fractions D. Partial pressures

21. For an endothermic reaction, increasing temperature will:

A. Increase K B. Decrease K C. No change D. Depends on pressure

22. For the reaction N₂ + 3H₂ ⇌ 2NH₃, increasing pressure will shift equilibrium:

A. Towards products (more NH₃) B. Towards reactants C. No shift D. Depends on temperature

23. The base dissociation constant Kb is a measure of:

A. Base strength B. Acid strength C. Salt hydrolysis D. pH

24. The pH of a 0.01 M HCl solution is approximately:

A. 2 B. 1 C. 3 D. 4

25. A salt of a weak acid and strong base (e.g., sodium acetate) will hydrolyze to give a solution that is:

A. Basic B. Acidic C. Neutral D. Amphoteric

26. The equilibrium constant for the reaction A ⇌ B is K. If the reaction is reversed and multiplied by 2, the new equilibrium constant is:

A. 1/K² B. K² C. 1/K D. K

27. The solubility of AgCl in water is decreased by the addition of NaCl because:

A. Common ion effect (Cl⁻) B. Acid-base reaction C. Temperature change D. Complex formation

28. The standard electrode potential (E°) of hydrogen electrode is arbitrarily assigned as:

A. 0.00 V B. 1.00 V C. -0.76 V D. 0.34 V

29. The amount of substance deposited during electrolysis is directly proportional to the charge passed. This is Faraday's:

A. First law B. Second law C. Third law D. Law of electrolysis

30. In the reaction Zn + Cu²⁺ → Zn²⁺ + Cu, the reducing agent is:

A. Zn B. Cu²⁺ C. Zn²⁺ D. Cu

Computer Science 30 MCQs

31. Computers help in scientific research by:

A. Analyzing data and simulations B. Only storing books C. Only making tea D. Only drawing pictures

32. Which of the following is an example of computer use in education?

A. E-learning platforms and virtual classrooms B. Only playing games C. Only watching videos D. Only typing notes

33. A database is defined as:

A. A collection of organized data B. A collection of random data C. A computer program D. A type of hardware

34. Which bus connects the CPU to memory?

A. System bus B. I/O bus C. Data bus D. Address bus

35. Von Neumann architecture is characterized by:

A. Stored program concept B. Parallel processing C. Distributed memory D. No memory

36. What is the decimal equivalent of binary 1010?

A. 10 B. 8 C. 12 D. 14

37. Bluetooth is used for:

A. Short-range wireless communication B. Long-range satellite communication C. Fiber optic communication D. Cable television

38. In an ER diagram, an entity is represented by:

A. A rectangle B. A diamond C. An ellipse D. A line

39. Which operator checks for "not equal to"?

A. != B. == C. ! D. <>

40. In an if statement, which of the following is considered false?

A. 0 B. 1 C. true D. 5

41. The control unit (CU) is responsible for:

A. Directing the fetch-execute cycle B. Performing arithmetic C. Storing data D. Input/output

42. Which header file is needed for string functions in C?

A. string.h B. stdio.h C. stdlib.h D. math.h

43. The static keyword in a function variable means:

A. The variable retains its value between calls B. The variable is local C. The variable is global D. The variable is constant

44. Which protocol is used for receiving email?

A. POP3 or IMAP B. SMTP C. HTTP D. FTP

45. Which compiler is commonly used for C on Linux?

A. gcc B. javac C. python D. g++

46. Which of the following is an input device?

A. Keyboard B. Monitor C. Printer D. Speaker

47. Which device is used to capture audio input?

A. Microphone B. Speaker C. Headphone D. Monitor

48. Which device is used to enter data from pre-printed forms and surveys?

A. OMR (Optical Mark Reader) B. OCR C. Barcode reader D. Scanner

49. A computer is a device that:

A. Processes data according to instructions B. Only stores data C. Only displays data D. Only prints data

50. Which device is known as the "brain" of the computer?

A. CPU B. RAM C. Hard disk D. Motherboard

51. Which data type in Access is used for whole numbers?

A. Number B. Text C. Date/Time D. Currency

52. Which data type in Access is used for long text (up to 65,535 characters)?

A. Long Text B. Text C. Number D. Memo

53. Which data type is used for short text (up to 255 characters)?

A. Short Text B. Long Text C. Number D. Date/Time

54. What is the output: int i=0; do { i++; printf("%d", i); } while(i<2);

A. 12 B. 01 C. 1 D. 2

55. What is the difference between freeware and shareware?

A. Freeware is free; shareware is free to try but requires payment B. Freeware is trial; shareware is free C. Both are paid D. Both are free

56. What is a zero-day vulnerability?

A. A software flaw unknown to the vendor and unpatched B. A virus that has existed for zero days C. A perfectly secure system D. A type of firewall

57. What is an absolute cell reference?

A. A reference that remains fixed when copied (e.g., $A$1) B. A reference that changes when copied C. A reference to a named range D. A reference to another worksheet

58. Which clause is used to filter groups after GROUP BY?

A. HAVING B. WHERE C. GROUP BY D. ORDER BY

59. The File Explorer in Windows is used to:

A. Browse and manage files and folders B. Change system settings C. Install software D. Browse the internet

60. Which of the following is a file system used by Windows?

A. NTFS B. FAT32 C. exFAT D. All of the above

English 10 MCQs

61. What does "hydrated" mean?

A. Having enough water B. Being dry C. Being tired D. Being ill

62. What is needed to maintain friendships?

A. Time, effort, and trust B. Money C. Gifts D. Social media

63. What is the overall tone?

A. Warm and encouraging B. Cold and distant C. Sarcastic D. Indifferent

64. Read the passage: "Social media has transformed how we communicate. It allows instant connection with people worldwide and can be a source of information and entertainment. However, excessive use can lead to anxiety, poor sleep, and reduced face-to-face interactions. It is important to use social media mindfully." What is the main idea?

A. Social media has both benefits and risks B. Social media is entirely bad C. Social media is only for entertainment D. Social media has no effect on health

65. The passage suggests we should use social media:

A. With caution B. Without limits C. Only for work D. Never

66. What is the meaning of "abundant"?

A. Plentiful B. Scarce C. Rare D. Limited

67. Which word means the opposite of "kindness"?

A. Cruelty B. Gentleness C. Generosity D. Patience

68. Which of the following is NOT mentioned as a result of poor sleep?

A. Increased physical strength B. Weight gain C. Mood disorders D. Weak immunity

69. What does "appreciate" mean?

A. Value or understand B. Dislike C. Ignore D. Criticize

70. The tone of the passage is:

A. Positive and encouraging B. Negative C. Indifferent D. Sarcastic

Maths 30 MCQs

71. What is the value of log₂ 32?

A. 5 B. 4 C. 6 D. 3

72. What is the square root of 144?

A. 12 B. 14 C. 10 D. 16

73. What is the exponential form of log₃ 81 = 4?

A. 3⁴ = 81 B. 81⁴ = 3 C. 4³ = 81 D. 3⁸¹ = 4

74. What is the value of sin 30°?

A. 1/2 B. √3/2 C. √2/2 D. 1

75. What is the slope of the line 2x - 5y = 10?

A. 2/5 B. -2/5 C. 5/2 D. -5/2

76. What is the slope of the line 4x - 2y = 8?

A. 2 B. -2 C. 4 D. -4

77. What is the x-intercept of 3x + 4y = 12?

A. 4 B. 3 C. 12 D. -4

78. Find the distance between points (-1,-2) and (3,4).

A. √52 B. √20 C. √36 D. √72

79. What is the derivative of a constant function f(x) = 7?

A. 0 B. 7 C. 1 D. 7x

80. What is the derivative of f(x) = 3x² + 2 at x=0?

A. 0 B. 2 C. 6 D. 8

81. What is the derivative of f(x) = 2^x?

A. 2^x ln 2 B. 2^x C. x 2^{x-1} D. ln 2

82. What is the derivative of f(x) = log₂ x?

A. 1/(x ln 2) B. 1/x C. ln 2 / x D. 1/(ln 2)

83. Find the derivative of f(x) = ln(3x).

A. 1/x B. 3/x C. 1/(3x) D. 3

84. What is the derivative of f(x) = x^2 ln x?

A. x(2 ln x + 1) B. x(2 ln x - 1) C. x² ln x D. 2x ln x

85. What is the area under the curve y = x from 0 to 3?

A. 4.5 B. 3 C. 6 D. 9

86. What is ∫ (2x+3)² dx?

A. 4x³/3 + 6x² + 9x + C B. 2x² + 6x + C C. 4x³/3 + 9x + C D. 4x³/3 + 6x + C

87. Which of the following is a transcendental number?

A. π B. √2 C. 1/3 D. 0.5

88. What is the value of (2a+3b) when a=2 and b=1?

A. 7 B. 8 C. 9 D. 10

89. Which of the following sequences is geometric?

A. 3, 6, 12, 24 B. 3, 6, 9, 12 C. 3, 9, 27 D. Both A and C

90. What is the sum of infinite G.P 1 + 1/3 + 1/9 + 1/27 + ...?

A. 1.5 B. 1 C. 2 D. 1.333

91. What is the sum of 1+2+3+...+n?

A. n(n+1)/2 B. n(n+1) C. n² D. n(n-1)/2

92. What is the standard deviation of data 2,3,4,5?

A. √1.25 B. 1 C. 2 D. 1.5

93. What is the mode of 2,2,3,4,5,5,5?

A. 5 B. 2 C. 3 D. 4

94. What is the value of cos 0°?

A. 1 B. 0 C. 1/2 D. √3/2

95. What is the value of cos 60°?

A. 1/2 B. √3/2 C. 1 D. 0

96. What is the value of sin(π/3)?

A. √3/2 B. 1/2 C. √2/2 D. 1

97. What is the value of tan(π/4) + cot(π/4)?

A. 2 B. 1 C. 0 D. √2

98. If A = (2,1) and B = (1,3), what is 2A - B?

A. (3,-1) B. (3,-1) C. (0,5) D. (4,2)

99. What is the magnitude of a unit vector?

A. 1 B. 0 C. ∞ D. variable

100. What is the midpoint vector of points A(1,2) and B(3,4)?

A. 2i + 3j B. 4i + 6j C. 2i + 2j D. 2i + 3j

Physics 30 MCQs

101. Ohm's law states that the current through a conductor is directly proportional to:

A. Voltage B. Resistance C. Power D. Charge

102. The reciprocal of resistance is called:

A. Conductance B. Conductivity C. Impedance D. Reactance

103. The Wheatstone bridge is used to measure:

A. Unknown resistance B. Current C. Voltage D. Power

104. The condition for a balanced Wheatstone bridge is:

A. P/Q = R/S B. P = Q C. R = S D. P/R = Q/S

105. When a cell is short-circuited, the current is:

A. Maximum B. Zero C. Minimum D. Equal to EMF

106. The torque on a current-carrying coil in a magnetic field is maximum when the plane of the coil is:

A. Parallel to the field B. Perpendicular to the field C. At 45° D. At any angle

107. The principle of a moving coil galvanometer is:

A. Torque on a current-carrying coil in a magnetic field B. Force on a moving charge C. Electromagnetic induction D. Mutual induction

108. The Biot-Savart law gives the magnetic field due to a:

A. Current element B. Point charge C. Magnetic dipole D. Electric dipole

109. The SI unit of electric charge is:

A. Coulomb B. Ampere C. Volt D. Ohm

110. Two capacitors C1 and C2 in parallel have equivalent capacitance:

A. C_eq = C1 + C2 B. C_eq = (C1 C2)/(C1+C2) C. C_eq = 1/C1 + 1/C2 D. C_eq = C1 - C2

111. The law of gravitation applies to:

A. All bodies with mass B. Only planets C. Only stars D. Only charged bodies

112. In an isobaric process, the pressure is:

A. Constant B. Increasing C. Decreasing D. Zero

113. The efficiency of a Carnot engine depends on the temperatures of the:

A. Hot and cold reservoirs B. Working substance C. Amount of heat D. Pressure

114. A heat engine absorbs 1000 J of heat from a hot reservoir and rejects 400 J to cold. The work done is:

A. 600 J B. 400 J C. 1000 J D. 1400 J

115. The acceleration of an object is inversely proportional to:

A. Mass B. Force C. Velocity D. Time

116. The coefficient of friction depends on:

A. The nature of the surfaces B. The area of contact C. The speed of sliding D. The weight

117. The condition for translational equilibrium is:

A. ΣF = 0 B. Στ = 0 C. ΣF ≠ 0 D. Σv = 0

118. The number of significant figures in 0.00560 is:

A. 3 B. 5 C. 4 D. 2

119. The minimum frequency required for photoelectric emission is called:

A. Threshold frequency B. Cut-off frequency C. Both A and B D. Resonant frequency

120. The formula for length contraction is:

A. L = L₀ √(1 - v²/c²) B. L = L₀ / √(1 - v²/c²) C. L = L₀ (1 - v/c) D. L = L₀ / (1 - v/c)

121. The photoelectric effect proves the:

A. Particle nature of light B. Wave nature of light C. Both D. Neither

122. Photoelectric emission is an instantaneous process because:

A. Photon-electron interaction is almost immediate B. Electrons are already free C. Thermal effects D. High intensity

123. A virtual image cannot be formed on a screen because:

A. Light rays only appear to diverge from the image B. Light rays converge C. It is inverted D. It is too small

124. The relation between linear velocity v and angular velocity ω is:

A. v = ω r B. v = r/ω C. v = ω/r D. v = ω r²

125. The moment of inertia I of a rigid body is the rotational analog of:

A. Mass B. Force C. Velocity D. Acceleration

126. The number of waves passing a point per second is called:

A. Frequency B. Wavelength C. Amplitude D. Speed

127. The energy possessed by a body due to its motion is called:

A. Kinetic energy B. Potential energy C. Internal energy D. Mechanical energy

128. A body of mass 5 kg is moving with a speed of 4 m/s. Its kinetic energy is:

A. 40 J B. 20 J C. 80 J D. 10 J

129. Three resistors of 3Ω, 5Ω, and 10Ω are connected in parallel. Which resistor dissipates the most power?

A. 10Ω resistor B. 5Ω resistor C. 3Ω resistor D. All dissipate equal power

130. A battery has an EMF of 12V and internal resistance 0.2Ω. When a current of 5A is drawn, what is the terminal voltage?

A. 10V B. 11V C. 11.5V D. 12V

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