ECAT (Practice Test) FLP 13 Free Quiz

Chemis

Comput

Englis

Maths

Physic

ECAT (Practice Test) – FLP 13 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. The electron is discovered by:

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

2. The neutron was discovered by:

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

3. The plum pudding model was proposed by:

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

4. The quantum number that defines the main energy level is:

A. Principal (n) B. Azimuthal (l) C. Magnetic (m) D. Spin (s)

5. The aufbau principle states that electrons fill orbitals in order of:

A. Increasing energy B. Decreasing energy C. Increasing size D. Increasing distance from nucleus

6. The electron configuration of nitrogen (Z=7) is:

A. 1s² 2s² 2p³ B. 1s² 2s² 2p⁴ C. 1s² 2s² 2p⁵ D. 1s² 2s² 2p²

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 wave-particle duality of electrons was experimentally confirmed by:

A. Davisson and Germer B. Thomson C. Rutherford D. Millikan

9. The ionization energy generally increases across a period because:

A. Nuclear charge increases and atomic size decreases B. Nuclear charge decreases C. Atomic size increases D. Shielding increases

10. The bond angle in ammonia (NH₃) is approximately:

A. 107° B. 109.5° C. 104.5° D. 120°

11. The shape of PCl₅ is:

A. Trigonal bipyramidal B. Octahedral C. Square planar D. Tetrahedral

12. The bond order in O₂ molecule is:

A. 2 B. 1 C. 3 D. 2.5

13. The type of bond present in solid sodium is:

A. Metallic B. Ionic C. Covalent D. Hydrogen

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

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

15. For a reaction aA + bB ⇌ cC + dD, the equilibrium constant Kc is given by:

A. Kc = [C]^c [D]^d / [A]^a [B]^b B. Kc = [A]^a [B]^b / [C]^c [D]^d C. Kc = [C][D] / [A][B] D. Kc = [A] + [B] / [C] + [D]

16. If Q < K, the reaction will proceed:

A. Forward (towards products) B. Reverse (towards reactants) C. No reaction D. Equilibrium

17. For a reaction in which ΔH is negative (exothermic), lowering the temperature will:

A. Shift towards products B. Shift towards reactants C. No shift D. Increase K

18. For a reaction in which ΔH is positive (endothermic), raising the temperature will:

A. Shift towards products B. Shift towards reactants C. No shift D. Decrease K

19. For a weak acid HA, the expression for Ka is:

A. Ka = [H⁺][A⁻]/[HA] B. Ka = [HA]/[H⁺][A⁻] C. Ka = [H⁺][HA]/[A⁻] D. Ka = [A⁻]/[H⁺][HA]

20. The pH of a 0.01 M NaOH solution is approximately:

A. 12 B. 2 C. 10 D. 14

21. A salt of a strong acid and weak base (e.g., ammonium chloride) will hydrolyze to give a solution that is:

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

22. A salt of a strong acid and strong base (e.g., NaCl) will give a solution that is:

A. Neutral B. Acidic C. Basic D. Depends on concentration

23. For the reaction N₂O₄(g) ⇌ 2NO₂(g), ΔH > 0. Increasing temperature will:

A. Shift towards products (NO₂) B. Shift towards reactants C. No shift D. Depends on pressure

24. The branch of chemistry that deals with the study of electrical energy from chemical reactions is called:

A. Electrochemistry B. Thermodynamics C. Kinetics D. Spectroscopy

25. The electrode where oxidation occurs is called:

A. Anode B. Cathode C. Salt bridge D. Electrolyte

26. In a hydrogen fuel cell, the reaction at the anode is:

A. H₂ → 2H⁺ + 2e⁻ B. O₂ + 4H⁺ + 4e⁻ → 2H₂O C. H₂ + 2OH⁻ → 2H₂O + 2e⁻ D. O₂ + 2H₂O + 4e⁻ → 4OH⁻

27. The oxidation number of an element in its free state is:

A. 0 B. 1 C. -1 D. Variable

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

A. Zn B. Cu²⁺ C. Zn²⁺ D. Cu

29. A substance with lower reduction potential is a better:

A. Reducing agent B. Oxidizing agent C. Electrolyte D. Conductor

30. Corrosion of iron is an electrochemical process. The anodic reaction is:

A. Fe → Fe²⁺ + 2e⁻ B. O₂ + 2H₂O + 4e⁻ → 4OH⁻ C. Fe²⁺ + 2e⁻ → Fe D. 4OH⁻ → O₂ + 2H₂O + 4e⁻

Computer Science 30 MCQs

31. In the aviation industry, computers are used for:

A. Flight planning and navigation B. Only serving food C. Only cleaning planes D. Only checking tickets

32. Rows in a database table are called:

A. Records B. Fields C. Columns D. Attributes

33. A primary key is used to:

A. Uniquely identify each record B. Store images C. Sort data D. Delete data

34. Which of the following is used to connect to the Internet?

A. Modem B. Keyboard C. Monitor D. Mouse

35. A pipeline in a CPU is used to:

A. Process multiple instructions simultaneously in stages B. Store more data C. Increase memory size D. Connect to peripherals

36. Data is defined as:

A. Raw, unprocessed facts B. Processed information C. A computer program D. A type of storage

37. Unicode is used to:

A. Represent characters from many languages B. Store binary data C. Compress files D. Encrypt data

38. In half-duplex mode, data can flow:

A. Both directions but not simultaneously B. Only one direction C. Both directions simultaneously D. Not at all

39. A candidate key is:

A. A minimal set of columns that can uniquely identify a row B. The primary key C. A foreign key D. A super key

40. Physical design involves:

A. Storage structures, indexing, and performance tuning B. Creating ER diagrams C. Normalization D. Requirement gathering

41. In the network model, data is organized as:

A. A graph with nodes and edges B. A tree C. A table D. A flat file

42. The final step of database design is:

A. Implementation and testing B. Requirement analysis C. Conceptual design D. Logical design

43. A digital computer uses which number system internally?

A. Binary B. Decimal C. Hexadecimal D. Octal

44. Which gate outputs 1 only when all inputs are 1?

A. AND B. OR C. NOT D. NAND

45. Which of these is not a valid data type in C?

A. byte B. int C. float D. char

46. Which layer of the OSI model is responsible for routing?

A. Network layer B. Data link layer C. Physical layer D. Transport layer

47. What does the acronym PAN stand for?

A. Personal Area Network B. Public Area Network C. Private Area Network D. Primary Area Network

48. Which input device is commonly used with laptops to control the cursor?

A. Touchpad B. Scanner C. Digital camera D. Barcode reader

49. Which of the following is application software?

A. Microsoft Word B. Windows C. Linux D. macOS

50. A port is used to:

A. Connect external devices to the computer B. Store data C. Process data D. Display output

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

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

52. Which loop checks the condition at the beginning?

A. while loop B. do-while loop C. for loop D. Both A and C

53. What is the purpose of the condition part in a loop?

A. To decide whether to continue or stop B. To initialize variables C. To update variables D. To print output

54. Which of these statements can be used to exit a nested loop prematurely from the inner loop?

A. break B. continue C. return D. exit

55. Which view allows you to see how a report will look when printed?

A. Print Preview B. Design View C. Layout View D. Report View

56. What is the function of a USB flash drive?

A. To store and transfer data B. To input data C. To output data D. To connect to a network

57. Which type of join returns only rows with matching values in both tables?

A. INNER JOIN B. LEFT JOIN C. RIGHT JOIN D. FULL OUTER JOIN

58. Which shortcut keys are used to paste a file in Windows?

A. Ctrl + V B. Ctrl + C C. Ctrl + X D. Ctrl + Z

59. What is the purpose of the Task Manager in Windows?

A. To view and manage running processes and performance B. To change desktop background C. To install software D. To create documents

60. What is the purpose of a table in Word?

A. To organize data in rows and columns B. To draw pictures C. To create lists D. To insert spreadsheets

English 10 MCQs

61. Which of the following is NOT mentioned as a benefit of exercise?

A. Improved eyesight B. Better circulation C. Weight control D. Reduced stress

62. Read the passage: "Friendship is one of the most important relationships in life. Good friends provide emotional support, reduce stress, and increase happiness. They also encourage healthy habits and help us grow as individuals. However, maintaining friendships requires time, effort, and mutual trust." What is the main idea?

A. Friendship is valuable but requires effort to maintain B. Friends are not important C. Friendships are easy to keep D. Friends only bring stress

63. Why are renewable sources considered sustainable?

A. They are abundant and clean B. They are limited C. They produce waste D. They use fossil fuels

64. What is the benefit of renewable energy in the long run?

A. Saves money and reduces fossil fuel dependence B. Increases energy costs C. Creates more pollution D. Uses more fossil fuels

65. What does "ripple effect" mean?

A. The spreading effect of an action B. A small wave C. A negative consequence D. A stopping point

66. The tone of the passage is:

A. Warm and uplifting B. Sarcastic C. Depressing D. Indifferent

67. What skill does education provide?

A. Critical thinking B. Only memorization C. Only physical strength D. Only social skills

68. What should a balanced diet include?

A. Fruits, vegetables, whole grains, lean proteins B. Only fruits C. Only meat D. Only processed foods

69. What is a consequence of poor sleep mentioned?

A. Weakened immune function B. Increased energy C. Better memory D. Improved mood

70. Which of the following is NOT a benefit mentioned?

A. Financial gain B. Personal growth C. Reduced stress D. Appreciation of diversity

Maths 30 MCQs

71. What is the reciprocal of 2/3?

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

72. What is the value of 4! (4 factorial)?

A. 24 B. 16 C. 12 D. 20

73. What is the value of (a+b)² - (a-b)²?

A. 4ab B. 2a²+2b² C. 2ab D. a²+b²

74. What is the slope of a vertical line?

A. Undefined B. 0 C. 1 D. -1

75. Find the slope of the line perpendicular to y = (2/3)x + 1.

A. -3/2 B. 3/2 C. 2/3 D. -2/3

76. What is the distance from point (3,4) to the y-axis?

A. 3 B. 4 C. 5 D. 0

77. What is the midpoint of the segment joining (a,b) and (c,d)?

A. ((a+c)/2, (b+d)/2) B. ((a-c)/2, (b-d)/2) C. ((a+d)/2, (b+c)/2) D. ((a+b)/2, (c+d)/2)

78. What is the derivative of f(x) = 3x² + 2x + 1 at x=1?

A. 8 B. 6 C. 4 D. 10

79. Find the derivative of f(x) = 2x^4 - 3x^3 + x^2 - 1. at x=1?

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

80. Find the derivative of f(x) = sin x + cos x at x=0.

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

81. What is ∫ (x³ + 1) dx?

A. x⁴/4 + x + C B. x⁴/4 + C C. x⁴/4 + x D. 3x² + x

82. What is ∫ (1/(x+1)) dx?

A. ln|x+1| + C B. ln(x+1) + C C. 1/(x+1) + C D. ln|x+1|

83. What is ∫ 3/x dx?

A. 3 ln|x| + C B. 3 ln x + C C. ln|3x| + C D. 3/x + C

84. What is the union of sets A={1,2,3} and B={3,4,5}?

A. {1,2,3,4,5} B. {3} C. {1,2} D. {4,5}

85. What is the LCM of 4 and 6?

A. 12 B. 24 C. 8 D. 2

86. What is the nth term of an arithmetic sequence with first term a and common difference d?

A. a+(n-1)d B. a+nd C. a+(n+1)d D. a-d

87. What is the common ratio of sequence 81,27,9,3?

A. 1/3 B. 3 C. 1/9 D. 9

88. What is the product of first 3 terms of a G.P with a=2 and r=3?

A. 216 B. 72 C. 6 D. 54

89. What is the mean of first 5 natural numbers?

A. 3 B. 5 C. 2.5 D. 4

90. What is the arithmetic mean of 2 and 8?

A. 5 B. 4 C. 6 D. 10

91. What is the 10th term of sequence 7, 10, 13, 16?

A. 34 B. 30 C. 37 D. 31

92. What is the median of 3, 5, 7, 9, 11?

A. 7 B. 5 C. 9 D. 8

93. What is the probability of getting a head when tossing a coin?

A. 1/2 B. 1/4 C. 1 D. 0

94. What is the probability of getting a number less than 3 when rolling a die?

A. 1/3 B. 1/2 C. 1/6 D. 2/3

95. What is the value of cos 90°?

A. 0 B. 1 C. 1/2 D. √3/2

96. If vector A = (5,2) and vector B = (3,1), what is A - B?

A. (2,1) B. (2,1) C. (8,3) D. (2,3)

97. What is the magnitude of the vector (6,8)?

A. 10 B. 14 C. 2 D. 100

98. What is the scalar product of i and i?

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

99. What is the condition for two vectors to be perpendicular?

A. Their dot product is zero B. Their cross product is zero C. Their sum is zero D. Their magnitudes are equal

100. What is the direction of vector -3i + 4j?

A. Quadrant II B. Quadrant I C. Quadrant III D. Quadrant IV

Physics 30 MCQs

101. The SI unit of electric current is:

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

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

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

103. In a series circuit, the current is:

A. Same through all components B. Different through each C. Zero D. Maximum in the largest resistor

104. In a parallel circuit, the voltage is:

A. Same across all branches B. Different across each branch C. Zero D. Divided equally

105. The SI unit of electric power is:

A. Watt B. Joule C. Volt-ampere D. Both A and C

106. A galvanometer can be converted into a voltmeter by connecting:

A. A high resistance in series B. A low resistance in parallel C. A high resistance in parallel D. A low resistance in series

107. The resistance of an ammeter should be:

A. Very low B. Very high C. Infinite D. Zero

108. The force between two parallel current-carrying conductors is attractive if the currents are:

A. In the same direction B. In opposite directions C. Perpendicular D. Zero

109. The study of electric charges at rest is called:

A. Electrostatics B. Electrodynamics C. Electromagnetism D. Electronics

110. The escape velocity from Earth is approximately:

A. 11.2 km/s B. 7.9 km/s C. 3 km/s D. 8 km/s

111. The orbital velocity of a satellite near Earth's surface is approximately:

A. 7.9 km/s B. 11.2 km/s C. 5 km/s D. 10 km/s

112. If the mass of one of the two objects is doubled, the gravitational force becomes:

A. Double B. Half C. Four times D. Same

113. The weight of an object is less at the equator than at the poles because:

A. Centrifugal effect and equatorial bulge B. The mass is less C. The Earth's radius is smaller at equator D. Gravitational constant changes

114. The efficiency of the heat engine in question above is:

A. 60% B. 40% C. 100% D. 0%

115. Newton's first law of motion is also called:

A. Law of inertia B. Law of acceleration C. Law of action-reaction D. Law of gravitation

116. The SI unit of force is:

A. Newton B. Joule C. Watt D. Pascal

117. The resultant of two equal vectors of magnitude F acting at 90° has magnitude:

A. F√2 B. 2F C. F/√2 D. F

118. The dot product of two perpendicular vectors is:

A. Zero B. AB C. -AB D. A/B

119. The first postulate of special relativity states that the laws of physics are the same in all:

A. Inertial reference frames B. Non-inertial frames C. Accelerated frames D. Gravitational frames

120. The special theory of relativity deals with:

A. Objects moving at constant velocity (inertial frames) B. Accelerated frames C. Gravitational fields D. Electromagnetic waves

121. The de Broglie wavelength of an electron accelerated through a potential V is:

A. λ = h / √(2meV) B. λ = h √(2meV) C. λ = √(2meV) / h D. λ = h / (2meV)

122. The refractive index of a medium is the ratio of:

A. Speed of light in vacuum to speed in medium B. Speed in medium to speed in vacuum C. Wavelength in vacuum to wavelength in medium D. Both A and C

123. The phenomenon of splitting of white light into its constituent colors is called:

A. Dispersion B. Refraction C. Reflection D. Diffraction

124. Optical fibers work on the principle of:

A. Total internal reflection B. Refraction C. Dispersion D. Interference

125. The centripetal acceleration is given by:

A. a_c = v²/r B. a_c = ω²r C. Both A and B D. a_c = v r

126. The angular acceleration is related to the tangential acceleration a_t by:

A. a_t = α r B. a_t = α/r C. a_t = r/α D. a_t = α r²

127. A stationary wave is formed by the superposition of two waves of the same frequency and amplitude traveling in:

A. Opposite directions B. Same direction C. Perpendicular directions D. Any directions

128. The pitch of a sound depends on its:

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

129. The total mechanical energy of a system is conserved in the absence of:

A. Non-conservative forces (friction) B. Conservative forces C. Gravity D. Elastic forces

130. A battery has an internal resistance of 0.5Ω and delivers a current of 2A. If the terminal voltage is 11V, what is the EMF of the battery?

A. 10V B. 11V C. 12V D. 13V

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