ECAT (Practice Test) FLP 16 Free Quiz

Chemis

Comput

Englis

Maths

Physic

ECAT (Practice Test) – FLP 16 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 nucleus of an atom contains:

A. Protons and neutrons B. Protons and electrons C. Neutrons and electrons D. Protons only

2. The gold foil experiment was performed by:

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

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

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

4. The shape of an s orbital is:

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

5. The Pauli exclusion principle states that no two electrons in an atom can have the same set of:

A. Four quantum numbers B. Three quantum numbers C. Two quantum numbers D. One quantum number

6. The Lyman series of hydrogen lies in the:

A. Ultraviolet region B. Visible region C. Infrared region D. Microwave region

7. The Paschen series of hydrogen lies in the:

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

8. 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

9. The electron affinity is the energy change when an electron is added to a neutral atom. It is most exothermic for halogens because:

A. They have high nuclear charge and small size B. They have low nuclear charge C. They are large D. They have full shells

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

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

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

A. 109.5° B. 120° C. 104.5° D. 180°

12. The bond in F₂ is:

A. Nonpolar covalent B. Polar covalent C. Ionic D. Metallic

13. The bond in metals is:

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

14. The hybridisation of carbon in ethyne (C₂H₂) is:

A. sp B. sp² C. sp³ D. sp³d

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. Le Chatelier's principle states that if a system at equilibrium is disturbed, the system will shift to:

A. Counteract the disturbance B. Enhance the disturbance C. Ignore the disturbance D. Reach equilibrium faster

17. The addition of a catalyst to a reaction at equilibrium:

A. Does not shift equilibrium B. Shifts equilibrium to products C. Shifts equilibrium to reactants D. Increases K

18. The equilibrium constant for the reaction H₂ + I₂ ⇌ 2HI is K. What is K for ½H₂ + ½I₂ ⇌ HI?

A. √K B. K² C. K D. 1/K

19. 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

20. For CaCO₃(s) ⇌ Ca²⁺(aq) + CO₃²⁻(aq), the Ksp expression is:

A. Ksp = [Ca²⁺][CO₃²⁻] B. Ksp = [CaCO₃] C. Ksp = [Ca²⁺] + [CO₃²⁻] D. Ksp = [Ca²⁺]/[CO₃²⁻]

21. 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

22. Faraday's second law states that when the same charge passes through different electrolytes, the masses deposited are proportional to:

A. Equivalent weights B. Atomic masses C. Molar masses D. Valencies

23. In electroplating, the metal to be plated is used as the:

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

24. The electrolyte used in a lead-acid battery is:

A. Sulfuric acid (H₂SO₄) B. Nitric acid C. Hydrochloric acid D. Sodium chloride

25. A fuel cell converts chemical energy directly into electrical energy with efficiency higher than combustion. The most common fuel cell uses:

A. H₂ and O₂ B. CH₄ and O₂ C. CO and H₂ D. C₂H₅OH and O₂

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. 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⁻

29. In electrolysis of aqueous NaCl, the product at anode is:

A. Cl₂ B. O₂ C. H₂ D. Na

30. The standard electrode potential of Cu²⁺/Cu is +0.34 V. Which statement is true about Cu?

A. Cu is a stronger reducing agent than Zn B. Cu²⁺ is a stronger oxidizing agent than Zn²⁺ C. Cu is easily oxidized D. Cu has low reduction potential

Computer Science 30 MCQs

31. In agriculture, computers help with:

A. Monitoring crops and weather B. Only ploughing C. Only harvesting D. Only watering

32. Computers are used in transportation for:

A. Traffic control and navigation B. Only driving cars C. Only flying planes D. Only building roads

33. Computers help in scientific research by:

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

34. Columns in a database table are called:

A. Fields or attributes B. Records C. Rows D. Tuples

35. Which SQL command is used to add new records?

A. INSERT B. SELECT C. UPDATE D. DELETE

36. Which of these is application software?

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

37. Clock speed is measured in:

A. Hertz (Hz) B. Bytes C. Bits D. Watts

38. Which of the following is a wireless communication technology?

A. Wi-Fi B. Ethernet C. Fiber optic D. Coaxial cable

39. Which normalization form deals with "a relation is in 2NF and has no transitive dependencies"?

A. 3NF B. 2NF C. 1NF D. BCNF

40. Cardinality in ER diagrams defines:

A. The number of entity occurrences involved in a relationship B. The size of the database C. The number of attributes D. The type of key

41. A strong entity has:

A. Its own primary key B. No primary key C. Foreign key only D. No attributes

42. Which statement is used for multiple independent conditions?

A. if-else if ladder B. switch C. for D. while

43. A digital computer uses which number system internally?

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

44. Which flip-flop is used as a data latch?

A. D flip-flop B. JK flip-flop C. SR flip-flop D. T flip-flop

45. Which format specifier is used for reading a string (with spaces) in C?

A. %s B. %c C. %d D. %f

46. Which function is used to compare two strings in C?

A. strcmp() B. strcpy() C. strlen() D. strcat()

47. The function used to open a file in C is:

A. fopen() B. open() C. file_open() D. fopen()

48. The file pointer in C is of type:

A. FILE * B. file * C. FILE D. fptr

49. Which function moves the file pointer to a specific position?

A. fseek() B. ftell() C. rewind() D. fgetpos()

50. What is the output: int c; while ((c = fgetc(fp)) != EOF) { putchar(c); }

A. Prints the entire file contents B. Prints only first character C. Prints only last character D. Does nothing

51. The correct syntax for a function definition is:

A. return_type function_name(parameters) { body } B. function_name(parameters) { body } C. return_type function_name(parameters) { body } D. All of the above

52. What is a firewall?

A. A security system that monitors network traffic B. A web browser C. A search engine D. An email client

53. A scanner is used to:

A. Convert printed text/images into digital data B. Display images C. Print documents D. Record audio

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

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

55. A primary key in Access is used to:

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

56. Which wizard is used to create a report with a professional layout?

A. Report Wizard B. Form Wizard C. Query Wizard D. Table Wizard

57. A label control in a form is used for:

A. Displaying static text B. Entering data C. Calculating values D. Printing data

58. What is the difference between a form and a report?

A. Forms are for data entry; reports are for data presentation/printing B. Forms are for printing; reports are for entering data C. Forms store data; reports query data D. There is no difference

59. What is a trigger in a database?

A. A procedural code that automatically executes in response to events B. A query C. A table D. An index

60. What is a page break used for?

A. To start a new page B. To end a document C. To insert a table D. To change margins

English 10 MCQs

61. How many minutes of moderate activity are recommended per week?

A. 150 minutes B. 100 minutes C. 200 minutes D. 50 minutes

62. What does "biodegradable" mean?

A. Capable of being broken down naturally B. Lasting forever C. Toxic D. Non-recyclable

63. 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

64. What is the meaning of "transformed"?

A. Changed dramatically B. Stayed the same C. Worsened D. Improved slightly

65. What is the author's tone?

A. Balanced and cautionary B. Overly optimistic C. Overly pessimistic D. Indifferent

66. The passage suggests that renewable energy is:

A. Worth the investment B. Not worth the cost C. Only for the future D. Ineffective

67. What is the meaning of "innovation"?

A. New ideas or methods B. Old traditions C. Stagnation D. Rejection of change

68. The tone of the passage is:

A. Urgent and concerned B. Careless C. Indifferent D. Humorous

69. What is a consequence of poor sleep mentioned?

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

70. Read the passage: "Traveling exposes people to new cultures, cuisines, and perspectives. It broadens the mind, reduces stress, and creates lasting memories. Whether domestic or international, travel encourages personal growth and helps people appreciate diversity. Even short trips can have a positive impact on mental health." What is the main idea?

A. Travel has positive effects on personal growth and mental well-being B. Travel is only for the wealthy C. Travel is a waste of time D. Travel causes stress

Maths 30 MCQs

71. Solve for x: 2x - 5 = 9

A. 7 B. 6 C. 8 D. 5

72. What is the value of sin²θ + cos²θ?

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

73. What is the distance between points (2,3) and (5,7)?

A. 5 B. 4 C. 3 D. √5

74. What is the distance from (0,0) to the line 3x+4y=15?

A. 3 B. 5 C. 15 D. 4

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

A. 2e^(2x) B. e^(2x) C. 2xe^(2x) D. e^(2x)

76. What is the derivative of f(x) = sin(2x)?

A. 2 cos(2x) B. cos(2x) C. -2 sin(2x) D. 2 sin(2x)

77. Find the critical points of f(x) = x² - 4x + 3.

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

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

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

79. What is ∫ csc x cot x dx?

A. -csc x + C B. csc x + C C. -sec x + C D. sec x + C

80. 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|

81. What is ∫ (x² + 2x) dx from 0 to 2?

A. 20/3 B. 8 C. 10 D. 6

82. What is ∫ cos(3x) dx?

A. 1/3 sin(3x) + C B. sin(3x) + C C. -1/3 sin(3x) + C D. 3 sin(3x) + C

83. What is ∫ (x+1) dx?

A. x²/2 + x + C B. x²/2 + C C. x + C D. x²/2 + x

84. What is ∫ (4x³ - 2x) dx?

A. x⁴ - x² + C B. x⁴ - 2x² + C C. 4x⁴ - x² + C D. x⁴ - x²

85. What is ∫ (1/(x²+1)) dx?

A. arctan x + C B. arcsin x + C C. arccos x + C D. ln(x²+1) + C

86. What is the complement of set A={1,2} if universal set U={1,2,3,4}?

A. {3,4} B. {1,2} C. {1,2,3,4} D. ∅

87. What is the LCM of 4 and 6?

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

88. What is the binary equivalent of decimal 10?

A. 1010 B. 1011 C. 1100 D. 1001

89. Which of the following is a rational number between 0 and 1?

A. 1/2 B. √1/2 C. π/4 D. 0.5

90. What is the sum of the first 4 terms of sequence 1,3,5,7?

A. 16 B. 15 C. 14 D. 17

91. What is the sum of the first 10 terms of 1+2+3+...+10?

A. 55 B. 50 C. 60 D. 45

92. If P(A)=0.2, P(B)=0.5, and A and B are independent, what is P(A∩B)?

A. 0.1 B. 0.7 C. 0.3 D. 0.5

93. What is the median of 1, 2, 3, 4, 5, 6?

A. 3.5 B. 3 C. 4 D. 2.5

94. What is the variance of the data 2, 3, 4, 5?

A. 1.25 B. 2 C. 1.5 D. 0.5

95. If P(A)=0.6, P(B)=0.3, and P(A∩B)=0.1, then P(A∪B)=?

A. 0.8 B. 0.9 C. 0.7 D. 0.5

96. What is the value of cot 45°?

A. 1 B. 0 C. ∞ D. 1/2

97. What is the range of tan x?

A. All real numbers B. [-1,1] C. [0,∞) D. (-1,1)

98. What is the value of cos(π)?

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

99. If A = (3,4), what is 2A?

A. (6,8) B. (6,8) C. (9,12) D. (3,4)

100. 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

Physics 30 MCQs

101. The electric field inside a charged conductor in electrostatic equilibrium is:

A. Zero B. Maximum C. Constant D. Non-zero

102. A capacitor of capacitance C is charged to potential V. The charge on it is:

A. Q = CV B. Q = V/C C. Q = C/V D. Q = CV²

103. The value of g is maximum at:

A. Poles B. Equator C. Centre of Earth D. At a height of 100 km

104. The force of gravity between two objects is attractive and follows:

A. Inverse-square law B. Direct-square law C. Inverse law D. No dependence on distance

105. The gravitational field due to a point mass m at distance r is:

A. g = Gm/r² B. g = Gm/r C. g = G/r² D. g = Gm/r

106. Kepler's first law states that planets move in:

A. Elliptical orbits with the Sun at one focus B. Circular orbits C. Parabolic orbits D. Hyperbolic orbits

107. The internal energy of an ideal gas depends only on:

A. Temperature B. Pressure C. Volume D. All of them

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

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

109. Which of the following is a scalar quantity?

A. Speed B. Velocity C. Displacement D. Force

110. Time dilation means that a moving clock runs:

A. Slower B. Faster C. At the same rate D. Irregularly

111. The rest energy of an object of mass 1 kg is approximately:

A. 9 × 10¹⁶ J B. 3 × 10⁸ J C. 9 × 10¹⁶ eV D. 3 × 10¹⁶ J

112. The Compton effect demonstrates that light behaves as:

A. Particles (photons) B. Waves C. Both waves and particles D. Neither

113. According to Planck's law, the energy of an oscillator is quantized as:

A. E = nhf B. E = hf C. E = mc² D. E = kT

114. 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

115. The law of reflection states that the angle of incidence is equal to the angle of:

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

116. The phenomenon of bending of light around obstacles is called:

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

117. The lens formula is:

A. 1/f = 1/v - 1/u B. 1/f = 1/v + 1/u C. 1/f = 1/u - 1/v D. 1/v = 1/f + 1/u

118. The power of a lens is given by:

A. P = 1/f (in meters) B. P = f C. P = 1/f (in cm) D. P = 2/f

119. The SI unit of power of a lens is:

A. Dioptre B. Meter C. Watt D. Joule

120. Optical fibers work on the principle of:

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

121. The number of revolutions per unit time is called:

A. Frequency (f) B. Period (T) C. Angular velocity D. Speed

122. The moment of inertia of a hoop (thin ring) about its central axis is:

A. m R² B. ½ m R² C. 2/5 m R² D. ⅔ m R²

123. The distance between two successive crests is called:

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

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

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

125. The wave speed v is related to frequency f and wavelength λ by:

A. v = f λ B. v = f/λ C. v = λ/f D. v = f + λ

126. The fundamental frequency of a pipe closed at one end is given by:

A. f = v/(4L) B. f = v/(2L) C. f = 2v/L D. f = v/L

127. The efficiency of a machine is defined as:

A. Useful output / input × 100% B. Input / output × 100% C. Output power / input power D. Both A and C

128. A 60 W bulb consumes energy at the rate of 60 J per second. In 10 minutes, it consumes:

A. 36000 J B. 600 J C. 60 J D. 3600 J

129. If the radius of a conductor is doubled, and the current remains the same, what happens to the drift velocity of electrons?

A. One-half B. One-fourth C. Four times D. Two times

130. 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

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