ECAT (Practice Test) FLP 21 Free Quiz

Chemis

Comput

Englis

Maths

Physic

ECAT (Practice Test) – FLP 21 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 plum pudding model was proposed by:

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

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 quantum number that defines the shape of an orbital is:

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

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

A. 2n² B. 2n C. n² D. n

6. The spin quantum number of an electron can have values:

A. +½ and -½ B. +1 and -1 C. 0 and 1 D. +1, 0, -1

7. The atomic number of an element is 17. Its electron configuration is:

A. 1s² 2s² 2p⁶ 3s² 3p⁵ B. 1s² 2s² 2p⁶ 3s² 3p⁶ C. 1s² 2s² 2p⁶ 3s² 3p⁴ D. 1s² 2s² 2p⁶ 3s² 3p³

8. The Balmer series of hydrogen lies in the:

A. Visible region B. UV region C. Infrared region D. Radio region

9. The azimuthal quantum number l = 2 corresponds to which subshell?

A. d B. s C. p D. f

10. The shape of CO₂ is:

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

11. The bond in graphite is:

A. Covalent and van der Waals B. Ionic C. Metallic D. Hydrogen

12. The Lewis structure of CO₂ shows:

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

13. A state in which the rate of forward reaction equals the rate of reverse reaction is called:

A. Chemical equilibrium B. Chemical kinetics C. Thermodynamic equilibrium D. Dynamic equilibrium

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

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

15. The solubility product constant Ksp is used for:

A. Sparingly soluble salts B. Strong acids C. Gases D. All reactions

16. A solution with pH > 7 is:

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

17. The relationship between Ka and Kb for a conjugate acid-base pair is:

A. Ka × Kb = Kw B. Ka / Kb = Kw C. Ka + Kb = Kw D. Ka = Kb

18. The pH of a 0.1 M acetic acid (Ka=1.8×10⁻⁵) is approximately:

A. 2.87 B. 1.87 C. 3.87 D. 4.87

19. For the reaction 2SO₂ + O₂ ⇌ 2SO₃, adding a catalyst will:

A. No shift in equilibrium B. Shift to products C. Shift to reactants D. Increase K

20. For the reaction CO(g) + H₂O(g) ⇌ CO₂(g) + H₂(g), ΔH = -41 kJ. Increasing temperature will:

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

21. For the reaction H₂ + I₂ ⇌ 2HI, Δn = 0, so:

A. Kp = Kc B. Kp > Kc C. Kp < Kc D. No relation

22. An electrochemical cell that converts chemical energy into electrical energy is called:

A. Galvanic (voltaic) cell B. Electrolytic cell C. Fuel cell D. Battery

23. In a galvanic cell, the cathode is:

A. Positive electrode B. Negative electrode C. Neutral D. Salt bridge

24. The standard reduction potential of Cu²⁺/Cu is +0.34 V. This means Cu²⁺ is reduced more:

A. Readily than H⁺ B. Less readily than H⁺ C. Equally D. Cannot determine

25. In the electrolysis of water, oxygen gas is produced at the:

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

26. The anode in a lead-acid battery is made of:

A. Lead (Pb) B. Lead dioxide (PbO₂) C. Lead sulfate (PbSO₄) D. Sulfuric acid

27. The term "oxidation" originally meant:

A. Addition of oxygen B. Loss of electrons C. Loss of hydrogen D. Gain of electrons

28. The term "reduction" originally meant:

A. Removal of oxygen B. Gain of electrons C. Loss of electrons D. Addition of hydrogen

29. In the reaction Zn + Cu²⁺ → Zn²⁺ + Cu, the oxidizing agent is:

A. Cu²⁺ B. Zn C. Zn²⁺ D. Cu

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. Which application helps in graphic design and animation?

A. Adobe Photoshop and Blender B. Microsoft Word C. Excel D. Notepad

32. Cache memory is:

A. Faster than main memory but smaller B. Slower than main memory C. Larger than main memory D. A type of hard disk

33. IPv6 addresses are how many bits?

A. 128 bits B. 32 bits C. 64 bits D. 256 bits

34. Which normal form eliminates partial dependencies?

A. Second Normal Form (2NF) B. First Normal Form (1NF) C. Third Normal Form (3NF) D. Fourth Normal Form

35. Denormalization is the process of:

A. Combining tables to improve performance B. Splitting tables C. Removing keys D. Adding redundancy

36. A check constraint is used to:

A. Validate data based on a condition B. Create primary keys C. Create foreign keys D. Index data

37. The basic logic gates include:

A. AND, OR, NOT B. ADD, SUB, MUL C. IN, OUT, LOAD D. READ, WRITE, EXECUTE

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

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

39. A half adder adds:

A. Two bits B. Three bits C. Two bytes D. One bit

40. The sizeof() operator in C returns:

A. The size in bytes of a variable or type B. The value of a variable C. The address of a variable D. The type of a variable

41. What is the purpose of the return statement?

A. To send a value back to the caller B. To end the program C. To declare a variable D. To print output

42. What is the output of this code: int x = 5; void change(int a) { a = 10; } int main() { change(x); printf("%d", x); return 0; }

A. 5 B. 10 C. Error D. 0

43. Which of the following is the correct extension for a C source file?

A. .c B. .cpp C. .java D. .py

44. What does the acronym PAN stand for?

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

45. What is the role of a compiler?

A. To translate high-level code to machine code B. To execute code C. To debug code D. To edit code

46. Which view allows you to create and modify the structure of a table?

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

47. Which of these is a valid for loop in C?

A. for(int i=0; i<10; i++) B. for(i=0; i<10; i++) C. Both A and B D. for i=0; i<10; i++

48. Which view is used to design a report in Access?

A. Design View B. Layout View C. Report View D. Both A and B

49. A form can be based on:

A. A table or a query B. Only a table C. Only a query D. Only another form

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

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

51. Speakers and headphones are examples of:

A. Output devices B. Input devices C. Storage devices D. Processing devices

52. Which peripheral is used for biometric authentication?

A. Fingerprint scanner B. Keyboard C. Monitor D. Mouse

53. What does copyright protect?

A. Original works of authorship B. Ideas and facts C. Computer hardware D. Processes

54. What is the purpose of a privacy policy?

A. To inform users how their data is collected and used B. To install software C. To manage passwords D. To protect against viruses

55. Which function returns the highest value in a range?

A. MAX B. MIN C. SUM D. AVERAGE

56. Which function is used to concatenate text strings?

A. CONCATENATE or & B. SUM C. AVERAGE D. VLOOKUP

57. What is the purpose of the PMT function?

A. To calculate the payment for a loan based on constant payments and interest rate B. To calculate sum C. To average numbers D. To count cells

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

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

59. Which feature is used to check spelling and grammar in Word?

A. Spell Check B. Thesaurus C. Grammar Check D. Both A and C

60. Which key is used to delete text to the right of the cursor?

A. Delete B. Backspace C. Ctrl + X D. Ctrl + Z

English 10 MCQs

61. What percentage of the human body is water?

A. 60% B. 40% C. 80% D. 20%

62. Where does much plastic waste end up?

A. Oceans B. Mountains C. Deserts D. Forests

63. What is harmed by plastic pollution?

A. Marine life B. Birds only C. Only fish D. Only plants

64. What does "mutual" mean?

A. Shared between two or more B. One-sided C. Unbalanced D. Selfish

65. What does "maintaining" mean?

A. Keeping in good condition B. Ending C. Ignoring D. Ruining

66. What are the negative effects of excessive use?

A. Anxiety and poor sleep B. Better focus C. Increased productivity D. Improved relationships

67. What is the author's tone?

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

68. 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

69. The tone of the passage is:

A. Advisory and informative B. Sarcastic C. Confusing D. Negative

70. What is the author's tone?

A. Educational and concerned B. Indifferent C. Sarcastic D. Humorous

Maths 30 MCQs

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

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

72. The sequence 2, 6, 10, 14,... is an arithmetic progression. What is the common difference?

A. 4 B. 2 C. 6 D. 8

73. What is the least common multiple of 4 and 6?

A. 12 B. 24 C. 2 D. 6

74. What is the square root of 144?

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

75. Find the slope of the line parallel to y = 5x - 1.

A. 5 B. -5 C. 1/5 D. -1/5

76. What is the equation of a circle with center (2,3) and radius 4?

A. (x-2)² + (y-3)² = 16 B. (x+2)² + (y+3)² = 16 C. (x-2)² + (y-3)² = 4 D. (x+2)² + (y+3)² = 4

77. Find the point of intersection of x+y=5 and x-y=1.

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

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

A. 2x + 3 B. x² + 3 C. 2x + 3x D. 2x - 3

79. What is the slope of the tangent to y = x² at x = 3?

A. 6 B. 9 C. 3 D. 12

80. What is the derivative of f(x) = 1/(x²)?

A. -2/x³ B. 2/x³ C. -2/x D. 2/x

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

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

82. What is ∫ 1/x dx?

A. ln|x| + C B. 1/x² + C C. ln x + C D. ln|x|

83. What is ∫ sin(2x) dx?

A. -1/2 cos(2x) + C B. 1/2 cos(2x) + C C. -cos(2x) + C D. cos(2x) + C

84. What is ∫ (x² - 1) dx from 0 to 2?

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

85. Find the area between y = x and y = x² from x=0 to 1.

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

86. What is ∫ (x^3 - 3x) dx?

A. x⁴/4 - 3x²/2 + C B. x⁴/4 - 3x² + C C. x⁴/4 - 3x + C D. 3x² - 3

87. The power set of A={a,b} has how many elements?

A. 4 B. 2 C. 3 D. 8

88. What is the modulus of 3+4i?

A. 5 B. 7 C. 1 D. √5

89. The number 0 belongs to which sets?

A. All of the above (integers, rationals, reals) B. Only integers C. Only rationals D. Only reals

90. Simplify: 5a - 2a

A. 3a B. 7a C. 5a D. 2a

91. What is the solution to |x-2|=5?

A. 7 and -3 B. 7 and 3 C. -7 and 3 D. 7 and -3

92. What is the sum of the first 6 terms of A.P 2,5,8,11,14,17?

A. 57 B. 51 C. 60 D. 54

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

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

94. What is the probability of drawing a king from a deck of 52 cards?

A. 1/13 B. 1/4 C. 1/52 D. 4/13

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 tan(π/4)?

A. 1 B. √3 C. 1/√3 D. 0

97. What is the direction (angle) of vector (3,4) with the positive x-axis?

A. tan⁻¹(4/3) B. tan⁻¹(3/4) C. sin⁻¹(4/5) D. cos⁻¹(3/5)

98. What is the dot product of A = (1,2) and B = (3,4)?

A. 11 B. 5 C. 10 D. 7

99. What is the projection of A=(2,3) on B=(1,0)?

A. 2 B. 3 C. √13 D. 1

100. What is the volume of a parallelepiped with edges A,B,C?

A. |A·(B×C)| B. |A×B|C C. |A||B||C| D. |A·B|C

Physics 30 MCQs

101. Drift velocity of electrons in a conductor is typically:

A. Very small (mm/s) B. Very large (close to c) C. Zero D. Infinite

102. The direction of magnetic field around a straight current-carrying wire is given by:

A. Right-hand thumb rule B. Left-hand rule C. Fleming's rule D. Lenz's law

103. Paramagnetic materials have relative permeability μ_r:

A. Slightly greater than 1 B. Slightly less than 1 C. Much greater than 1 D. Equal to 1

104. Coulomb's law states that the force between two charges is directly proportional to:

A. Product of charges B. Sum of charges C. Difference of charges D. Square of charges

105. The SI unit of electric field intensity is:

A. N/C B. V/m C. Both A and B D. N·m

106. The SI unit of electric potential is:

A. Volt B. Joule C. Coulomb D. Newton

107. The force of gravity between two masses is given by:

A. F = G m1 m2 / r² B. F = G m1 m2 / r C. F = G m1 m2 r² D. F = G (m1+m2)/r²

108. The value of g is maximum at:

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

109. The gravitational force between two masses is an example of:

A. Action at a distance B. Contact force C. Tension D. Friction

110. The gravitational field inside a uniform spherical shell is:

A. Zero B. Non-zero C. Maximum at centre D. Decreases with distance

111. The acceleration due to gravity at a height h above the Earth's surface (h << R) is:

A. g(1 - 2h/R) B. g(1 + 2h/R) C. g(1 - h/R) D. g(1 + h/R)

112. In an isothermal process, the temperature of the system remains:

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

113. For a monoatomic ideal gas, C_v = 3/2 R. The value of γ = C_p/C_v is:

A. 5/3 B. 3/5 C. 7/5 D. 4/3

114. The maximum static friction is given by:

A. f_s,max = μ_s N B. f_s = μ_k N C. f_s = N / μ_s D. f_s = μ_s / N

115. The work done by a centripetal force is:

A. Zero B. Positive C. Negative D. Maximum

116. The magnitude of the resultant of two vectors is maximum when the angle between them is:

A. 0° B. 90° C. 180° D. 45°

117. The cross product of two parallel vectors is:

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

118. Planck's constant has the value:

A. 6.63 × 10⁻³⁴ Js B. 6.63 × 10⁻³⁴ eV s C. 6.63 × 10⁻³⁴ J/Hz D. All of the above

119. 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

120. 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

121. The angular displacement is measured in:

A. Radians B. Degrees C. Revolutions D. All of the above

122. If no external torque acts on a system, its angular momentum remains:

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

123. For a hoop rolling down an incline, the acceleration is:

A. a = ½ g sinθ B. a = g sinθ C. a = 2/3 g sinθ D. a = 1/3 g sinθ

124. The work done by a torque in rotating an object through an angle dθ is:

A. dW = τ dθ B. dW = F ds C. dW = τ θ D. dW = τ/θ

125. In a transverse wave, the particle displacement is:

A. Perpendicular to the direction of propagation B. Parallel to the direction C. At 45° D. Circular

126. If a force F moves an object with velocity v, the instantaneous power is:

A. P = F · v B. P = F v C. P = F/v D. P = F v²

127. A spring of spring constant 200 N/m is compressed by 0.1 m. The potential energy stored is:

A. 1 J B. 2 J C. 10 J D. 0.5 J

128. The unit of power in SI is watt. 1 watt is equal to:

A. 1 J/s B. 1 J·s C. 1 N·m/s D. Both A and C

129. The height from which a body must be dropped to achieve a speed v is:

A. v²/(2g) B. v/(2g) C. 2v²/g D. v²/g

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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