ECAT (Practice Test) FLP 5 Free Quiz

Chemis

Comput

Englis

Maths

Physic

ECAT (Practice Test) – FLP 5 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 proton was discovered by:

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

2. The ionization energy of hydrogen is:

A. 13.6 eV B. 10.2 eV C. 3.4 eV D. 1.51 eV

3. 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

4. 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

5. The number of unpaired electrons in nitrogen atom is:

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

6. The element with atomic number 29 is copper. Its electron configuration is (excluding exceptions):

A. [Ar] 3d¹⁰ 4s¹ B. [Ar] 3d⁹ 4s² C. [Ar] 3d¹⁰ 4s² D. [Ar] 3d⁸ 4s¹

7. The Lyman series of hydrogen lies in the:

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

8. The total number of orbitals in a shell with n=4 is:

A. 16 B. 4 C. 8 D. 32

9. The hydrogen bond is responsible for the anomalous properties of:

A. Water B. Methane C. Hydrogen sulfide D. Hydrogen chloride

10. The hybridisation of boron in BF₃ is:

A. sp² B. sp³ C. sp D. sp³d

11. 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

12. At equilibrium, the concentrations of reactants and products are:

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

13. The equilibrium constant is temperature dependent. For an exothermic reaction, increasing temperature will:

A. Decrease K B. Increase K C. No change D. Increase or decrease depending on pressure

14. 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

15. If Q > K, the reaction will proceed:

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

16. The Henderson-Hasselbalch equation for a buffer is:

A. pH = pKa + log([salt]/[acid]) B. pH = pKa - log([salt]/[acid]) C. pH = pKa + log([acid]/[salt]) D. pH = pKa - log([acid]/[salt])

17. The acid dissociation constant Ka is a measure of:

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

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

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

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 0.1 M acetic acid (Ka=1.8×10⁻⁵) is approximately:

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

21. 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

22. 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

23. A buffer solution is most resistant to pH change when the ratio of salt to acid is close to:

A. 1 B. 0.1 C. 10 D. 0

24. 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

25. 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

26. The Faraday constant (F) is the charge on one mole of electrons. Its value is:

A. 96500 C/mol B. 96485 C/mol C. Both A and B D. 96500 J/V

27. 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

28. The oxidation number of oxygen in most compounds is:

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

29. In electrolysis of molten NaCl, the products are:

A. Na and Cl₂ B. H₂ and Cl₂ C. NaOH and Cl₂ D. Na and H₂

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

A. Cl₂ B. O₂ C. H₂ D. Na

Computer Science 30 MCQs

31. Columns in a database table are called:

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

32. Which of the following is NOT a type of database?

A. Spreadsheet B. Relational C. NoSQL D. Object-oriented

33. A join operation in SQL is used to:

A. Combine data from multiple tables B. Delete data C. Insert data D. Update data

34. A megabyte (MB) is approximately:

A. 1024 KB B. 1024 bytes C. 1024 GB D. 1000 bytes

35. An operating system is an example of:

A. System software B. Application software C. Firmware D. Hardware

36. The Control Unit (CU) is responsible for:

A. Directing the operation of the processor B. Performing arithmetic operations C. Storing data D. Displaying output

37. Information is defined as:

A. Processed, meaningful data B. Raw facts C. A computer language D. A type of memory

38. Which layer of the OSI model provides error detection and correction?

A. Data link layer B. Physical layer C. Session layer D. Presentation layer

39. In a star topology, devices are connected to:

A. A central hub or switch B. A single cable C. A ring D. Another device

40. A table is in 2NF if:

A. It is in 1NF and has no partial dependencies B. It is in 1NF only C. It has no transitive dependencies D. It has a single-attribute key

41. A table is in 3NF if:

A. It is in 2NF and has no transitive dependencies B. It is in 2NF only C. It has no repeating groups D. It has a composite key

42. A foreign key constraint ensures:

A. Referential integrity B. Unique values C. Null values not allowed D. Data type consistency

43. The relational model was proposed by:

A. E.F. Codd B. Charles Bachman C. Peter Chen D. Ted Nelson

44. A NOR gate is equivalent to:

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

45. A register is:

A. A group of flip-flops used for temporary storage B. A logic gate C. An arithmetic unit D. A decoder

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

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

47. In C, a string is terminated by:

A. Null character ('\0') B. Newline C. Space D. Tab

48. Which function writes a string to a file?

A. fputs() B. fputc() C. fprintf() D. fwrite()

49. What is a parameter in a function?

A. A variable that receives a value from the caller B. The return value C. The function name D. The function body

50. An argument is:

A. The actual value passed to a function B. The parameter definition C. The function name D. The return type

51. FTP stands for:

A. File Transfer Protocol B. Fast Transfer Protocol C. File Transmission Protocol D. Fixed Transfer Protocol

52. Which of these is a valid C statement?

A. int a = 10; B. int a = 10 C. a = 10; D. All of the above

53. Which device is used to read barcodes?

A. Barcode reader B. Scanner C. Printer D. Monitor

54. Which generation of computers used vacuum tubes?

A. First generation B. Second generation C. Third generation D. Fourth generation

55. Which of these is an infinite loop in C?

A. while(1) { } B. for(;;) { } C. while(true) { } D. All of the above

56. Which loop is best when the number of iterations is known?

A. for loop B. while loop C. do-while D. All are equal

57. Which of these is a pointing device?

A. Mouse B. Keyboard C. Scanner D. Printer

58. 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

59. Which alignment makes text straight on both left and right margins?

A. Justify B. Left align C. Right align D. Center

60. Which feature is used to combine two or more documents into one?

A. Merge B. Combine C. Join D. Insert

English 10 MCQs

61. What can lack of water cause?

A. Fatigue and headaches B. Increased energy C. Better memory D. Weight gain

62. What is a benefit of online learning mentioned?

A. Flexibility and pace B. No need for internet C. Less time D. No self-discipline needed

63. What is a solution mentioned to reduce plastic pollution?

A. Recycling B. Burning plastic C. Dumping in rivers D. Using more plastic

64. What is needed to maintain friendships?

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

65. What does "maintaining" mean?

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

66. 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

67. Which word is closest in meaning to "sustainable"?

A. Maintainable B. Wasteful C. Short-lived D. Expensive

68. What is the author's attitude?

A. Optimistic and encouraging B. Skeptical C. Critical D. Neutral

69. What does "ripple effect" mean?

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

70. What does "well-being" mean?

A. Good health and happiness B. Illness C. Stress D. Pain

Maths 30 MCQs

71. What is the value of 3x + 5 if x = 2?

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

72. What is the value of sin²θ + cos²θ?

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

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

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

74. What is the square root of 144?

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

75. What is the center of the circle x² + y² = 25?

A. (0,0) B. (5,0) C. (0,5) D. (5,5)

76. What is the area of the circle with equation x² + y² = 100?

A. 100π B. 10π C. 20π D. 50π

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

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

78. What is the derivative of f(x) = (2x+1)^3 using chain rule?

A. 6(2x+1)² B. 3(2x+1)² C. 2(2x+1)² D. 6(2x+1)³

79. Find the derivative of f(x) = √(x) + 3x. at x=1?

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

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

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

81. What is ∫ 1/x dx?

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

82. What is ∫ cos x dx?

A. sin x + C B. -sin x + C C. cos x + C D. -cos x + C

83. 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|

84. What is ∫ (5x⁴) dx?

A. x⁵ + C B. 5x⁵/5 + C = x⁵ + C C. 20x³ + C D. 5x⁵ + C

85. Evaluate ∫₀¹ (3x² + 2x) dx.

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

86. What is the cardinality of A={x | x is a vowel in the English alphabet}?

A. 5 B. 26 C. 21 D. 10

87. What is the value of i⁴?

A. 1 B. -1 C. i D. -i

88. What is the sum of odd numbers from 1 to 99?

A. 2500 B. 4900 C. 2500 D. 5000

89. 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

90. What is the sum of 1 + 1/2 + 1/3? (not series, just sum?)

A. 11/6 B. 2 C. 5/6 D. 3/2

91. What is the variance of 1, 2, 3, 4, 5?

A. 2 B. 2.5 C. 1 D. 1.5

92. What is the mean of the numbers 1, 2, 3, 4, 5?

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

93. What is the probability of getting exactly two heads in three tosses?

A. 3/8 B. 1/8 C. 3/4 D. 1/2

94. What is the mean of the first 5 even numbers?

A. 6 B. 5 C. 4 D. 8

95. What is the probability of drawing a spade from a deck?

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

96. What is the value of tan(π/3)?

A. √3 B. 1/√3 C. 1 D. 0

97. Which of the following is a vector quantity?

A. Velocity B. Mass C. Temperature D. Energy

98. What is the magnitude of the vector (1,2,2)?

A. 3 B. 5 C. 9 D. 1

99. What is the vector triple product?

A. A×(B×C) B. A·(B×C) C. (A·B)C D. All of the above

100. What is the angle between vectors (1,0,0) and (0,1,0)?

A. 90° B. 0° C. 45° D. 180°

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. If the cross-sectional area of a wire is doubled, its resistance becomes:

A. Half B. Double C. Four times D. One fourth

103. A galvanometer can be converted into an ammeter by connecting:

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

104. A charged particle moves in a circular path in a magnetic field because the force is:

A. Perpendicular to velocity B. Parallel to velocity C. Zero D. Opposite to velocity

105. Like charges:

A. Repel each other B. Attract each other C. No force D. Cancel each other

106. The work done in moving a charge q through a potential difference V is:

A. W = q V B. W = q / V C. W = V / q D. W = q V²

107. The value of g on the moon is about 1/6th of that on Earth. An object weighing 60 N on Earth would weigh on the moon:

A. 10 N B. 6 N C. 60 N D. 360 N

108. The change in internal energy ΔU of a system is given by:

A. ΔU = Q - W B. ΔU = Q + W C. ΔU = W - Q D. ΔU = -Q - W

109. In an isothermal process for an ideal gas, the internal energy ΔU is:

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

110. The entropy change for a reversible process is given by:

A. ΔS = Q_rev / T B. ΔS = Q / T C. ΔS = W / T D. ΔS = Q_rev × T

111. An object is in equilibrium when the net force acting on it is:

A. Zero B. Maximum C. Constant D. Changing

112. The SI unit of work is:

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

113. Power is defined as:

A. Work done per unit time B. Force per unit time C. Energy per unit distance D. Force × velocity

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

A. 0° B. 90° C. 180° D. 45°

115. Which instrument is used to measure length accurately up to 0.01 mm?

A. Micrometer screw gauge B. Vernier calipers C. Meter rule D. Measuring tape

116. The least count of a Vernier calipers is typically:

A. 0.01 cm B. 0.001 cm C. 0.1 cm D. 0.01 mm

117. Length contraction occurs along the direction of:

A. Motion B. Perpendicular to motion C. Both D. None

118. The ultraviolet catastrophe was resolved by:

A. Planck's quantum hypothesis B. Einstein's relativity C. Bohr's model D. Compton effect

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

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

120. When light travels from air to glass, its speed:

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

121. The critical angle is related to refractive index by:

A. sin C = 1/n B. sin C = n C. cos C = 1/n D. tan C = n

122. The angular acceleration α is defined as:

A. dω/dt B. dθ/dt C. ω/t D. θ/t

123. The angular displacement in radians for one complete revolution is:

A. 2π rad B. π rad C. 2 rad D. 1 rad

124. A figure skater spinning with arms outstretched pulls them in. This decreases the moment of inertia and increases:

A. Angular velocity B. Angular momentum C. Torque D. Kinetic energy

125. A wave that requires a medium to propagate is called:

A. Mechanical wave B. Electromagnetic wave C. Transverse wave D. Longitudinal wave

126. 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

127. The Doppler effect is the change in frequency due to relative motion. If the source moves towards the observer, the observed frequency:

A. Increases B. Decreases C. Remains same D. Zero

128. A Wheatstone bridge has arms P = 10Ω, Q = 20Ω, R = 30Ω, and S is unknown. What value of S makes the bridge balanced?

A. 15Ω B. 30Ω C. 60Ω D. 90Ω

129. A 3Ω and a 6Ω resistor are connected in parallel across a battery. What is the ratio of power dissipated in the 3Ω resistor to the 6Ω resistor?

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

130. A wire of resistance R is stretched to three times its original length. What is the new resistance?

A. 3R B. 6R C. 7R D. 9R

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