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SSC MTS 2026 Full Mock Test 4

Attempt a separate 90-question validated paper with two locked 45-minute sessions, current scoring and explanation review.

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SSC MTS 2026

SSC MTS 2026 Full Mock Test 4

A validated 90-question MTS simulation. Session I has Numerical Ability and Reasoning with no negative marking; Session II has General Awareness and English with a one-mark penalty for each wrong answer.

Questions
90
Duration
45 min / section
Marking
+3; no penalty in I, -1 in II (Max 270)
Sections
Session I: 40 | Session II: 50

Question Palette Legend

1Not Visited1Not Answered1Answered1Marked for Review1Answered + Marked
Preview all 90 questions in SSC MTS 2026 Full Mock Test 4 (no login required)
  1. Session I — Numerical Ability and Reasoning — Basic Percentage

    1. 18% of 250 is:

    • A. 35
    • B. 40
    • C. 45 (Correct)
    • D. 50

    Explanation: 18/100 x 250 = 45.

  2. Session I — Numerical Ability and Reasoning — Percentage Increase

    2. A value increases from 80 to 100. The increase percent is:

    • A. 20%
    • B. 25% (Correct)
    • C. 30%
    • D. 40%

    Explanation: Increase is 20 on base 80, so 20/80 x 100 = 25%.

  3. Session I — Numerical Ability and Reasoning — Percentage Decrease

    3. A number drops from 500 to 425. Decrease percent is:

    • A. 10%
    • B. 12%
    • C. 15% (Correct)
    • D. 18%

    Explanation: Decrease is 75 on base 500, so 15%.

  4. Session I — Numerical Ability and Reasoning — Marks

    4. A student gets 168 marks out of 240. Percentage is:

    • A. 65%
    • B. 68%
    • C. 70% (Correct)
    • D. 72%

    Explanation: 168/240 x 100 = 70%.

  5. Session I — Numerical Ability and Reasoning — Expenditure

    5. If a person spends 72% of income, savings percent is:

    • A. 18%
    • B. 22%
    • C. 24%
    • D. 28% (Correct)

    Explanation: Savings percent = 100% - 72% = 28%.

  6. Session I — Numerical Ability and Reasoning — Population

    6. Population of a town rises by 12% from 25000. New population is:

    • A. 27600
    • B. 27800
    • C. 28000 (Correct)
    • D. 28500

    Explanation: Increase = 12% of 25000 = 3000, so new population = 28000.

  7. Session I — Numerical Ability and Reasoning — Reverse Percentage

    7. After a 20% rise, a salary becomes Rs. 36000. Original salary was:

    • A. 28000
    • B. 30000 (Correct)
    • C. 32000
    • D. 34000

    Explanation: Original x 1.2 = 36000, so original = 30000.

  8. Session I — Numerical Ability and Reasoning — Successive Change

    8. A number is first increased by 25% and then decreased by 20%. Net effect is:

    • A. No change (Correct)
    • B. 5% increase
    • C. 5% decrease
    • D. 10% increase

    Explanation: 1.25 x 0.8 = 1, so there is no net change.

  9. Session I — Numerical Ability and Reasoning — Pass Percentage

    9. Passing marks are 35% of 400. A student scores 152. He passes by:

    • A. 8
    • B. 10
    • C. 12 (Correct)
    • D. 14

    Explanation: Passing marks are 140, so the student passes by 12 marks.

  10. Session I — Numerical Ability and Reasoning — Profit Percentage

    10. An article bought for Rs. 800 is sold for Rs. 920. Profit percent is:

    • A. 12%
    • B. 15% (Correct)
    • C. 18%
    • D. 20%

    Explanation: Profit = 120 on cost price 800, so 15%.

  11. Session I — Numerical Ability and Reasoning — Discount Percentage

    11. Marked price is Rs. 1500 and selling price is Rs. 1275. Discount percent is:

    • A. 10%
    • B. 12%
    • C. 15% (Correct)
    • D. 18%

    Explanation: Discount = 225, so 225/1500 x 100 = 15%.

  12. Session I — Numerical Ability and Reasoning — Basic Percentage

    12. 45% of 200 is:

    • A. 80
    • B. 85
    • C. 90 (Correct)
    • D. 95

    Explanation: 45/100 x 200 = 90.

  13. Session I — Numerical Ability and Reasoning — Result Analysis

    13. In a class of 80 students, 60% are girls. Number of boys is:

    • A. 24
    • B. 28
    • C. 30
    • D. 32 (Correct)

    Explanation: Girls = 48, so boys = 32.

  14. Session I — Numerical Ability and Reasoning — Reverse Percentage

    14. A quantity becomes 96 after falling by 20%. Its original value was:

    • A. 110
    • B. 115
    • C. 120 (Correct)
    • D. 125

    Explanation: Original x 0.8 = 96, so original = 120.

  15. Session I — Numerical Ability and Reasoning — Basic Percentage

    15. 35% of 200 is:

    • A. 60
    • B. 65
    • C. 70 (Correct)
    • D. 75

    Explanation: 35/100 x 200 = 70.

  16. Session I — Numerical Ability and Reasoning — Increase

    16. A value increases from 400 to 440. Increase percent is:

    • A. 5%
    • B. 8%
    • C. 10% (Correct)
    • D. 12%

    Explanation: Increase is 40 on base 400.

  17. Session I — Numerical Ability and Reasoning — Decrease

    17. A price falls from 500 to 450. Decrease percent is:

    • A. 8%
    • B. 10% (Correct)
    • C. 12%
    • D. 15%

    Explanation: Decrease is 50 on base 500.

  18. Session I — Numerical Ability and Reasoning — Marks

    18. A student gets 315 out of 420. Percentage marks are:

    • A. 70%
    • B. 75% (Correct)
    • C. 80%
    • D. 85%

    Explanation: 315/420 x 100 = 75%.

  19. Session I — Numerical Ability and Reasoning — Population

    19. Population rises from 8000 to 8800. Increase percent is:

    • A. 8%
    • B. 10% (Correct)
    • C. 12%
    • D. 15%

    Explanation: Increase is 800 on 8000.

  20. Session I — Numerical Ability and Reasoning — Expenditure

    20. If income is 3000 and expenditure is 2400, expenditure percent of income is:

    • A. 70%
    • B. 75%
    • C. 80% (Correct)
    • D. 85%

    Explanation: 2400/3000 x 100 = 80%.

  21. Session I — Numerical Ability and Reasoning — Venn Diagram

    21. Which Venn relation best represents Doctors, Engineers and Professionals?

    • A. Doctors and Engineers inside Professionals (Correct)
    • B. All separate
    • C. Professionals inside Doctors
    • D. Doctors inside Engineers

    Explanation: Doctors and engineers are different groups, but both are professionals.

  22. Session I — Numerical Ability and Reasoning — Venn Diagram

    22. Which relation represents Mango, Fruit and Vegetable?

    • A. Mango inside Fruit, Vegetable separate (Correct)
    • B. Fruit inside Mango
    • C. All same
    • D. Mango inside Vegetable

    Explanation: Mango is a fruit and not a vegetable.

  23. Session I — Numerical Ability and Reasoning — Venn Diagram

    23. Which relation represents Women, Mothers and Teachers?

    • A. Mothers inside Women; Teachers may overlap Women (Correct)
    • B. All separate
    • C. Teachers inside Mothers
    • D. Women inside Mothers

    Explanation: All mothers are women, while teachers can be men or women.

  24. Session I — Numerical Ability and Reasoning — Venn Diagram

    24. Students, Boys and Girls are represented as:

    • A. Boys and Girls as separate parts inside Students (Correct)
    • B. Students inside Boys
    • C. All separate
    • D. Boys inside Girls

    Explanation: Boys and girls are two groups within students.

  25. Session I — Numerical Ability and Reasoning — Venn Diagram

    25. Which relation represents Square, Rectangle and Triangle?

    • A. Square inside Rectangle; Triangle separate (Correct)
    • B. Rectangle inside Square
    • C. All same
    • D. Triangle inside Rectangle

    Explanation: Every square is a rectangle, while a triangle is a separate figure.

  26. Session I — Numerical Ability and Reasoning — Venn Diagram

    26. Which relation represents India, Delhi and Asia?

    • A. Delhi inside India inside Asia (Correct)
    • B. India inside Delhi
    • C. Asia inside India
    • D. All separate

    Explanation: Delhi is in India, and India is in Asia.

  27. Session I — Numerical Ability and Reasoning — Venn Diagram

    27. Which relation represents Books, Novels and Tables?

    • A. Novels inside Books; Tables separate (Correct)
    • B. Books inside Novels
    • C. Tables inside Books
    • D. All same

    Explanation: Novels are books; tables are furniture.

  28. Session I — Numerical Ability and Reasoning — Venn Diagram

    28. In a group, 40 like tea, 30 like coffee and 10 like both. How many like at least one of the two?

    • A. 50
    • B. 60 (Correct)
    • C. 70
    • D. 80

    Explanation: At least one = 40 + 30 - 10 = 60.

  29. Session I — Numerical Ability and Reasoning — Venn Diagram

    29. Which relation represents Birds, Sparrows and Crows?

    • A. Sparrows and Crows inside Birds (Correct)
    • B. Birds inside Sparrows
    • C. All separate
    • D. Sparrows inside Crows

    Explanation: Sparrows and crows are different types of birds.

  30. Session I — Numerical Ability and Reasoning — Venn Diagram

    30. In a class, 25 play cricket, 18 play football and 7 play both. How many play exactly one game?

    • A. 29 (Correct)
    • B. 31
    • C. 33
    • D. 36

    Explanation: Exactly one = (25 - 7) + (18 - 7) = 29.

  31. Session I — Numerical Ability and Reasoning — Venn Diagram

    31. Which relation best represents Gold, Metal and Wood?

    • A. Gold inside Metal; Wood separate (Correct)
    • B. Metal inside Gold
    • C. Wood inside Metal
    • D. All same

    Explanation: Gold is a metal, while wood is separate.

  32. Session I — Numerical Ability and Reasoning — Venn Diagram

    32. Which relation represents Teachers, Female Teachers and Males?

    • A. Female Teachers inside Teachers; Males may overlap Teachers (Correct)
    • B. All separate
    • C. Teachers inside Female Teachers
    • D. Males inside Female Teachers

    Explanation: All female teachers are teachers; male persons can also be teachers.

  33. Session I — Numerical Ability and Reasoning — Venn Diagram

    33. In a survey, 32 read Hindi, 28 read English and 12 read both. How many read exactly one language?

    • A. 32
    • B. 36 (Correct)
    • C. 40
    • D. 48

    Explanation: Exactly one = (32 - 12) + (28 - 12) = 36.

  34. Session I — Numerical Ability and Reasoning — Venn Diagram

    34. Which relation represents Animals, Dogs and Cats?

    • A. Dogs and Cats inside Animals (Correct)
    • B. Animals inside Dogs
    • C. Cats inside Dogs
    • D. All separate

    Explanation: Dogs and cats are different groups inside animals.

  35. Session I — Numerical Ability and Reasoning — Venn Diagram

    35. In a class, 20 like maths, 22 like science and 8 like both. If 6 like neither, total students are:

    • A. 34
    • B. 38
    • C. 40 (Correct)
    • D. 42

    Explanation: At least one = 20 + 22 - 8 = 34. Including 6 neither gives total = 40.

  36. Session I — Numerical Ability and Reasoning — Dice

    36. In a standard dice, which number is opposite to 1?

    • A. 2
    • B. 3
    • C. 5
    • D. 6 (Correct)

    Explanation: In a standard dice, opposite faces add to 7.

  37. Session I — Numerical Ability and Reasoning — Dice

    37. In a standard dice, which number is opposite to 3?

    • A. 1
    • B. 2
    • C. 4 (Correct)
    • D. 6

    Explanation: Opposite faces add to 7, so 3 is opposite 4.

  38. Session I — Numerical Ability and Reasoning — Cube

    38. A cube has 6 faces, 12 edges and how many vertices?

    • A. 6
    • B. 8 (Correct)
    • C. 10
    • D. 12

    Explanation: A cube has 8 vertices.

  39. Session I — Numerical Ability and Reasoning — Cube

    39. A cube is painted on all faces and cut into 27 equal small cubes. How many small cubes have three painted faces?

    • A. 4
    • B. 6
    • C. 8 (Correct)
    • D. 12

    Explanation: Only corner cubes have three painted faces, and a cube has 8 corners.

  40. Session I — Numerical Ability and Reasoning — Cube

    40. A cube painted on all faces is cut into 64 equal cubes. How many small cubes have no painted face?

    • A. 4
    • B. 6
    • C. 8 (Correct)
    • D. 12

    Explanation: For 4 x 4 x 4 cutting, inner unpainted cubes = (4-2)^3 = 8.

  41. Session II — General Awareness and English — Error Spotting

    41. Identify the error: The list of items are on the table.

    • A. The list
    • B. of items
    • C. are (Correct)
    • D. on the table

    Explanation: 'List' is singular, so 'is' is correct.

  42. Session II — General Awareness and English — Conjunction

    42. He stayed at home _____ he was unwell.

    • A. because (Correct)
    • B. unless
    • C. although
    • D. till

    Explanation: 'Because' correctly gives the reason.

  43. Session II — General Awareness and English — Modal

    43. You _____ wear a helmet while riding.

    • A. should (Correct)
    • B. might
    • C. used to
    • D. can be

    Explanation: 'Should' expresses advice or obligation.

  44. Session II — General Awareness and English — Question Tag

    44. He can solve it, _____?

    • A. can't he (Correct)
    • B. can he
    • C. doesn't he
    • D. isn't he

    Explanation: The positive statement takes a negative tag.

  45. Session II — General Awareness and English — Conditional

    45. If I had more time, I _____ another chapter.

    • A. read
    • B. would read (Correct)
    • C. will read
    • D. would have read

    Explanation: This is a second conditional structure.

  46. Session II — General Awareness and English — Verb Form

    46. She avoided _____ late.

    • A. to arrive
    • B. arrive
    • C. arriving (Correct)
    • D. arrived

    Explanation: 'Avoid' is followed by a gerund.

  47. Session II — General Awareness and English — Pronoun

    47. Each candidate must bring _____ admit card.

    • A. their
    • B. his or her (Correct)
    • C. our
    • D. its

    Explanation: Formal singular agreement with 'each' takes 'his or her'.

  48. Session II — General Awareness and English — Adverb

    48. He answered the question _____.

    • A. correct
    • B. correctly (Correct)
    • C. more correct
    • D. correction

    Explanation: An adverb is needed to modify the verb.

  49. Session II — General Awareness and English — Articles

    49. Choose the correct article: It was _____ unusual experience.

    • A. a
    • B. an (Correct)
    • C. the
    • D. no article

    Explanation: Unusual begins with a vowel sound, so 'an' is correct.

  50. Session II — General Awareness and English — Agreement

    50. Neither the principal nor the teachers _____ present.

    • A. is
    • B. was
    • C. are (Correct)
    • D. has

    Explanation: With 'neither...nor', the verb agrees with the nearer subject 'teachers'.

  51. Session II — General Awareness and English — Voice

    51. Choose the passive form: They have completed the form.

    • A. The form has completed.
    • B. The form has been completed. (Correct)
    • C. The form was completed.
    • D. The form is completed.

    Explanation: Present perfect passive uses has/have been plus past participle.

  52. Session II — General Awareness and English — Preposition

    52. He has been waiting here _____ 9 o'clock.

    • A. for
    • B. since (Correct)
    • C. from
    • D. by

    Explanation: 'Since' is used with a point of time.

  53. Session II — General Awareness and English — Conditional

    53. If I were rich, I _____ a library.

    • A. build
    • B. built
    • C. would build (Correct)
    • D. will build

    Explanation: Second conditional uses 'would' with the base verb.

  54. Session II — General Awareness and English — Error Spotting

    54. Identify the incorrect part: The list of selected candidates / have been uploaded / on the official website / no error.

    • A. The list of selected candidates
    • B. have been uploaded (Correct)
    • C. on the official website
    • D. no error

    Explanation: The main subject is singular: 'list'. The correct verb is 'has been uploaded'.

  55. Session II — General Awareness and English — Sentence Improvement

    55. Choose the best replacement: The officer asked me where did I live.

    • A. where I lived (Correct)
    • B. where do I live
    • C. where I live?
    • D. no improvement

    Explanation: In indirect questions, the word order is subject + verb, and the tense shifts with the past reporting verb.

  56. Session II — General Awareness and English — Cloze Grammar

    56. Choose the best word: The report was rejected because it was not _____ with the prescribed format.

    • A. complied
    • B. consistent (Correct)
    • C. insisting
    • D. dependent

    Explanation: 'Consistent with' means in agreement with a standard or format.

  57. Session II — General Awareness and English — Voice

    57. Choose the active form: The files must be verified before noon.

    • A. Someone must verify the files before noon. (Correct)
    • B. The files must verify someone before noon.
    • C. Someone verified the files before noon.
    • D. The files are verifying before noon.

    Explanation: Modal passive 'must be verified' changes to active 'must verify'.

  58. Session II — General Awareness and English — Narration

    58. Choose the indirect form: He said, 'Let us review the answer key again.'

    • A. He suggested that they should review the answer key again. (Correct)
    • B. He said that they review the answer key again.
    • C. He requested that they reviewed the answer key again.
    • D. He ordered they review the answer key again.

    Explanation: 'Let us' used as a proposal is commonly reported with 'suggested that ... should'.

  59. Session II — General Awareness and English — Articles

    59. Choose the correct article: He waited for _____ hour before the gate opened.

    • A. a
    • B. an (Correct)
    • C. the
    • D. no article

    Explanation: Hour begins with a vowel sound, so 'an' is correct.

  60. Session II — General Awareness and English — Agreement

    60. The bouquet of roses _____ on the table.

    • A. are
    • B. were
    • C. is (Correct)
    • D. have

    Explanation: The main subject is 'bouquet', which is singular.

  61. Session II — General Awareness and English — Tense

    61. By the time we reached, the guests _____ dinner.

    • A. finish
    • B. finished
    • C. had finished (Correct)
    • D. have finished

    Explanation: Past perfect is used for the earlier of two past actions.

  62. Session II — General Awareness and English — Voice

    62. Choose the passive form: The team has completed the survey.

    • A. The survey has completed.
    • B. The survey has been completed. (Correct)
    • C. The survey had completed.
    • D. The survey is being completed.

    Explanation: Present perfect passive uses has/have been plus past participle.

  63. Session II — General Awareness and English — Error Spotting

    63. Identify the error: Neither the players nor the coach have arrived.

    • A. Neither
    • B. the players
    • C. have arrived (Correct)
    • D. no error

    Explanation: The verb agrees with the nearer subject 'coach', so 'has arrived' is correct.

  64. Session II — General Awareness and English — Conjunction

    64. He missed the bus _____ he woke up late.

    • A. because (Correct)
    • B. although
    • C. unless
    • D. whereas

    Explanation: 'Because' correctly shows reason.

  65. Session II — General Awareness and English — Sentence Improvement

    65. Choose the best replacement: She is married with a doctor.

    • A. married to a doctor (Correct)
    • B. married by a doctor
    • C. married for a doctor
    • D. no improvement

    Explanation: The correct phrase is 'married to'.

  66. Session II — General Awareness and English — Polity

    66. The Chief Election Commissioner belongs to which body?

    • A. UPSC
    • B. Election Commission of India (Correct)
    • C. Finance Commission
    • D. NITI Aayog

    Explanation: The CEC heads the Election Commission of India.

  67. Session II — General Awareness and English — Economy

    67. SEBI regulates the:

    • A. bank branches
    • B. stock market (Correct)
    • C. railways
    • D. agriculture census

    Explanation: SEBI regulates India's securities market.

  68. Session II — General Awareness and English — Polity

    68. The Vice-President of India is the ex-officio Chairman of:

    • A. Lok Sabha
    • B. Rajya Sabha (Correct)
    • C. Supreme Court
    • D. NITI Aayog

    Explanation: The Vice-President serves as Chairman of Rajya Sabha.

  69. Session II — General Awareness and English — Economy

    69. The tax collected on goods and services is commonly known as:

    • A. GST (Correct)
    • B. FDI
    • C. GDP
    • D. MSP

    Explanation: GST is the Goods and Services Tax.

  70. Session II — General Awareness and English — Polity

    70. The Directive Principles of State Policy are contained in:

    • A. Part III
    • B. Part IV (Correct)
    • C. Part V
    • D. Part VI

    Explanation: Directive Principles are in Part IV of the Constitution.

  71. Session II — General Awareness and English — Economy

    71. Repo rate is associated with:

    • A. Reserve Bank of India (Correct)
    • B. Election Commission
    • C. CAG
    • D. Planning Commission

    Explanation: Repo rate is a monetary policy rate set by RBI.

  72. Session II — General Awareness and English — Polity

    72. India is described in the Constitution as a:

    • A. Unitary state only
    • B. Union of States (Correct)
    • C. Federation by treaty
    • D. Kingdom

    Explanation: Article 1 describes India as a Union of States.

  73. Session II — General Awareness and English — Economy

    73. Deflation refers to:

    • A. rise in prices
    • B. fall in general price level (Correct)
    • C. rise in tax only
    • D. shortage of money only

    Explanation: Deflation is the opposite of inflation.

  74. Session II — General Awareness and English — Polity

    74. The Supreme Court of India is located in:

    • A. Mumbai
    • B. New Delhi (Correct)
    • C. Chennai
    • D. Kolkata

    Explanation: The Supreme Court is in New Delhi.

  75. Session II — General Awareness and English — Economy

    75. FDI stands for:

    • A. Foreign Direct Investment (Correct)
    • B. Federal Domestic Income
    • C. Free Duty Import
    • D. Financial Development Index

    Explanation: FDI means Foreign Direct Investment.

  76. Session II — General Awareness and English — Polity

    76. The term of the President of India is:

    • A. 4 years
    • B. 5 years (Correct)
    • C. 6 years
    • D. 7 years

    Explanation: The President's term is five years.

  77. Session II — General Awareness and English — Economy

    77. A subsidy generally means:

    • A. government financial support (Correct)
    • B. bank penalty
    • C. new tax
    • D. private donation only

    Explanation: A subsidy is financial assistance provided by the government.

  78. Session II — General Awareness and English — Polity

    78. The head of the Union Council of Ministers is the:

    • A. President
    • B. Prime Minister (Correct)
    • C. Chief Justice
    • D. Governor

    Explanation: The Prime Minister heads the Council of Ministers.

  79. Session II — General Awareness and English — Polity

    79. Fundamental Duties were added by the:

    • A. 42nd Amendment (Correct)
    • B. 44th Amendment
    • C. 73rd Amendment
    • D. 86th Amendment

    Explanation: Fundamental Duties were added by the 42nd Constitutional Amendment.

  80. Session II — General Awareness and English — Economy

    80. MSP stands for:

    • A. Minimum Support Price (Correct)
    • B. Maximum Sale Price
    • C. Market Security Policy
    • D. Multi State Plan

    Explanation: MSP means Minimum Support Price.

  81. Session II — General Awareness and English — Geography

    81. The longest river in India is generally taken as:

    • A. Godavari
    • B. Ganga (Correct)
    • C. Yamuna
    • D. Narmada

    Explanation: In standard Indian GK usage, Ganga is treated as the longest river in India.

  82. Session II — General Awareness and English — Geography

    82. The desert located in western India is:

    • A. Sahara
    • B. Thar (Correct)
    • C. Gobi
    • D. Kalahari

    Explanation: The Thar Desert lies in western India.

  83. Session II — General Awareness and English — Biology

    83. The powerhouse of the cell is:

    • A. nucleus
    • B. mitochondria (Correct)
    • C. ribosome
    • D. lysosome

    Explanation: Mitochondria are called the powerhouse of the cell.

  84. Session II — General Awareness and English — Chemistry

    84. The chemical symbol of gold is:

    • A. Ag
    • B. Au (Correct)
    • C. Gd
    • D. Go

    Explanation: Gold has the symbol Au.

  85. Session II — General Awareness and English — Science

    85. Plants prepare food by:

    • A. respiration
    • B. digestion
    • C. photosynthesis (Correct)
    • D. excretion

    Explanation: Plants make food by photosynthesis.

  86. Session II — General Awareness and English — Biology

    86. Vitamin C deficiency causes:

    • A. rickets
    • B. scurvy (Correct)
    • C. night blindness
    • D. goitre

    Explanation: Scurvy is caused by deficiency of Vitamin C.

  87. Session II — General Awareness and English — Physics

    87. The speed of light is greatest in:

    • A. water
    • B. glass
    • C. vacuum (Correct)
    • D. air only

    Explanation: Light travels fastest in vacuum.

  88. Session II — General Awareness and English — Geography

    88. The largest ocean on Earth is:

    • A. Atlantic
    • B. Indian
    • C. Pacific (Correct)
    • D. Arctic

    Explanation: The Pacific Ocean is the largest.

  89. Session II — General Awareness and English — Chemistry

    89. The gas used in fire extinguishers is often:

    • A. oxygen
    • B. carbon dioxide (Correct)
    • C. hydrogen
    • D. helium

    Explanation: Carbon dioxide is commonly used in many fire extinguishers.

  90. Session II — General Awareness and English — Biology

    90. The human heart has _____ chambers.

    • A. 2
    • B. 3
    • C. 4 (Correct)
    • D. 5

    Explanation: The heart has four chambers.