Mock Test 7 — Delhi Police Constable Full Pattern (100 MCQs)

This is a full-length practice test following the exact Delhi Police Constable written exam pattern: 25 Reasoning, 50 General Knowledge & Current Affairs, 15 Numerical Ability, and 10 Computer Knowledge questions.

Section A: Reasoning (Q1–25)

1. In the analogy "Bee is to Hive as Ant is to ___," the missing word is:
   (a) Colony (b) Hill (c) Nest (d) Ground
2. Find the missing number in the series: 3, 9, 27, 81, ?
   (a) 243 (b) 240 (c) 246 (d) 236
3. Which one does not belong with the others: Petrol, Diesel, Water, Kerosene?
   (a) Water (b) Petrol (c) Diesel (d) Kerosene
4. In a code, MUSIC is coded as OWUKE (each letter shifted two places forward). How is DANCE coded using the same rule?
   (a) FCPEG (b) FCPFG (c) ECPEG (d) FCOEG
5. A man walks 8 km south, then 15 km east. How far is he from his starting point?
   (a) 17 km (b) 20 km (c) 23 km (d) 15 km
6. R is S's father. T is S's daughter. How is R related to T?
   (a) Grandfather (b) Father (c) Uncle (d) Brother
7. In the letter series F, I, M, R, ?, what is the next letter (gaps +3, +4, +5, next +6)?
   (a) X (b) W (c) Y (d) V
8. Given: W > X ≥ Y > Z. Which of the following must be true?
   (a) W > Z (b) Z > W (c) X < Z (d) Y > W
9. In a class of 48 students, Karan ranks 20th from the top. What is his rank from the bottom?
   (a) 29th (b) 28th (c) 30th (d) 27th
10. If '@' denotes '+', '#' denotes '−', '%' denotes '×', and '$' denotes '÷', evaluate: 63 $ 7 % 3 @ 18 # 10.
    (a) 35 (b) 33 (c) 37 (d) 31
11. Ten people sit in a row facing north. G sits at the left end. H sits immediately to the right of G. I sits fifth to the right of H. How many people sit to the right of I?
    (a) 3 (b) 4 (c) 2 (d) 5
12. Statements: All engineers are graduates. Some graduates are managers. Conclusion: Some engineers are managers. Does this conclusion necessarily follow?
    (a) No, it does not necessarily follow (b) Yes, it follows validly (c) Only if all graduates are engineers (d) Cannot be determined
13. In a code, SIGNAL is coded by each letter's position in the alphabet as 19-9-7-14-1-12. How is TARGET coded using the same rule?
    (a) 20-1-18-7-5-20 (b) 20-1-18-7-5-19 (c) 19-1-18-7-5-20 (d) 20-2-18-7-5-20
14. Find the missing number in the series: 400, 360, 324, 292, ?
    (a) 264 (b) 262 (c) 266 (d) 260
15. A man is facing north. He turns 90° clockwise, then 180°, then 90° anticlockwise. Which direction is he facing now?
    (a) South (b) North (c) East (d) West
16. A is three times as old as B. Five years hence, A will be twice as old as B. Find B's present age.
    (a) 5 years (b) 6 years (c) 4 years (d) 7 years
17. Find the missing number in the series: 13, 28, 58, 118, ?
    (a) 238 (b) 236 (c) 240 (d) 234
18. Which of the following is not a multiple of 6: 84, 90, 100, 96?
    (a) 100 (b) 84 (c) 90 (d) 96
19. Eight colleagues sit in a row facing north. J sits at the right end. K sits immediately to the left of J. L sits fourth to the left of K. How many colleagues sit to the left of L?
    (a) 2 (b) 3 (c) 1 (d) 4
20. Statements: All licensed drivers have passed a test. Everyone who has passed the test follows traffic rules. Conclusion: All licensed drivers follow traffic rules. Does this follow?
    (a) Yes, it follows validly (b) No (c) Cannot be determined (d) Only partially
21. Find the missing number in the series: 8, 18, 38, 78, ?
    (a) 158 (b) 156 (c) 160 (d) 154
22. In the analogy "Chef is to Kitchen as Pilot is to ___," the missing word is:
    (a) Cockpit (b) Airport (c) Runway (d) Sky
23. In a code, WINTER is coded as XJOUFS (each letter shifted one place forward). How is MASTER coded using the same rule?
    (a) NBTUFS (b) NBTUFR (c) MBTUFS (d) NBSUFS
24. In a row of 72 people, Meena is 30th from the left. What is her position from the right?
    (a) 43rd (b) 42nd (c) 44th (d) 41st
25. Statements: All rifles are firearms. No firearm is a toy. Conclusion: No rifle is a toy. Does this follow?
    (a) Yes, it follows validly (b) No (c) Cannot be determined (d) Only partially

Section B: General Knowledge & Current Affairs (Q26–75)

26. Who was the first Chief Justice of India?
    (a) H.J. Kania (b) M.C. Chagla (c) Nagendra Singh (d) B.R. Ambedkar
27. Which Article of the Indian Constitution provides for the abolition of titles?
    (a) Article 18 (b) Article 17 (c) Article 19 (d) Article 21
28. Which Indian city is known as the "Electronic City" for its IT hardware industry?
    (a) Bengaluru (b) Hyderabad (c) Pune (d) Noida
29. The Champaran Satyagraha was Gandhi's first major movement in India, launched in which state?
    (a) Bihar (b) Gujarat (c) Uttar Pradesh (d) Maharashtra
30. Which is the largest saltwater lake in India?
    (a) Chilika Lake (b) Sambhar Lake (c) Pulicat Lake (d) Wular Lake
31. Who was the Viceroy of India at the time of independence in 1947?
    (a) Lord Mountbatten (b) Lord Wavell (c) Lord Linlithgow (d) Lord Curzon
32. The Indian Institute of Technology (IIT) system's first institute was established at:
    (a) Kharagpur (b) Delhi (c) Mumbai (d) Chennai
33. Which is the third highest civilian award in India?
    (a) Padma Bhushan (b) Bharat Ratna (c) Padma Vibhushan (d) Padma Shri
34. Who is credited with drafting the Objectives Resolution adopted by the Constituent Assembly?
    (a) Jawaharlal Nehru (b) B.R. Ambedkar (c) Rajendra Prasad (d) Sardar Patel
35. Which Indian state has one of the highest per capita incomes among Indian states?
    (a) Sikkim (b) Kerala (c) Punjab (d) Haryana
36. The August Offer was made by the British in which year?
    (a) 1940 (b) 1942 (c) 1935 (d) 1946
37. Which is the national heritage animal of India?
    (a) Elephant (b) Tiger (c) Lion (d) Peacock
38. Who was the first Deputy Prime Minister of India?
    (a) Sardar Vallabhbhai Patel (b) Morarji Desai (c) Charan Singh (d) Jagjivan Ram
39. Which Indian city is known as the "Queen of the Arabian Sea"?
    (a) Kochi (b) Mumbai (c) Goa (d) Mangaluru
40. The Third Battle of Panipat was fought in which year?
    (a) 1761 (b) 1526 (c) 1556 (d) 1857
41. Which is the only home of the Asiatic Lion in the wild, located in Gujarat?
    (a) Gir Forest (b) Sundarbans (c) Jim Corbett Park (d) Kaziranga National Park
42. Who founded the Ramakrishna Mission?
    (a) Swami Vivekananda (b) Raja Ram Mohan Roy (c) Swami Dayanand Saraswati (d) Ishwar Chandra Vidyasagar
43. Which is the longest railway platform in India?
    (a) Gorakhpur Railway Station (b) Howrah Junction (c) New Delhi Railway Station (d) Chennai Central
44. The Charter Act that ended the East India Company's trade monopoly with India was passed in which year?
    (a) 1813 (b) 1833 (c) 1853 (d) 1858
45. Which Indian state is known as the "Fruit Bowl of India"?
    (a) Himachal Pradesh (b) Jammu and Kashmir (c) Uttarakhand (d) Punjab
46. Who was the first Indian woman to practise law, having studied at Oxford?
    (a) Cornelia Sorabji (b) Sarojini Naidu (c) Vijaya Lakshmi Pandit (d) Kamala Sohonie
47. Which strait separates India from Sri Lanka?
    (a) Palk Strait (b) Strait of Malacca (c) Gulf of Mannar strait only (d) Ten Degree Channel
48. Who founded the Prarthana Samaj?
    (a) Atmaram Pandurang (b) Raja Ram Mohan Roy (c) Swami Vivekananda (d) Ishwar Chandra Vidyasagar
49. Which Indian city hosted the Asian Athletics Championships in 2017?
    (a) Bhubaneswar (b) New Delhi (c) Mumbai (d) Kolkata
50. The "Instrument of Accession" was primarily used for:
    (a) Princely states joining India or Pakistan at independence (b) Trade agreements (c) Military alliances (d) Constitutional amendments
51. Which Indian state has the largest number of Rajya Sabha seats?
    (a) Uttar Pradesh (b) Maharashtra (c) West Bengal (d) Tamil Nadu
52. Who wrote the epic poem "Meghaduta"?
    (a) Kalidasa (b) Banabhatta (c) Bhasa (d) Vishakhadatta
53. Which is the largest mangrove forest in the world, shared between India and Bangladesh?
    (a) Sundarbans (b) Gulf of Kutch mangroves (c) Bhitarkanika (d) Pichavaram
54. The Shimla Conference of 1945 was convened by which Viceroy?
    (a) Lord Wavell (b) Lord Mountbatten (c) Lord Linlithgow (d) Lord Curzon
55. Which Indian state is the largest producer of cashew nuts?
    (a) Maharashtra (b) Kerala (c) Goa (d) Karnataka
56. Who was the first Indian to win an Olympic medal in an individual event?
    (a) K.D. Jadhav (b) Milkha Singh (c) P.T. Usha (d) Leander Paes
57. Which Indian city is known as the "Millennium City"?
    (a) Gurugram (b) Noida (c) Navi Mumbai (d) Chandigarh
58. The "Yellow Revolution" in India refers to increased production of:
    (a) Oilseeds (b) Foodgrains (c) Milk (d) Fish
59. Which Indian state was the first to be formed on a linguistic basis?
    (a) Andhra Pradesh (b) Tamil Nadu (c) Karnataka (d) Kerala
60. Who was the President of India during the Emergency (1975–77)?
    (a) Fakhruddin Ali Ahmed (b) V.V. Giri (c) N. Sanjiva Reddy (d) Zakir Hussain
61. Which is the highest peak in the Andaman and Nicobar Islands?
    (a) Saddle Peak (b) Mount Harriet (c) Mount Diavolo (d) Mount Thullier
62. The "Silver Revolution" in India is associated with:
    (a) Egg and poultry production (b) Fish production (c) Cotton production (d) Sugar production
63. Which Indian classical dance form originated in Kerala?
    (a) Kathakali (b) Bharatanatyam (c) Odissi (d) Kuchipudi
64. Who founded the Deccan Education Society, which established Fergusson College?
    (a) Gopal Krishna Gokhale and associates (b) Bal Gangadhar Tilak alone (c) Raja Ram Mohan Roy (d) Ishwar Chandra Vidyasagar
65. The Indo-Gangetic Plain, one of the world's most fertile and densely populated regions, broadly spans:
    (a) Northern India, from Punjab to West Bengal (b) Only Punjab and Haryana (c) Only the Deccan Plateau (d) Only coastal Andhra Pradesh
66. The Cabinet Mission Plan was proposed in which year?
    (a) 1946 (b) 1942 (c) 1935 (d) 1919
67. Which Indian state has one of the largest numbers of registered vehicles among Indian states?
    (a) Uttar Pradesh (b) Maharashtra (c) Tamil Nadu (d) Karnataka
68. Who is considered the father of the "Bhoodan Movement"?
    (a) Vinoba Bhave (b) Jayaprakash Narayan (c) Mahatma Gandhi (d) Rajendra Prasad
69. Which is the southernmost point of mainland India?
    (a) Kanyakumari (b) Indira Point (c) Rameswaram (d) Kavaratti
70. The "Government of India Act, 1919" is also known as which reforms?
    (a) Montagu-Chelmsford Reforms (b) Morley-Minto Reforms (c) Mont-Ford Reforms only informally (d) Simon Reforms
71. Which Indian state is the largest producer of jute?
    (a) West Bengal (b) Assam (c) Bihar (d) Odisha
72. Who composed the patriotic poem "Saare Jahan Se Achha" for children's recitation, subsequently widely adopted?
    (a) Muhammad Iqbal (b) Rabindranath Tagore (c) Sarojini Naidu (d) Bankim Chandra Chatterjee
73. Which is the largest man-made canal system in India?
    (a) Indira Gandhi Canal (b) Sirhind Canal (c) Upper Ganga Canal (d) Yamuna Canal
74. The "Poona Sarvajanik Sabha," an early political association in Maharashtra, was founded with a leading role played by:
    (a) Mahadev Govind Ranade (b) Bal Gangadhar Tilak (c) Gopal Krishna Gokhale (d) Dadabhai Naoroji
75. Which Indian city is known as the "Temple City of India"?
    (a) Bhubaneswar (b) Varanasi (c) Madurai (d) Tirupati

Section C: Numerical Ability (Q76–90)

76. Simplify: 132 ÷ 11 + 10 × 5 − 25.
    (a) 37 (b) 35 (c) 39 (d) 33
77. A sum of ₹28,000 amounts to ₹35,000 in 2.5 years at simple interest. Find the rate of interest per annum.
    (a) 10% (b) 8% (c) 12% (d) 9%
78. The ratio of two numbers is 6:7. If their sum is 130, find the larger number.
    (a) 70 (b) 65 (c) 75 (d) 60
79. A shopkeeper buys an article for ₹960 and sells it for ₹1,200. Find the profit percentage.
    (a) 25% (b) 20% (c) 30% (d) 15%
80. Find the average of the first thirty-five natural numbers.
    (a) 18 (b) 17.5 (c) 18.5 (d) 17
81. A train 220 m long crosses a pole in 22 seconds. Find its speed in km/h.
    (a) 36 km/h (b) 30 km/h (c) 40 km/h (d) 45 km/h
82. If the cost price of 45 articles equals the selling price of 36 articles, find the profit percentage.
    (a) 25% (b) 20% (c) 30% (d) 15%
83. Find the value of: 40% of 250 + 10% of 400.
    (a) 140 (b) 135 (c) 145 (d) 130
84. A and B together can complete a piece of work in 16 days. A alone can do it in 24 days. In how many days can B alone complete it?
    (a) 48 days (b) 45 days (c) 50 days (d) 42 days
85. Find the compound interest on ₹40,000 at 5% per annum for 2 years, compounded annually.
    (a) ₹4,100 (b) ₹4,000 (c) ₹4,300 (d) ₹3,900
86. Solve for x: 6(x − 7) = 3x + 6.
    (a) 16 (b) 15 (c) 17 (d) 14
87. Find the area of a circle with radius 35 cm (use π = 22/7).
    (a) 3,850 sq cm (b) 3,800 sq cm (c) 3,900 sq cm (d) 3,750 sq cm
88. A boat's speed in still water is 20 km/h; stream speed is 4 km/h. Find the time to cover 96 km downstream.
    (a) 4 hours (b) 4.5 hours (c) 3.5 hours (d) 5 hours
89. Find the missing number in the series: 15, 30, 60, 120, ?
    (a) 240 (b) 235 (c) 245 (d) 230
90. A sum of ₹1,00,000 is divided between A and B such that A's share is 150% more than B's. Find B's share.
    (a) ₹40,000 (b) ₹38,000 (c) ₹42,000 (d) ₹36,000

Section D: Computer Knowledge (Q91–100)

91. Which of the following is used to enter text and commands into a computer?
    (a) Keyboard (b) Monitor (c) Speaker (d) Printer
92. What does "WAN" stand for?
    (a) Wide Area Network (b) World Area Network (c) Wide Access Network (d) World Access Network
93. Which of the following is a database management software?
    (a) MS Access (b) MS Word (c) MS PowerPoint (d) MS Paint
94. What is the full form of "SMTP"?
    (a) Simple Mail Transfer Protocol (b) Standard Mail Transfer Protocol (c) Simple Message Transfer Protocol (d) Standard Message Transfer Protocol
95. Which key combination is used to cut selected content?
    (a) Ctrl+X (b) Ctrl+C (c) Ctrl+V (d) Ctrl+Z
96. Which of the following is an example of a social media platform?
    (a) Facebook (b) MS Word (c) MS Excel (d) Adobe Reader
97. What does "SIM" stand for in "SIM card"?
    (a) Subscriber Identity Module (b) System Identity Module (c) Subscriber Information Module (d) System Information Module
98. Which of the following is used to store data temporarily while a program is running?
    (a) RAM (b) Hard disk (c) CD-ROM (d) DVD
99. What does "PDF" stand for?
    (a) Portable Document Format (b) Personal Document File (c) Printable Document Format (d) Portable Data File
100. Which of the following is used to connect to a wireless network?
     (a) Wi-Fi adapter (b) Keyboard (c) Mouse (d) Monitor

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Answer Key with Explanations

Section A:

1.(a) A bee lives in a hive, just as an ant lives in a colony.

2.(a) Each term triples: 3×3=9, 9×3=27, 27×3=81, 81×3=243.

3.(a) Petrol, diesel, and kerosene are fuels, while water is not, making it the odd one out.

4.(a) Each letter shifts two places forward: D+2=F, A+2=C, N+2=P, C+2=E, E+2=G, giving FCPEG.

5.(a) By the Pythagorean theorem, distance = √(8²+15²) = √(64+225) = √289 = 17 km.

6.(a) R is S's father, and T is S's daughter, so R is T's grandfather.

7.(a) The gaps increase by one each time: F(6)+3=I(9), I+4=M(13), M+5=R(18), R+6=X(24).

8.(a) Since W>X≥Y>Z, it follows directly that W>Z.

9.(a) Rank from the bottom = 48 − 20 + 1 = 29th.

10.(a) Following the order of operations: 63÷7=9, 9×3=27, 27+18=45, 45−10=35.

11.(a) G is at the left end (position 1); H is immediately right of G (position 2); I is fifth to the right of H, so I is at position 2+5=7; with ten people in the row, 3 people sit to the right of I.

12.(a) No, this does not necessarily follow: the "some graduates" who are managers may or may not include the specific graduates who are engineers.

13.(a) Each letter is coded by its position in the alphabet; applying the same rule, TARGET is coded as 20-1-18-7-5-20.

14.(a) The differences fall by 4 each time: 40, 36, 32, then 28; 292−28 = 264.

15.(a) The net turn is 90° clockwise plus 180° plus 90° anticlockwise, which equals 180° overall; facing north, a 180° turn gives south.

16.(a) Let B's present age be x and A's be 3x; five years hence, 3x+5 = 2(x+5), giving 3x+5 = 2x+10, so x=5.

17.(a) Each term follows ×2+2: 13×2+2=28, 28×2+2=58, 58×2+2=118, 118×2+2=238.

18.(a) 84, 90, and 96 are multiples of 6, while 100 is not.

19.(a) J is at the right end (position 8); K is immediately left of J (position 7); L is fourth to the left of K, so L is at position 7−4=3; 2 people sit to the left of L (positions 1 and 2).

20.(a) Yes, this follows validly: all licensed drivers have passed a test, and everyone who has passed the test follows traffic rules, so all licensed drivers follow traffic rules.

21.(a) Each term follows ×2+2: 8×2+2=18, 18×2+2=38, 38×2+2=78, 78×2+2=158.

22.(a) A chef works in a kitchen, just as a pilot works in a cockpit.

23.(a) Each letter shifts one place forward: M+1=N, A+1=B, S+1=T, T+1=U, E+1=F, R+1=S, giving NBTUFS.

24.(a) Position from the right = 72 − 30 + 1 = 43rd.

25.(a) Yes, this follows validly: all rifles are firearms, and no firearm is a toy, so no rifle is a toy.

Section B:

26.(a) H.J. Kania was the first Chief Justice of India.

27.(a) Article 18 provides for the abolition of titles.

28.(a) Bengaluru is known as the "Electronic City" for its IT hardware industry.

29.(a) The Champaran Satyagraha, Gandhi's first major movement in India, was launched in Bihar.

30.(a) Chilika Lake is the largest saltwater lagoon in India.

31.(a) Lord Mountbatten was the Viceroy of India at the time of independence in 1947.

32.(a) The first IIT was established at Kharagpur, in 1951.

33.(a) The Padma Bhushan is the third highest civilian award in India.

34.(a) Jawaharlal Nehru is credited with drafting the Objectives Resolution.

35.(a) Sikkim has one of the highest per capita incomes among Indian states.

36.(a) The August Offer was made by the British in 1940.

37.(a) The Elephant is the national heritage animal of India.

38.(a) Sardar Vallabhbhai Patel was the first Deputy Prime Minister of India.

39.(a) Kochi is known as the "Queen of the Arabian Sea."

40.(a) The Third Battle of Panipat was fought in 1761.

41.(a) The Gir Forest in Gujarat is the only home of the Asiatic Lion in the wild.

42.(a) Swami Vivekananda founded the Ramakrishna Mission.

43.(a) Gorakhpur Railway Station has the longest railway platform in India.

44.(a) The Charter Act of 1833 ended the East India Company's trade monopoly with India.

45.(a) Himachal Pradesh is known as the "Fruit Bowl of India."

46.(a) Cornelia Sorabji, who studied law at Oxford, is recognised as the first Indian woman to practise law.

47.(a) The Palk Strait separates India from Sri Lanka.

48.(a) Atmaram Pandurang founded the Prarthana Samaj.

49.(a) Bhubaneswar hosted the Asian Athletics Championships in 2017.

50.(a) The "Instrument of Accession" was primarily used for princely states joining India or Pakistan at independence.

51.(a) Uttar Pradesh has the largest number of Rajya Sabha seats among Indian states.

52.(a) Kalidasa wrote the epic poem "Meghaduta."

53.(a) The Sundarbans, shared between India and Bangladesh, is the largest mangrove forest in the world.

54.(a) Lord Wavell convened the Shimla Conference of 1945.

55.(a) Maharashtra is the largest producer of cashew nuts among Indian states.

56.(a) K.D. Jadhav was the first Indian to win an Olympic medal in an individual event, at the 1952 Helsinki Olympics.

57.(a) Gurugram is known as the "Millennium City."

58.(a) The "Yellow Revolution" in India refers to increased production of oilseeds.

59.(a) Andhra Pradesh was the first Indian state to be formed on a linguistic basis, in 1953.

60.(a) Fakhruddin Ali Ahmed was the President of India during the Emergency (1975–77).

61.(a) Saddle Peak is the highest peak in the Andaman and Nicobar Islands.

62.(a) The "Silver Revolution" in India is associated with egg and poultry production.

63.(a) Kathakali originated in Kerala.

64.(a) Gopal Krishna Gokhale, along with associates, founded the Deccan Education Society.

65.(a) The Indo-Gangetic Plain broadly spans Northern India, from Punjab to West Bengal.

66.(a) The Cabinet Mission Plan was proposed in 1946.

67.(a) Uttar Pradesh has one of the largest numbers of registered vehicles among Indian states.

68.(a) Vinoba Bhave is considered the father of the "Bhoodan Movement."

69.(a) Kanyakumari is the southernmost point of mainland India.

70.(a) The Government of India Act, 1919, is also known as the Montagu-Chelmsford Reforms.

71.(a) West Bengal is the largest producer of jute among Indian states.

72.(a) Muhammad Iqbal composed the patriotic poem "Saare Jahan Se Achha."

73.(a) The Indira Gandhi Canal is the largest man-made canal system in India.

74.(a) Mahadev Govind Ranade founded the "Poona Sarvajanik Sabha."

75.(a) Bhubaneswar is known as the "Temple City of India."

Section C:

76.(a) 132÷11=12; 10×5=50; 12+50−25=37.

77.(a) Interest = 35,000−28,000 = ₹7,000 over 2.5 years; rate = (7,000×100)/(28,000×2.5) = 10%.

78.(a) The parts total 6+7=13; larger number = 130×7/13 = 70.

79.(a) Profit = 1,200−960 = ₹240; profit percentage = (240/960)×100 = 25%.

80.(a) The first thirty-five natural numbers sum to 630; average = 630/35 = 18.

81.(a) Speed = 220 m / 22 s = 10 m/s = 10×18/5 = 36 km/h.

82.(a) If CP of 45 articles equals SP of 36 articles, SP/CP per article = 45/36 = 1.25, a profit of 25%.

83.(a) 40% of 250 = 100; 10% of 400 = 40; sum = 140.

84.(a) Combined rate = 1/16; A's rate = 1/24; B's rate = 1/16−1/24 = 3/48−2/48 = 1/48, so B alone takes 48 days.

85.(a) Amount = 40,000×(1.05)² = 44,100; compound interest = ₹4,100.

86.(a) 6(x−7)=3x+6 gives 6x−42=3x+6, so 3x=48, x=16.

87.(a) Area = (22/7)×35² = 22×175 = 3,850 sq cm.

88.(a) Downstream speed = 20+4 = 24 km/h; time = 96/24 = 4 hours.

89.(a) Each term doubles: 15×2=30, 30×2=60, 60×2=120, 120×2=240.

90.(a) A's share is 2.5 times B's (150% more), so 3.5 parts = 1,00,000, giving B's share = ₹40,000.

Section D:

91.(a) A keyboard is used to enter text and commands into a computer.

92.(a) WAN stands for Wide Area Network.

93.(a) MS Access is a database management software.

94.(a) SMTP stands for Simple Mail Transfer Protocol.

95.(a) Ctrl+X is used to cut selected content.

96.(a) Facebook is an example of a social media platform.

97.(a) SIM stands for Subscriber Identity Module.

98.(a) RAM is used to store data temporarily while a program is running.

99.(a) PDF stands for Portable Document Format.

100.(a) A Wi-Fi adapter is used to connect to a wireless network.