Nayab Subba Preliminary Mock Test 3 (50 Questions)

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About this quiz

Nayab Subba preliminary mock test 3: 30 GK + 20 mental ability questions in the official unit-wise weightage. In the real exam each question carries 2 marks and 20% is deducted for each wrong answer.

This Lok Sewa practice set has 50 multiple-choice questions (Subject: Preliminary (GK and Mental Ability) · For: Nayab Subba · Level: Mixed). Take the quiz above first; after that, use the study list below to revise every question with its correct answer and a short explanation.

Study list: all 50 questions with answers and explanations
  1. Who was the first human to travel into space?

    • A) Neil Armstrong
    • B) Buzz Aldrin
    • C) Yuri Gagarin ✔
    • D) Valentina Tereshkova

    Why: Yuri Gagarin of the USSR orbited the Earth on 12 April 1961.

  2. The Atacama desert is in:

    • A) Argentina
    • B) Chile ✔
    • C) Mexico
    • D) Peru

    Why: The Atacama Desert is in northern Chile, between the Andes and the Pacific. It is the driest non-polar desert in the world.

  3. Which is the largest country by area?

    • A) Canada
    • B) China
    • C) USA
    • D) Russia ✔

    Why: Russia is the largest country by area, about 17.1 million km², covering parts of Europe and Asia. Canada is second.

  4. How many national parks does Nepal have after the creation of Chhayanath National Park?

    • A) 13 ✔
    • B) 12
    • C) 11
    • D) 14

    Why: Nepal had 12 national parks until Chhayanath in Mugu was added in 2082 BS, making 13.

  5. Sagarmatha National Park became a World Heritage Site in:

    • A) 1979 ✔
    • B) 1984
    • C) 1975
    • D) 1991

    Why: Sagarmatha National Park (set up in 2033 BS / 1976) was listed as a UNESCO World Heritage Site in 1979. Chitwan National Park was listed in 1984.

  6. Which river is generally regarded as the longest river of Nepal?

    • A) Koshi
    • B) Gandaki
    • C) Karnali ✔
    • D) Bagmati

    Why: The Karnali, which rises in Tibet and enters Nepal in Humla, is regarded as Nepal's longest river.

  7. What is the capital of Gandaki Province?

    • A) Pokhara ✔
    • B) Gorkha
    • C) Baglung
    • D) Damauli

    Why: Pokhara is the capital of Gandaki Province. Gandaki is Province No. 4 and includes districts such as Kaski, Syangja and Mustang.

  8. The industry first transformed by the Industrial Revolution was:

    • A) Textile ✔
    • B) Aviation
    • C) Electronics
    • D) Chemicals

    Why: Cotton textiles in Britain changed first, with machines such as the spinning jenny and the water frame. Steam power then spread to other industries.

  9. BP Koirala was imprisoned after 2017 BS at:

    • A) Sundarijal ✔
    • B) Nakkhu
    • C) Central Jail Bhadragol
    • D) Gorkha

    Why: After King Mahendra's takeover on Paush 1, 2017 BS, Prime Minister B. P. Koirala was kept at the Sundarijal military camp for about eight years.

  10. Bahadur Shah's regency ended in:

    • A) 1851 BS ✔
    • B) 1840 BS
    • C) 1856 BS
    • D) 1863 BS

    Why: Bahadur Shah ruled as regent for his nephew Rana Bahadur Shah until 1851 BS, when Rana Bahadur took power himself. Bahadur Shah was later imprisoned and died in 1854 BS.

  11. Who became PM after the general election of 2048?

    • A) Girija Prasad Koirala ✔
    • B) Man Mohan Adhikari
    • C) K.P. Bhattarai
    • D) Sher Bahadur Deuba

    Why: The Nepali Congress won and G.P. Koirala became PM.

  12. "Tarun Tapasi" is a work of:

    • A) Lekhnath Paudyal ✔
    • B) Motiram Bhatta
    • C) Devkota
    • D) Madhav Ghimire

    Why: Kavi Shiromani Lekhnath Paudyal wrote Tarun Tapasi.

  13. Who wrote the first biography of Bhanubhakta?

    • A) Motiram Bhatta ✔
    • B) Devkota
    • C) Sama
    • D) Mainali

    Why: Motiram Bhatta wrote the first biography of Bhanubhakta Acharya and helped make him known as Adikavi.

  14. Nepal Sambat was started by:

    • A) Shankhadhar Sakhwa ✔
    • B) Araniko
    • C) Amshuverma
    • D) Jayasthiti Malla

    Why: Shankhadhar Sakhwa started it in 879 AD.

  15. Tourism Act of Nepal is from:

    • A) 2035 BS ✔
    • B) 2072 BS
    • C) 2007 BS
    • D) 2055 BS

    Why: Nepal's Tourism Act is from 2035 BS. It regulates travel agencies, trekking agencies, hotels and mountaineering.

  16. The Seventh Plan is linked with which programme?

    • A) Basic needs programme ✔
    • B) PRSP
    • C) SDG
    • D) Green economy

    Why: The Seventh Plan (2042–2047 BS) launched the basic needs programme, aiming to meet people's basic needs such as food, clothing, housing, health and education.

  17. GNI is equal to:

    • A) GDP + net factor income from abroad ✔
    • B) GDP − depreciation
    • C) GDP + indirect taxes
    • D) GDP ÷ population

    Why: GNI (Gross National Income) = GDP + net factor income from abroad. It counts income earned by a country's residents, including from abroad.

  18. The part of a soap molecule that attaches to oil and dirt is the:

    • A) Hydrophobic tail ✔
    • B) Hydrophilic head
    • C) Nucleus
    • D) Glycerol

    Why: A soap molecule has a hydrophobic (water-hating) tail that sticks to oil and a hydrophilic (water-loving) head that faces water. Rinsing carries the dirt away.

  19. Generative AI creates:

    • A) New text, images or audio ✔
    • B) Only backups
    • C) Only hardware
    • D) Electricity

    Why: Generative AI creates new content such as text, images, audio or code, by learning patterns from large amounts of data. ChatGPT is an example.

  20. Down syndrome is caused by:

    • A) An extra chromosome 21 ✔
    • B) Lack of vitamin C
    • C) A bacteria
    • D) Too much sugar

    Why: Down syndrome is caused by an extra copy of chromosome 21 (trisomy 21), so the person has 47 chromosomes instead of 46.

  21. UNEP headquarters is in:

    • A) Nairobi ✔
    • B) Geneva
    • C) New York
    • D) Paris

    Why: The UN Environment Programme (UNEP) was set up in 1972 after the Stockholm Conference, and has its headquarters in Nairobi, Kenya.

  22. Which is a gaseous cycle?

    • A) Nitrogen cycle ✔
    • B) Phosphorus cycle
    • C) Sulphur from rocks only
    • D) Calcium cycle

    Why: In a gaseous cycle the main reservoir is the atmosphere. Nitrogen gas makes up about 78% of air, so the nitrogen cycle is gaseous. The phosphorus cycle is sedimentary.

  23. The ozone hole was first discovered over:

    • A) Antarctica ✔
    • B) Arctic
    • C) Nepal
    • D) Sahara

    Why: The ozone hole was first reported over Antarctica in 1985 by British Antarctic Survey scientists. This led to the Montreal Protocol (1987).

  24. Nepal lost about how much land in the Sugauli treaty?

    • A) One-tenth
    • B) One-third ✔
    • C) Half
    • D) Two-thirds

    Why: Under the Sugauli Treaty (1816) after the Anglo-Nepal war, Nepal lost about one-third of its land, including areas west of the Mahakali and east of the Mechi.

  25. Nepal first contributed to UN peacekeeping in:

    • A) 1958 ✔
    • B) 1955
    • C) 1974
    • D) 1990

    Why: Nepal first sent military observers to UN peacekeeping in 1958, to the UN Observation Group in Lebanon (UNOGIL).

  26. Which bill was approved by the House of Representatives providing mobile legal aid camps?

    • A) Free Legal Aid Bill, 2026 ✔
    • B) Federal Civil Service Bill
    • C) Education Bill
    • D) Police Bill

    Why: The Free Legal Aid Bill approved by the House of Representatives provides for mobile legal aid camps, so poor and remote people can get free legal help.

  27. The theory of bureaucracy is linked with:

    • A) Max Weber ✔
    • B) Maslow
    • C) Adam Smith
    • D) Fayol

    Why: German sociologist Max Weber gave the theory of bureaucracy: a hierarchy with written rules, specialised jobs and selection on merit.

  28. How many Nobel Prize fields are there today?

    • A) Four
    • B) Five
    • C) Six ✔
    • D) Seven

    Why: There are six fields: Physics, Chemistry, Medicine, Literature, Peace and Economics (added in 1969).

  29. The Ashes is a cricket series between England and:

    • A) Australia ✔
    • B) India
    • C) South Africa
    • D) New Zealand

    Why: The Ashes is a Test cricket series between England and Australia, played since 1882–83.

  30. Who was the first woman President of Nepal?

    • A) Sushila Karki
    • B) Bidya Devi Bhandari ✔
    • C) Onsari Gharti Magar
    • D) Sahana Pradhan

    Why: Bidya Devi Bhandari was elected in 2072 BS.

  31. Find the next term: 7, 14, 28, 56, ?

    • A) 112 ✔
    • B) 84
    • C) 70
    • D) 100

    Why: Each term is double the previous one: 7 × 2 = 14, 14 × 2 = 28, 28 × 2 = 56, so 56 × 2 = 112.

  32. P is the father of Q. R is the brother of P. How is R related to Q?

    • A) Uncle ✔
    • B) Brother
    • C) Grandfather
    • D) Cousin

    Why: R is the brother of Q's father, so R is Q's paternal uncle (kaka or thulobua).

  33. Ram is 7th from the top and 14th from the bottom. How many students are there?

    • A) 20 ✔
    • B) 21
    • C) 19
    • D) 22

    Why: 7 + 14 − 1 = 20.

  34. In assertion–reason questions, option "Both A and R are true and R explains A" is chosen when:

    • A) A happens because of R ✔
    • B) Only A is true
    • C) Only R is true
    • D) Both are false

    Why: R must be the correct explanation.

  35. A: Kathmandu is the capital of India. R: Kathmandu is in Nepal. The answer is:

    • A) A false; R true ✔
    • B) A true; R false
    • C) Both true
    • D) Both false

    Why: A is false, because Kathmandu is Nepal's capital and India's capital is New Delhi. R is true. So A is false and R is true.

  36. A: Metals conduct electricity. R: Metals have free electrons. The answer is:

    • A) Both true; R explains A ✔
    • B) Both true; R does not explain A
    • C) A true; R false
    • D) Both false

    Why: Both are true, and R explains A: free electrons move through the metal and carry the electric current.

  37. A and B together take 8 days; A alone takes 12 days. B alone takes:

    • A) 24 days ✔
    • B) 20 days
    • C) 4 days
    • D) 16 days

    Why: B's one-day work = 1/8 − 1/12 = 3/24 − 2/24 = 1/24, so B alone takes 24 days.

  38. LCM of 36 and 48 is:

    • A) 96
    • B) 144 ✔
    • C) 288
    • D) 72

    Why: 36 = 2² × 3² and 48 = 2⁴ × 3. LCM takes the highest powers: 2⁴ × 3² = 16 × 9 = 144.

  39. The ratio of 50 paisa to Rs 2 is:

    • A) 1 : 4 ✔
    • B) 1 : 2
    • C) 4 : 1
    • D) 25 : 1

    Why: Use the same unit first: Rs 2 = 200 paisa. So 50 : 200 = 1 : 4.

  40. Goods marked 25% above CP are sold at 10% discount. Profit percent:

    • A) 12.5% ✔
    • B) 15%
    • C) 10%
    • D) 13.5%

    Why: Let CP = 100. MP = 125. SP = 125 − 10% of 125 = 112.50. Profit = 12.50 on 100, so profit is 12.5%.

  41. Which pair are twin primes?

    • A) 11 and 13 ✔
    • B) 13 and 17
    • C) 7 and 11
    • D) 15 and 17

    Why: Twin primes are primes that differ by 2. 11 and 13 are both prime and 13 − 11 = 2.

  42. Pass mark is 40%. A student got 160 and failed by 40 marks. Full marks are:

    • A) 500 ✔
    • B) 400
    • C) 450
    • D) 600

    Why: Pass mark = 160 + 40 = 200. If 40% = 200, full marks = 200 × 100 ÷ 40 = 500.

  43. Today is Monday. What day will it be after 10 days?

    • A) Thursday ✔
    • B) Wednesday
    • C) Friday
    • D) Tuesday

    Why: 10 ÷ 7 leaves remainder 3, so count 3 days on from Monday: Thursday.

  44. SI is Rs 900 at 6% for 3 years. Principal:

    • A) Rs 5,000 ✔
    • B) Rs 4,500
    • C) Rs 6,000
    • D) Rs 3,000

    Why: P = SI × 100 ÷ (R × T) = 900 × 100 ÷ (6 × 3) = 90,000 ÷ 18 = Rs 5,000.

  45. How many squares are in a 4 × 4 grid?

    • A) 30 ✔
    • B) 16
    • C) 25
    • D) 20

    Why: Count by size: 1×1 = 16, 2×2 = 9, 3×3 = 4, 4×4 = 1. Total = 16 + 9 + 4 + 1 = 30. Rule: 1² + 2² + … + n².

  46. How many triangles are there in a square with both diagonals drawn?

    • A) 4
    • B) 6
    • C) 8 ✔
    • D) 10

    Why: 4 small triangles and 4 larger triangles each made of two small ones.

  47. How many rectangles (including squares) are in a 3 × 3 grid?

    • A) 36 ✔
    • B) 14
    • C) 9
    • D) 27

    Why: A 3 × 3 grid has 4 horizontal and 4 vertical lines. Choose 2 of each: 4C2 × 4C2 = 6 × 6 = 36 rectangles.

  48. 30 people like tea, 20 like coffee and 10 like both. How many like at least one?

    • A) 40 ✔
    • B) 50
    • C) 60
    • D) 30

    Why: At least one = tea + coffee − both = 30 + 20 − 10 = 40.

  49. A square with both diagonals drawn has how many triangles?

    • A) 8 ✔
    • B) 4
    • C) 6
    • D) 10

    Why: The diagonals make 4 small triangles in the middle. Each half of the square cut by one diagonal is also a triangle (4 of these). Total = 4 + 4 = 8.

  50. Which letter looks the same in both a mirror image and a water image?

    • A) O ✔
    • B) A
    • C) E
    • D) M

    Why: O is symmetric both left-right and top-bottom.

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