About this quiz
Nayab Subba preliminary mock test 2: 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
The Moon takes about how long to go round the Earth?
- A) 27.3 days ✔
- B) 365 days
- C) 24 hours
- D) 7 days
Why: The Moon takes about 27.3 days to go round the Earth once (sidereal month).
The Arctic Circle lies at:
- A) 23.5° N
- B) 45° N
- C) 66.5° N ✔
- D) 90° N
Why: The Arctic Circle lies at 66.5° N.
The standard meridian of Nepal passes near:
- A) Gaurishankar ✔
- B) Everest
- C) Kanchenjunga
- D) Dhaulagiri
Why: Nepal's standard meridian (86°15′ E) passes near Mount Gaurishankar.
The Tarai covers about what share of Nepal's area?
- A) 15%
- B) 17% ✔
- C) 68%
- D) 35%
Why: The Terai covers about 17% of Nepal's area but has about half the population.
How many ritu (seasons) are in the Nepali calendar?
- A) 4
- B) 5
- C) 6 ✔
- D) 3
Why: The Nepali calendar has 6 ritus of two months each.
Which region of Nepal is known as the granary of the country?
- A) Hill region
- B) Mountain region
- C) Tarai region ✔
- D) Trans-Himalayan region
Why: The Terai, with fertile alluvial soil, is the granary of Nepal.
Khaptad National Park is known for its:
- A) Grasslands and the hermit Khaptad Baba ✔
- B) Dolphins
- C) Rhinos
- D) Desert
Why: Khaptad National Park (Far West) is known for its grasslands (patans) and the hermit Khaptad Baba.
Voltaire was a French thinker known for supporting:
- A) Freedom of speech and religion ✔
- B) Monarchy
- C) Feudalism
- D) Colonialism
Why: Voltaire, an 18th-century French thinker, supported freedom of speech and religion.
The Muluki Ain was Nepal's first:
- A) Written national legal code ✔
- B) Constitution
- C) Newspaper
- D) Treaty
Why: The Muluki Ain of 1910 BS, issued by Jung Bahadur Rana, was Nepal's first written national legal code.
The phrase 'Better to die than live a coward' is linked to:
- A) Gorkhali soldiers ✔
- B) Mughals
- C) Sikhs
- D) Marathas
Why: 'Kayar hunu bhanda marnu ramro' is the famous motto of Gorkhali soldiers.
Nepal joined the United Nations in:
- A) 1955 AD ✔
- B) 1950 AD
- C) 1960 AD
- D) 1945 AD
Why: Nepal joined the UN on 14 December 1955.
Ghode Jatra is held at:
- A) Tundikhel ✔
- B) Lumbini
- C) Pashupati
- D) Swayambhu
Why: Ghode Jatra, the horse festival, is held at Tundikhel in Kathmandu.
Kasthamandap, rebuilt after 2015, is in:
- A) Kathmandu Durbar Square ✔
- B) Patan
- C) Bhaktapur
- D) Kirtipur
Why: Kasthamandap is in Kathmandu Durbar Square.
Madan Puraskar is given for:
- A) Best Nepali book of the year ✔
- B) Sports
- C) Science
- D) Peace
Why: It is given for the best Nepali book of the year.
Jute is grown mostly in:
- A) Eastern Terai (Morang, Jhapa) ✔
- B) Mustang
- C) Humla
- D) Kathmandu
Why: Jute is grown mostly in the eastern Terai (Morang, Jhapa).
The Kathmandu–Terai Fast Track is being built by:
- A) Nepal Army ✔
- B) Indian company
- C) Chinese company
- D) World Bank
Why: The Kathmandu–Terai (Nijgadh) Fast Track is being built by the Nepal Army, which was given the project by the government.
The Electricity Act of Nepal is from:
- A) 2049 BS ✔
- B) 2042 BS
- C) 2072 BS
- D) 2020 BS
Why: The Electricity Act is from 2049 BS.
The SI unit of temperature is the:
- A) Kelvin ✔
- B) Celsius
- C) Fahrenheit
- D) Joule
Why: The SI unit of temperature is the kelvin (K); 0 °C = 273.15 K.
Rabies is transmitted by:
- A) Bite of infected animals ✔
- B) Water
- C) Mosquito
- D) Air
Why: Rabies spreads through the bite of infected animals, mainly dogs.
Cleaning the blood with a machine when both kidneys fail is called what?
- A) Transfusion
- B) Vaccination
- C) Dialysis ✔
- D) Respiration
Why: Dialysis uses a machine to clean the blood when the kidneys fail.
Which province is the most populous per Census 2078?
- A) Madhesh ✔
- B) Bagmati
- C) Koshi
- D) Lumbini
Why: Madhesh Province is the most populous.
Converting atmospheric nitrogen into usable forms is:
- A) Nitrogen fixation ✔
- B) Denitrification
- C) Transpiration
- D) Respiration
Why: Nitrogen fixation, done by bacteria such as Rhizobium and by lightning.
Which ecological region has the largest population share?
- A) Terai ✔
- B) Hill
- C) Mountain
- D) Equal
Why: The Terai has the largest share of the population, about half.
The Treaty of Thapathali was signed with:
- A) China
- B) Tibet ✔
- C) British India
- D) Bhutan
Why: It was signed with Tibet in 1856 AD.
Nepal–USA diplomatic relations were established on:
- A) 25 April 1947 ✔
- B) 17 June 1947
- C) 1 August 1955
- D) 1 September 1956
Why: Nepal and the USA established diplomatic relations on 25 April 1947.
The first person to climb Everest without bottled oxygen was:
- A) Reinhold Messner (with Peter Habeler) ✔
- B) Tenzing
- C) Hillary
- D) Apa Sherpa
Why: Reinhold Messner and Peter Habeler, in 1978.
ISP stands for:
- A) Internet Service Provider ✔
- B) Internal System Program
- C) International Service Post
- D) Internet Security Protocol
Why: ISP stands for Internet Service Provider, a company that gives internet connections to homes and offices.
What is the full form of CIAA?
- A) Commission for the Investigation of Abuse of Authority ✔
- B) Central Investigation Agency of Asia
- C) Commission for International Aid and Assistance
- D) Council for Inquiry of Administrative Acts
Why: Commission for the Investigation of Abuse of Authority.
Nepal's National Children's Day is on:
- A) 14 Bhadra ✔
- B) 27 Paush
- C) 16 Magh
- D) 1 Baisakh
Why: Nepal celebrates National Children's Day (Bal Diwas) on 14 Bhadra every year.
How many districts were hit by the Bhote Koshi–Trishuli flood?
- A) Eight ✔
- B) Three
- C) Five
- D) Twelve
Why: The 26 August 2026 flood hit eight districts along the Bhote Koshi–Trishuli–Narayani river system: Rasuwa, Nuwakot, Dhading, Gorkha, Tanahun, Chitwan, Nawalparasi (Bardaghat Susta East) and Nawalparasi (Bardaghat Susta West).
If WATER is coded as YCVGT, how is FIRE coded?
- A) GJSF
- B) HKTG ✔
- C) HKSG
- D) DGPC
Why: Each letter moves 2 places forward (W→Y, A→C). So F→H, I→K, R→T, E→G: HKTG.
Statements: Some pens are blue. All blue things are bright. Which conclusion follows?
- A) Some pens are bright ✔
- B) All pens are bright
- C) No pen is bright
- D) All bright things are pens
Why: The pens that are blue must also be bright, so 'Some pens are bright' follows.
Find the odd one out: Nepali, Hindi, English, Asia
- A) Asia ✔
- B) Nepali
- C) Hindi
- D) English
Why: Nepali, Hindi and English are languages; Asia is a continent.
In a queue, Gita is 5th from the front and Rita is 4 places behind Gita. What is Rita's position from the front?
- A) 8th
- B) 9th ✔
- C) 10th
- D) 1st
Why: Rita is 5 + 4 = 9th from the front.
You face East and turn right. Which direction do you face now?
- A) South ✔
- B) North
- C) West
- D) East
Why: Turning right (clockwise 90°) from East gives South.
In a class, 20 like tea, 15 like coffee and 5 like both. How many like at least one?
- A) 30 ✔
- B) 35
- C) 40
- D) 25
Why: At least one = 20 + 15 − 5 = 30.
An ordinary year has how many odd days?
- A) 1 ✔
- B) 2
- C) 0
- D) 3
Why: 365 = 52 weeks + 1 day, so 1 odd day.
13% VAT on Rs 2,500 is:
- A) Rs 325 ✔
- B) Rs 250
- C) Rs 300
- D) Rs 375
Why: 2,500 × 13 ÷ 100 = Rs 325.
SI on Rs 6,000 for 73 days at 10% per year:
- A) Rs 120 ✔
- B) Rs 600
- C) Rs 73
- D) Rs 160
Why: SI = 6,000 × 10% × 73/365 = 600 × 0.2 = Rs 120.
A train passes a pole in 15 seconds and a platform 100 m long in 25 seconds. The length of the train is:
- A) 100 m
- B) 120 m
- C) 150 m ✔
- D) 200 m
Why: Speed is the same: L/15 = (L + 100)/25, so 25L = 15L + 1,500, L = 150 m.
Amount of Rs 8,000 at 5% CI for 2 years:
- A) Rs 8,820 ✔
- B) Rs 8,800
- C) Rs 8,400
- D) Rs 9,000
Why: Amount = 8,000 × 1.05 × 1.05 = 8,000 × 1.1025 = Rs 8,820.
12 workers finish a job in 15 days. How many days for 20 workers?
- A) 8
- B) 9 ✔
- C) 10
- D) 25
Why: Work = 12 × 15 = 180 worker-days; 180 ÷ 20 = 9 days.
The average of some numbers is 10. Each is increased by 5. The new average is:
- A) 15 ✔
- B) 10
- C) 50
- D) 20
Why: Adding 5 to every number raises the average by 5: 10 + 5 = 15.
36 × 25 = ?
- A) 900 ✔
- B) 800
- C) 925
- D) 1,000
Why: 36 × 100 ÷ 4 = 900.
For mirror-clock questions, the actual time is found by subtracting the shown time from:
- A) 11:60 ✔
- B) 12:00
- C) 18:30
- D) 6:30
Why: Subtract the mirror time from 11:60 (i.e. 12:00). Example: mirror 3:20 → 11:60 − 3:20 = 8:40.
A circle has how many lines of symmetry?
- A) Infinite ✔
- B) 1
- C) 4
- D) 0
Why: A circle has infinite lines of symmetry: any line through its centre divides it equally.
How many lines of symmetry does a square have?
- A) 4 ✔
- B) 2
- C) 1
- D) 8
Why: A square has 4 lines of symmetry: 2 through the middles of sides and 2 diagonals.
How many edges does a cube have?
- A) 12 ✔
- B) 8
- C) 6
- D) 10
Why: A cube has 12 edges, 6 faces and 8 corners (vertices).
An arrow pointing up is turned 90° clockwise. It now points:
- A) Right ✔
- B) Left
- C) Down
- D) Up
Why: Turning 90° clockwise from up gives right.
A dot is inside a circle and a triangle but outside a square. In the answer figure you need a region that is:
- A) Common to circle and triangle, not in the square ✔
- B) Inside all three
- C) Inside only the square
- D) Outside all shapes
Why: Choose a region that lies inside both the circle and the triangle but outside the square.