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ICG Navik GD practice questions

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Question 1General Knowledge / Awareness

Which is the largest ocean on Earth?

  1. Atlantic Ocean
  2. Indian Ocean
  3. Pacific Ocean Correct answer.
  4. Arctic Ocean

Explanation

The Pacific Ocean covers about one-third of the planet's surface and is larger than all other oceans combined. It stretches between Asia and Australia on the west and the Americas on the east.

Question 2General Knowledge / Awareness

What is the capital city of Australia?

  1. Canberra Correct answer.
  2. Melbourne
  3. Perth
  4. Sydney

Explanation

Canberra was purpose-built as the national capital to settle rivalry between Sydney and Melbourne. It hosts Parliament House and the main government institutions.

Question 3General Knowledge / Awareness

Which gas makes up the largest share of Earth's atmosphere?

  1. Nitrogen Correct answer.
  2. Carbon dioxide
  3. Argon
  4. Oxygen

Explanation

Nitrogen accounts for roughly 78 percent of the atmosphere by volume. Oxygen is the second most abundant at about 21 percent.

Question 4General Knowledge / Awareness

The Indian Navy's rank of 'Admiral' is equivalent to which rank in the Indian Army?

  1. Major General
  2. General Correct answer.
  3. Brigadier
  4. Lieutenant General

Explanation

Naval four-star rank Admiral is equivalent to the Army rank of General and the Air Force rank of Air Chief Marshal. Rank equivalence follows the three-star and four-star hierarchy across services.

Question 5General Knowledge / Awareness

Which document is known as the fundamental law of a country that lays down the structure of its government?

  1. The Statute Book
  2. The Manifesto
  3. The Constitution Correct answer.
  4. The Gazette

Explanation

A constitution sets out the framework of government, the powers of its organs, and the rights of citizens. All other laws derive their validity from it.

Question 6General Knowledge / Awareness

Which planet in our solar system is known as the 'Red Planet'?

  1. Jupiter
  2. Mercury
  3. Mars Correct answer.
  4. Venus

Explanation

Mars appears reddish because its surface is rich in iron oxide, commonly called rust. This distinctive colour gave rise to its popular name.

Question 7General Knowledge / Awareness

The Tropic of Cancer passes through which of these Indian states?

  1. Rajasthan Correct answer.
  2. Tamil Nadu
  3. Kerala
  4. Punjab

Explanation

The Tropic of Cancer crosses India roughly through the middle of the country, passing through states including Gujarat, Rajasthan, Madhya Pradesh and others. Rajasthan lies on its path.

Question 8General Knowledge / Awareness

Which is the smallest prime number?

  1. 1
  2. 3
  3. 0
  4. 2 Correct answer.

Explanation

A prime number has exactly two distinct positive divisors: one and itself. The number 2 satisfies this and is the smallest prime.

Question 9General Knowledge / Awareness

What does the term 'monsoon' primarily refer to in the Indian context?

  1. A seasonal reversal of wind direction Correct answer.
  2. A type of tropical cyclone
  3. A cold desert wind
  4. A period of drought

Explanation

The monsoon is a seasonal reversal of prevailing winds, bringing moist air from the sea in summer and dry air from land in winter. India's rainfall is dominated by the southwest summer monsoon.

Question 10General Knowledge / Awareness

Which ocean current is warm and flows along the eastern coast of North America?

  1. Canary Current
  2. Humboldt Current
  3. Labrador Current
  4. Gulf Stream Correct answer.

Explanation

The Gulf Stream carries warm water from the Gulf of Mexico north-east along North America's east coast. It moderates the climate of western Europe.

Question 11General Knowledge / Awareness

The 'Doldrums' are best described as which of the following?

  1. A polar high-pressure zone
  2. A zone of permanent snowfall
  3. A belt of calm winds near the equator Correct answer.
  4. A region of strong westerlies

Explanation

The doldrums are the equatorial belt of low pressure where winds are light and variable, with rising air and frequent calms. Sailing ships historically struggled to cross this zone.

Question 12General Knowledge / Awareness

Which international organisation was established in 1945 to maintain peace and security?

  1. NATO
  2. World Bank
  3. League of Nations
  4. United Nations Correct answer.

Explanation

The United Nations was founded in 1945 after the Second World War to prevent future conflicts and promote cooperation. Its charter commits members to maintaining international peace and security.

Question 13General Knowledge / Awareness

Which of these is the correct expansion of the abbreviation 'EEZ' in maritime law?

  1. Economic Export Zone
  2. External Enquiry Zone
  3. Exclusive Economic Zone Correct answer.
  4. Extended Environmental Zone

Explanation

An Exclusive Economic Zone is a sea area extending up to 200 nautical miles from a coastal state's baseline. Within it the state has special rights over resources and economic activity.

Question 14General Knowledge / Awareness

A ship's speed is commonly measured in knots. One knot equals how many nautical miles per hour?

  1. 1 Correct answer.
  2. 1.852
  3. 0.5
  4. 2.5

Explanation

By definition, one knot is one nautical mile per hour. A nautical mile is about 1.852 kilometres, but the knot itself is simply one nautical mile per hour.

Question 15General Knowledge / Awareness

Which is the longest river in India?

  1. Godavari
  2. Ganga Correct answer.
  3. Narmada
  4. Brahmaputra

Explanation

The Ganga is the longest river flowing within India, running from the Himalayas to the Bay of Bengal. It is also culturally significant across northern India.

Question 16General Knowledge / Awareness

Which vitamin is produced by the human body when the skin is exposed to sunlight?

  1. Vitamin B12
  2. Vitamin D Correct answer.
  3. Vitamin A
  4. Vitamin C

Explanation

Ultraviolet light triggers the synthesis of vitamin D in the skin. It is essential for calcium absorption and bone health.

Question 17General Knowledge / Awareness

Which of the following is a renewable source of energy?

  1. Coal
  2. Petroleum
  3. Wind Correct answer.
  4. Natural gas

Explanation

Renewable sources are replenished naturally on a human timescale; wind is continuously generated by atmospheric processes. Fossil fuels such as coal and petroleum are finite.

Question 18General Knowledge / Awareness

The Indian Navy's premier training establishment for officers is located at which place?

  1. Coimbatore
  2. Dehradun
  3. Ezhimala Correct answer.
  4. Lonavala

Explanation

The Indian Naval Academy at Ezhimala in Kerala is the primary officer training establishment of the Indian Navy. It trains cadets for the navy and coast guard.

Question 19General Knowledge / Awareness

Which strait separates India from Sri Lanka?

  1. Strait of Malacca
  2. Strait of Hormuz
  3. Palk Strait Correct answer.
  4. Bering Strait

Explanation

The Palk Strait lies between the south-eastern coast of India and northern Sri Lanka. It connects the Bay of Bengal to the Gulf of Mannar.

Question 20General Knowledge / Awareness

Which of the following is the correct order of the layers of the atmosphere from the Earth's surface upward?

  1. Troposphere, Mesosphere, Stratosphere, Thermosphere
  2. Troposphere, Stratosphere, Mesosphere, Thermosphere Correct answer.
  3. Stratosphere, Troposphere, Mesosphere, Thermosphere
  4. Mesosphere, Troposphere, Thermosphere, Stratosphere

Explanation

The atmosphere is layered by temperature: troposphere nearest the ground, then stratosphere, mesosphere and thermosphere. Weather occurs mainly in the troposphere, while ozone sits in the stratosphere.

Question 21General Knowledge / Awareness

If a boat travels 12 nautical miles in 3 hours, what is its average speed in knots?

  1. 4 knots Correct answer.
  2. 6 knots
  3. 3 knots
  4. 36 knots

Explanation

Speed in knots equals nautical miles divided by hours. Dividing 12 by 3 gives 4 knots.

Question 22General Knowledge / Awareness

Which is the highest mountain peak located entirely within India?

  1. Kanchenjunga
  2. Nanda Devi Correct answer.
  3. Mount Everest
  4. K2

Explanation

Nanda Devi in Uttarakhand is the highest peak lying wholly within Indian territory. Kanchenjunga lies on the India-Nepal border and K2 is in Pakistan-administered territory.

Question 23General Knowledge / Awareness

The 'Sargasso Sea' is notable because it is a sea that is defined by which feature?

  1. Being the deepest sea on Earth
  2. Being frozen for most of the year
  3. Being landlocked by four countries
  4. Being bounded entirely by ocean currents Correct answer.

Explanation

The Sargasso Sea in the North Atlantic is bounded by ocean currents rather than land. It is named for the floating Sargassum seaweed that gathers there.

Question 24General Knowledge / Awareness

Which body of the United Nations has primary responsibility for the maintenance of international peace and security?

  1. Economic and Social Council
  2. Security Council Correct answer.
  3. Secretariat
  4. General Assembly

Explanation

The Security Council is charged under the UN Charter with maintaining international peace and security. It can impose sanctions and authorise peacekeeping missions.

Question 25General Knowledge / Awareness

Which of these instruments is used on a ship to determine its direction relative to magnetic north?

  1. Chronometer
  2. Barometer
  3. Compass Correct answer.
  4. Sextant

Explanation

A magnetic compass aligns with Earth's magnetic field to indicate direction. The sextant measures angles for celestial navigation and the chronometer keeps time.

Question 26General Knowledge / Awareness

Which Indian city is the headquarters of the Indian Coast Guard?

  1. Mumbai
  2. Visakhapatnam
  3. New Delhi Correct answer.
  4. Chennai

Explanation

The Indian Coast Guard is a central armed force whose headquarters is located in the national capital, New Delhi. Regional commands are spread across coastal cities, but the apex headquarters functions from New Delhi.

Question 27General Knowledge / Awareness

The Indian Coast Guard was formally established as an armed force of the Union in which year?

  1. 1978 Correct answer.
  2. 1950
  3. 1986
  4. 1962

Explanation

The Coast Guard Act was passed in 1978, bringing the force into formal existence on 18 August 1978. It was created to protect India's maritime zones and enforce laws in coastal waters.

Question 28General Knowledge / Awareness

Under the Indian Constitution, which body has the power to legislate on matters relating to naval defence?

  1. District councils
  2. State legislatures
  3. Municipal corporations
  4. Parliament of India Correct answer.

Explanation

Defence, including naval, military and air forces, is a Union List subject under the Seventh Schedule. Only Parliament can legislate on such matters. State and local bodies have no competence over defence.

Question 29General Knowledge / Awareness

Which of these is the standard international distress signal used at sea?

  1. Over
  2. SOS Correct answer.
  3. Roger
  4. Pan-pan

Explanation

SOS is the internationally recognised distress signal indicating grave and imminent danger requiring immediate assistance. Pan-pan signals urgency but not immediate danger, and Roger and Over are ordinary radio procedure words.

Question 30General Knowledge / Awareness

What is the primary role of a lighthouse?

  1. To record tidal variations in the sea
  2. To warn ships of nearby hazards and mark safe channels Correct answer.
  3. To refuel patrol boats at sea
  4. To measure the speed of passing vessels

Explanation

Lighthouses are fixed aids to navigation that use a distinctive light to warn mariners of dangers and to mark safe approaches. They do not measure speed, record tides, or supply fuel to vessels.

Question 31General Knowledge / Awareness

In maritime terminology, what does the 'draught' of a ship refer to?

  1. The length of the ship from bow to stern
  2. The vertical distance from the keel to the waterline Correct answer.
  3. The width of the ship at its widest point
  4. The total height of the ship above water

Explanation

Draught is the vertical distance between the lowest point of the hull (the keel) and the waterline. It determines the minimum depth of water a vessel needs to float safely. Width is beam and length is length overall.

Question 32General Knowledge / Awareness

Which of the following is the correct sequence of a ship's port and starboard sides when facing the bow?

  1. Port is on the left and starboard on the right Correct answer.
  2. Both port and starboard are on the right
  3. Both port and starboard are on the left
  4. Port is on the right and starboard on the left

Explanation

When facing forward toward the bow, the left side of a vessel is the port side and the right side is the starboard side. This convention is fixed regardless of which way a person on board is facing.

Question 33General Knowledge / Awareness

Which of these is the largest island country in the Indian Ocean?

  1. Mauritius
  2. Maldives
  3. Seychelles
  4. Sri Lanka Correct answer.

Explanation

Sri Lanka is the largest island nation in the Indian Ocean by both land area and population. The Maldives, Mauritius and Seychelles are all considerably smaller island states.

Question 34General Knowledge / Awareness

The Andaman and Nicobar Islands are separated from each other by which channel?

  1. Gulf of Mannar
  2. Palk Strait
  3. Ten Degree Channel Correct answer.
  4. Nine Degree Channel

Explanation

The Ten Degree Channel separates the Andaman group in the north from the Nicobar group in the south, running near the 10° latitude line. The Nine Degree Channel lies further south within the Nicobar group.

Question 35General Knowledge / Awareness

Which of these Indian ports is a natural deep-water harbour on the west coast?

  1. Tuticorin
  2. Kandla
  3. Paradip
  4. Mumbai Correct answer.

Explanation

Mumbai is a natural deep-water harbour formed by the sheltered bay between the mainland and the harbour wall of islands. Its depth and shelter made it a major port without extensive dredging.

Question 36General Knowledge / Awareness

What is the primary function of a ship's radar?

  1. To measure wind speed and direction
  2. To detect objects and measure their range and bearing Correct answer.
  3. To generate electrical power for the engines
  4. To purify seawater for drinking

Explanation

Radar transmits radio pulses and analyses returning echoes to detect objects and determine their distance and direction. It is a key collision-avoidance and navigation aid. Water purification, power generation and wind measurement are done by other equipment.

Question 37General Knowledge / Awareness

Which of these is the correct expansion of the term 'GPS' used in navigation?

  1. General Positioning System
  2. Global Positioning System Correct answer.
  3. Geographic Position Standard
  4. Global Position Sensor

Explanation

GPS stands for Global Positioning System, a satellite-based network that provides position and time information to receivers worldwide. The other expansions are invented and do not describe the system.

Question 38General Knowledge / Awareness

A vessel is steering a course of 090 degrees. In which direction is it heading?

  1. North
  2. West
  3. South
  4. East Correct answer.

Explanation

Compass bearings are measured clockwise from north, so 000° is north, 090° is east, 180° is south and 270° is west. A course of 090° therefore points due east.

Question 39General Knowledge / Awareness

If a ship sails due east for 6 nautical miles and then due north for 8 nautical miles, what is its straight-line distance from the starting point?

  1. 10 nautical miles Correct answer.
  2. 14 nautical miles
  3. 48 nautical miles
  4. 2 nautical miles

Explanation

The two legs form a right triangle with sides 6 and 8, so the direct distance is found using the Pythagorean theorem: the square root of (36 + 64) equals 10. The straight-line distance is thus 10 nautical miles.

Question 40General Knowledge / Awareness

What does the Beaufort scale measure?

  1. Strength of ocean currents
  2. Wind speed and its effect at sea Correct answer.
  3. Depth of the ocean floor
  4. Salinity of seawater

Explanation

The Beaufort scale describes wind strength in numbered forces based on observed effects on the sea surface and objects. It ranges from calm to hurricane force. Depth, salinity and current strength are measured by other means.

Question 41General Knowledge / Awareness

Which of these cloud types is most commonly associated with thunderstorms and heavy squalls?

  1. Altocumulus
  2. Cumulonimbus Correct answer.
  3. Cirrus
  4. Stratus

Explanation

Cumulonimbus clouds are towering convective clouds that produce thunderstorms, heavy rain, hail and squalls. Cirrus are high wispy clouds, stratus are low flat layers, and altocumulus are mid-level patches.

Question 42General Knowledge / Awareness

Which gas is most abundant in the Earth's atmosphere?

  1. Argon
  2. Carbon dioxide
  3. Nitrogen Correct answer.
  4. Oxygen

Explanation

Nitrogen makes up roughly 78 per cent of the atmosphere by volume, making it the most abundant gas. Oxygen is about 21 per cent, while carbon dioxide and argon are present only in small amounts.

Question 43General Knowledge / Awareness

The 'Coriolis effect' causes freely moving objects in the Northern Hemisphere to be deflected toward which direction?

  1. Their right Correct answer.
  2. Straight down
  3. Their left
  4. Straight up

Explanation

Because of the Earth's rotation, moving air and water are deflected to the right of their path in the Northern Hemisphere and to the left in the Southern Hemisphere. This shapes wind patterns and ocean currents.

Question 44General Knowledge / Awareness

Which of these is the currency of Japan?

  1. Ringgit
  2. Yuan
  3. Won
  4. Yen Correct answer.

Explanation

The yen is the official currency of Japan. The won belongs to South Korea, the yuan to China, and the ringgit to Malaysia.

Question 45General Knowledge / Awareness

Which country is the largest producer of merchant ships by tonnage in recent decades?

  1. Canada
  2. Brazil
  3. China Correct answer.
  4. Norway

Explanation

China, along with South Korea and Japan, dominates global shipbuilding, with China becoming the largest producer of merchant tonnage. Brazil, Canada and Norway build ships but at far smaller volumes.

Question 46General Knowledge / Awareness

The Suez Canal connects the Mediterranean Sea to which body of water?

  1. Caspian Sea
  2. Persian Gulf
  3. Black Sea
  4. Red Sea Correct answer.

Explanation

The Suez Canal links the Mediterranean Sea with the Red Sea through Egypt, allowing ships to avoid sailing around Africa. The other seas are connected by different routes or are landlocked.

Question 47General Knowledge / Awareness

The Panama Canal primarily shortens the sea route between which two oceans?

  1. Atlantic and Pacific Correct answer.
  2. Indian and Pacific
  3. Atlantic and Indian
  4. Pacific and Arctic

Explanation

The Panama Canal cuts across the Isthmus of Panama, connecting the Atlantic and Pacific Oceans and removing the need to round South America. It does not link the Indian or Arctic Oceans.

Question 48General Knowledge / Awareness

Which of these international conventions is chiefly concerned with the prevention of pollution from ships?

  1. STCW
  2. SOLAS
  3. COLREG
  4. MARPOL Correct answer.

Explanation

MARPOL is the International Convention for the Prevention of Pollution from Ships, covering oil, chemicals, sewage, garbage and air pollution. SOLAS deals with safety, STCW with training standards, and COLREG with collision regulations.

Question 49General Knowledge / Awareness

Under the international collision regulations, when two power-driven vessels meet head-on, what action must each take?

  1. The smaller vessel gives way
  2. Both alter course to port
  3. Both alter course to starboard Correct answer.
  4. Both stop their engines immediately

Explanation

In a head-on situation, each power-driven vessel must alter course to starboard so that they pass port side to port side. Neither vessel has the right of way in this situation; both must act.

Question 50General Knowledge / Awareness

What is the main advantage of a double-hulled tanker over a single-hulled one?

  1. It requires no ballast water at all
  2. It can carry cargo without any crew
  3. It reduces the risk of oil spillage after grounding or collision Correct answer.
  4. It travels much faster than single-hulled ships

Explanation

A double hull places an empty space between the cargo tanks and the sea, so a grounding or collision is less likely to breach the cargo tank and cause a spill. Speed, ballast needs and crewing are unaffected by hull configuration.