Water Transport GK MCQ Questions on ‘Boat’. Here we have given total 15 Quiz, very important for students.
Boat
1.) What is the primary differentiation between a boat and a raft?
A.) Size
B.) Structure
C.) Material
D.) Purpose
Answer: B.) Structure
Explanation: A boat obtains its buoyancy by excluding water with a waterproof layer, such as planks of a wooden hull or hide covering. In contrast, a raft is buoyant because it joins together components that are themselves buoyant, like logs or bundles of reeds.
2.) When did the earliest boats, considered as rafts and set sail?
A.) 10,000 years ago
B.) 20,000 years ago
C.) 50,000-60,000 years ago
D.) 100,000 years ago
Answer: C.) 50,000-60,000 years ago
Explanation: Between 50,000 and 60,000 years ago, the earliest boats, considered as rafts and it is reported that it had been used for excursions such as Australia’s colonization.
3.) What is the basic structural difference between a boat and a raft?
A.) Buoyancy
B.) Material
C.) Size
D.) Flow-through structure
Answer: D.) Flow-through structure
Explanation: A main difference between a boat and a raft that, a raft has a “flow-through” structure, allowing waves to pass through it, while a boat obtains buoyancy by excluding water with a waterproof layer.
4.) What is the main function of lifelines on a boat?
A.) Structural support
B.) Buoyancy
C.) Safety
D.) Propulsion
Answer: C.) Safety
Explanation: Lifelines on a boat are often connected to stanchions, bulwarks, or gunnels and serve as safety measures to prevent people from falling overboard.
5.) What is the main structural component of a boat that provides both capacity and buoyancy?
A.) Deck
B.) Keel
C.) Bulkhead
D.) Hull
Answer: D.) Hull
Explanation: The hull is the main, and in some cases only, structural component of a boat, providing both capacity and buoyancy.
6.) What boat construction method uses thin strips of wood layered over a form, coated with resin, and mechanically fastened or stabilized until the resin sets?
A.) Cold molding
B.) Fiberglass
C.) Ferro-cement
D.) Plywood shaping
Answer: A.) Cold molding
Explanation: Cold molding is a modern construction method using thin strips of wood layered over a form, coated with resin, and either mechanically fastened or stabilized until the resin sets.
7.) What material became popular for boat construction around the mid-20th century, known for its strength, resistance to rust, and susceptibility to structural degradation from sunlight and temperature extremes?
A.) Steel
B.) Fiberglass
C.) Aluminum
D.) Plywood
Answer: C.) Aluminum
Explanation: The mid-1900s saw the rise in popularity of aluminum boat building because of its strength, resistance to corrosion, and less weight than steel.
8.) What propulsion method is not mentioned in the given content as a means of boat propulsion?
A.) Engine
B.) Wind
C.) Solar power
D.) Man
Answer: C.) Solar power
Explanation: Solar power is not mentioned as a means of boat propulsion in the given content.
9.) Which classification under the EU’s Recreational Craft Directive permits a boat to safely navigate any waters?
A.) Class A
B.) Class B
C.) Class C
D.) Class D
Answer: A.) Class A
Explanation: Class A under the EU’s Recreational Craft Directive permits a boat to safely navigate any waters.
10.) What is the Plimsoll line used for in commercial vessels?
A.) Navigation
B.) Structural support
C.) Buoyancy
D.) Preventing overloading
Answer: D.) Preventing overloading
Explanation: The Plimsoll line was introduced to prevent overloading in commercial vessels, ensuring they are correctly loaded to be safe.
11.) What is the primary function of the keel in a boat’s structure?
A.) Propulsion
B.) Structural support
C.) Buoyancy
D.) Navigation
Answer: B.) Structural support
Explanation: The keel in a boat’s structure serves as the “backbone,” providing lengthwise structural support to which the perpendicular frames are fixed.
12.) According to EU classification, what does Class C permit a boat to do?
A.) Safely navigate any waters
B.) Limited to offshore navigation
C.) Limited to inshore (coastal) navigation
D.) Limited to rivers and canals
Answer: C.) Limited to inshore (coastal) navigation
Explanation: Class C under the EU’s Recreational Craft Directive limits a boat to inshore (coastal) navigation.
13.) What were the earliest boats likely made of until the mid-19th century?
A.) Fiberglass
B.) Steel
C.) Aluminum
D.) Natural materials, primarily wood
Answer: D.) Natural materials, primarily wood
Explanation: Up to the middle of the nineteenth century, most boats were constructed from natural materials, mostly wood.
14.) What boat construction method involves shaping thin sheets of plywood over a disposable male mold and coating them with epoxy?
A.) Cold molding
B.) Fiberglass
C.) Plywood shaping
D.) Ferro-cement
Answer: C.) Plywood shaping
Explanation: Plywood shaping is a boat construction method that involves shaping thin sheets of plywood over a disposable male mold and coating them with epoxy.
15.) What determines a boat’s ability to displace its weight in water and stay balanced above and below the surface?
A.) Buoyancy
B.) Keel
C.) Propulsion
D.) Plimsoll line
Answer: A.) Buoyancy
Explanation: A boat displaces its weight in water, and buoyancy ensures that the volume of the hull drawn below the waterline increases to keep the balance above and below the surface equal.