Helicopters are very different from airplanes. They can do three things that airplanes cannot do. First, when airplanes move upward, they must also move forward, but helicopters can move straight up without moving ahead. Second, helicopters can fly backward, which airplanes cannot do. Third, helicopters can use their rotors to hover in the air, which is impossible for airplanes. Helicopters can perform actions that airplanes cannot, they are used for different tasks. Since, helicopters can take off without moving forward, they do not need a runway for take off. They are used in congested areas where there is no room for airplanes or in isolated areas, which do not have airports. Because they can hover, they are used on firefighting missions to drop water on fires. They are used in logging operations to lift trees out of forests. Helicopters are used as air ambulances to airlift patients out of situations, which are difficult to reach by conventional ambulances. The police used helicopters to follow suspects on the ground or to search for cars on the ground. Of course, helicopters have military uses because of their design and capabilities.
The word 'congested' in the passage means
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- the place is roomy
- the place has no place
- the place can be accessed by police vans
- the place has so much of smoke due to fire
The Correct Option is B
Solution and Explanation
Congested means overcrowded or packed.
Step 2: Detailed Explanation:
In the passage, congested areas are described as having no room for airplanes, meaning overcrowded.
Step 3: Final Answer:
The place has no place (crowded).
A helicopter can hover while an airplane cannot, according to the passage. 'Hover' in the passage means
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- stay at one place in the air
- move straight up in the air
- go backward in the air
- fly sideways
The Correct Option is A
Solution and Explanation
Hover means to remain stationary in the air.
Step 2: Detailed Explanation:
Helicopters can hover, meaning they can stay at one fixed point in the air.
Step 3: Final Answer:
Stay at one place in the air.
Point out the grammatical category of the word 'perform' in the passage.
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- Noun
- Verb
- Adverb
- Helping verb
The Correct Option is B
Solution and Explanation
Identify part of speech.
Step 2: Detailed Explanation:
'Perform' is an action word meaning to carry out or execute.
Step 3: Final Answer:
Verb.
Why is a helicopter used as an ambulance?
Show Hint
- Its movement can be manoeuvred easily
- It crosses all difficulties of traffic
- It reaches the inaccessible places easily
- It can fire-fight
The Correct Option is C
Solution and Explanation
Read passage for reason.
Step 2: Detailed Explanation:
Passage states helicopters are used as air ambulances to airlift patients from situations difficult to reach by conventional ambulances.
Step 3: Final Answer:
It reaches inaccessible places easily.
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