Exams


Q:

RADAR is used for

A) detecting and locating the position of objects such as Aeroplanes B) locating submerged submarines
C) locating geostationary satellites D) receiving a signals in a radio receiver
 
Answer & Explanation Answer: A) detecting and locating the position of objects such as Aeroplanes

Explanation:

RADAR - RAdio Detection And Ranging.

A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. 

 

Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.

 

Radio waves from the transmitter reflect off the object and return to the receiver, giving information about the object's location and speed.

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Q:

Consider the argument and decide which of the given assumptions is/are implicit.

 

Argument :


With immediate effect, the government asked to shut down all the schools for one week in the region due to severe cold wave.

 

Assumptions:

 

1. The cold wave may continue for one week.

 

2. Concerned parents may not allow their children to attend the school after one week also.

 

 

A) Only assumption 1 is implicit B) Both 1 and 2 are implicit
C) Only assumption 2 is implicit D) Neither 1 nor 2 is implicit
 
Answer & Explanation Answer: A) Only assumption 1 is implicit

Explanation:
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Q:

Who was named as " Wisden’s Leading Cricketer in the World " for 2016 ?

A) M S Dhoni B) Musharaf Ali
C) Virat Kohli D) Ashwin
 
Answer & Explanation Answer: C) Virat Kohli

Explanation:

i. India’s Virat Kohli was named Wisden’s Leading Cricketer in the World for 2016.

ii. Kohli had also won the prestigious ‘Polly Umrigar award’ presented to the ‘International Cricketer of the Year’ at the BCCI Annual Awards.

iii. Kohli was additionally declared Wisden India Almanack’s Cricketer of the Year for the second time in its 2017 edition.

 

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Q:

A man sell 35 waffers for Rs. 15 each and loses Rs. 40.4. If he sells 35 waffers for Rs. 18, how much does he loss or gain ?

A) Rs. 64 B) Rs. 52
C) Rs. 72 D) Rs. 55
 
Answer & Explanation Answer: A) Rs. 64

Explanation:

Given Loss = Rs. 40.4
We know loss = cost price - selling price
40.4 = CP - 35(15)
=> CP = 40.4 + 525
=> CP = Rs. 565.4
Now the New selling price of waffer is Rs. 18
=> SP = 35(18) = 630
Now Gain = SP - CP = 630 -565.4 = Rs. 64.6.

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Q:

Plants that grow in Saline Water are called

A) Sciophytes B) Bryophytes
C) Halophytes D) Hydrophytes
 
Answer & Explanation Answer: C) Halophytes

Explanation:

Plants that grow in Saline Water are called Halophytes.

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Q:

Why are hydrocarbons insoluble in water?

Answer

We know that polar substances are soluble in polar solvents and non polar substances are soluble in non-polar solvents only. Here the hydrocarbons are non-polar molecular substances and water is a polar solvent. So water can't dissolve hydrocabons.


 


Hence, as hydrocarbons are non-polar substances, they are insoluble in water as it is a highly polar solvent. 

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Q:

Antonym of Sober?

A) not affected by alcohol B) Sensible
C) Serious D) emotional
 
Answer & Explanation Answer: D) emotional

Explanation:

Sober means not afected by alcohol, clear headed, very serious, sensible,...

 

Antonyms of Sober are :: light hearted, frivolous, sensational, emotional,...

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Q:

A definition of formal poetry is verse that

A) is written in blank verse. B) sticks to certain traditional patterns.
C) uses figurative language. D) has no rhyme scheme.
 
Answer & Explanation Answer: B) sticks to certain traditional patterns.

Explanation:
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