89
Q:

A watch which gains 5 seconds in 3 minutes was set right at 7 a.m. In the afternoon of the same day, when the watch indicated quarter past 4 o'clock, the true time is:

A) 4pm B) 5pm
C) 6pm D) 7pm

Answer:   A) 4pm



Explanation:

Time from 7 am to 4.15 pm  = 9 hrs 15 min = 374 hrs 

 

3 min. 5 sec. of this clock = 3 min. of the correct clock. 

 

Now 3min.5sec. is37720 hrs of this clock = 3 min.is120 hrs of the correct clock 

 

374 hrs of clock = 120×72037×374 hrs of the correct clock. 

 

  = 9 hrs of the correct clock. 

 

 The correct time is 9 hrs after 7 am. i.e., 4 pm.

Q:

What will be the measure of the acute angle formed between the hour hand and the minute hand at 6:43 a.m.?

A) 21.5 deg B) 78 deg
C) 56 deg D) 56.5 deg
 
Answer & Explanation Answer: D) 56.5 deg

Explanation:
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6 1155
Q:

A watch gains 5 seconds per minute and was set right at 6 A.M. What would be the time shown on the watch when the correct time is 2 PM?

A) 2.20 PM B) 2.50 PM
C) 2.30 PM D) 2.40 PM
 
Answer & Explanation Answer: D) 2.40 PM

Explanation:
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6 1455
Q:

What would be the smaller of the two angles formed by the hour hand and the minute hand at 3:47 p.m?

A) 168.5 deg B) 162 deg
C) 166.5 deg D) 165 deg
 
Answer & Explanation Answer: A) 168.5 deg

Explanation:
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4 1390
Q:

A watch shows 6 p.m. where the hour hand points east. In which direction is the minute hand facing when the time is 9.15 p.m?

A) West B) South
C) East D) North
 
Answer & Explanation Answer: D) North

Explanation:
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5 1125
Q:

What fraction of 2 hours is 12 seconds?

A) 1/200 B) 1/300
C) 1/400 D) 1/600
 
Answer & Explanation Answer: D) 1/600

Explanation:
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2 1144
Q:

Three clocks are designed to alarm in every hour, two hours and three hours respectively. If they all alrmed together three hours before, then after how many hours will they next alarm together?

A) 3 hours B) 6 hours
C) 2 hours D) 1 hour
 
Answer & Explanation Answer: A) 3 hours

Explanation:
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2 1120
Q:

In a week, how many times are the hands of a clock at right angles with each other?

A) 308 B) 44
C) 24 D) 154
 
Answer & Explanation Answer: A) 308

Explanation:
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4 1017
Q:

What will be the acute angle between the hour-hand and the minute -hand at 2:13 p.m?

A) 16.5 deg B) 18 deg
C) 13.5 deg D) 11.5 deg
 
Answer & Explanation Answer: D) 11.5 deg

Explanation:
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7 1379