Aptitude - Clock Online Quiz


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Following quiz provides Multiple Choice Questions (MCQs) related to Clock. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Answer : A

Explanation

At h o' clock, the minutes hand is 5 h minute spaces
behind the hour hand.
The minute hand gains 55 min spaces in 60 mins.

∴ The minute hand will gain 5h minute spaces
in 60/55 * 5h = 60h/11 minutes.

∴ The two hands will be together between
'h' and 'h+1' o' clock at (60/11)h minutes h o' clock.

Q 2 - At what time between 4 and 5 o' clock are the hands of a clock 3 minutes apart?

A - 45.09 minutes past 4 o' clock.

B - 35.09 minutes past 4 o' clock.

C - 25.09 minutes past 4 o' clock.

D - 15.09 minutes past 4 o' clock.

Answer : C

Explanation

At 4 o' clock, the minute hand is 20 min spaces behind the hour hand.
There are two possible cases for the given scenario.

Case I ? Minute hand is 3 min spaces behind the hour hand.
In this case the minute hand has to gain (20-3) = 17 minutes.
= (60/55) * 17 
= (12/11) * 17
= 204/11

∴ The minute hand will be 3 minute apart at 204/11 min or 18.54 min past 4.

Case II ? Minute hand is 3 minutes spaces ahead of the hour hand. 
In this case the minute hand has to gain (20+3) = 23 minute spaces.
= (60/55)*23
= (12/11)*23
= 276/11
= 25.09 minutes

∴ The hands will be 3 minute apart at 25.09 minutes past 4 o' clock.

Q 3 - A watch which gains uniformly in 5 min slows at 8 o? clock in the morning on Sunday and it is 5 min 48 sec fast at 8 pm on the following Sunday. When was it correct?

A - 7:20PM on Tue

B - 6:20PM on Wednesday

C - 7:20 PM on Wed

D - None of these

Answer : C

Explanation

Time from 8 am on Sunday to 8 pm on following Sunday = 7 days 12 hours
= 180 hours

∴ The watch gains (5 + 29/5) min or 54/5 min in 180 hours.

Now 54/5 minutes are gained in 180 hours.

∴ 5 minutes are gained in [180*(5/54)*5] hour = 83 hr 20 min
= 3 days 11 hours 20 minutes
Watch is correct 3 days 11 hours 20 minutes
after 8 AM of Sunday i.e. 7:20PM on Wednesday.

Q 4 - Find the angle between the two hands of a clock at 5:30 PM.

A - 15°

B - 20°

C - 25°

D - None of these

Answer : A

Explanation

At 5:30 PM, the minute hand is at 6 and hour hand is past 5 but behind 6.
In 60 minutes, the hour hand moves ahead by 30°.
∴ In 30 minutes, hour hour hand moves ahead by
= 30*(30/60)°
= 15°

Angle between 5 and 6 hour spaces = 30°.
Hence, angle between the two hands at 5:30 PM = (30 - 15) = 15°.

Q 5 - At 3.40, the hour hand and the moment hand of a clock from a point of

A - 120°

B - 125°

C - 130°

D - 135°

Answer : C

Explanation

Angle followed by hour hand in 12 hours= 360°
Point followed by hour it in 11/3 hrs. =(360/12*11/3)= 110°
Point followed by moment hand in 60 min. =360°
Point followed by it in 40 min. =(360/60*40) = 240°
∴ Required Angle = (240-110)= 130°

Q 6 - At what edge the hands of a clock are slanted at 15 min. past 5?

A - 117°/2

B - 64°

C - 135°/2

D - 145°/2

Answer : C

Explanation

Angle followed by hour hand in 21/4 hrs.=(360/12*21/4)°315°/2
Edge followed by min. hand in 15 min. =(360/12*15)°= 90°
∴ Required edge = (315/2)°-90°= 135°/2

Q 7 - How commonly in a day, the clock's hands are straight?

A - 22

B - 24

C - 44

D - 48

Answer : C

Explanation

In 12 hours, the hands concur or are in inverse heading 22 times.
∴ In 24 hours, the hands concur or are
in inverse heading 44 Times each day.

Q 8 - How commonly are the hands of a check at right edge in a day?

A - 22

B - 23

C - 44

D - 48

Answer : C

Explanation

In 12 hours, they are at right point 22 times.
∴ In 24 hours , they are at right point 44 times.

Q 9 - At what time somewhere around 7 and 8 o'clock will the hands of a be in the Same straight line at the same time, not together?

A - 5 min. Past 7

B - 57/11 min. past 7

C - 58/11 min. past 7

D - 60/11 min. past 7

Answer : D

Explanation

When the check's hands are in the same straight line however not together. 
they are 30 moment spaces separated.
At 7 o' clock, they are 25 min. space separated.
∴ Minute hand will need to increase just 5 min. spaces.
55 min. spaces are picked up in 60 min.
5 min. spaces are picked up in (60/55*5)min=60/11 min.
∴ Required time=60/11 min. past 7.

Q 10 - A watch picks up 5 sec. in 3 min. was set comfortable am. Toward the evening Of that day, when the watch demonstrated quarter past 4'o clock the Genuine time is:

A - 715/12 min. past 3

B - 4 p.m.

C - 645/11 min. past 3

D - 25/11 min. past 4

Answer : B

Explanation

Time structure 7 a.m. to 4.15 p.m.=9 hrs 15 min=37/4 hrs.
3 min. 5 sec. of this clock=3 min of the right clock.
=> 37/720hrs of this clock =1/2 hrs of the right clock
=> 37/4 hrs of this clock =(1/20*720/37*37/4)hrs of right clock
= 9hrs of the right clock
∴ The right time is 9 hrs after 7 a.m. i.e. 4 p.m.


aptitude_clock.htm

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