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 - The minute hand of a clock overtakes the hour hand at interval of 65 minutes of the correct time. How much a day does the clock gain or lose?

A - 10.20 minutes in 24 hours

B - 10.25 minutes in 24 hours

C - 10.23 minutes in 24 hours

D - None of these

Answer : C

Explanation

In a correct clock, the minute hand gains 55 min spaces
over the hour hand in 60 minutes.
To be together again, the minute hand must gain 60 minutes over the hour hand.

55 min are gained in 60 min
60 min are gained in (60/55)*60 = 720/11

But they are together after 65 min.
∴Gain in 65 min = (720/11 ? 65) = 5/11

Gain in 24 hours = [5/11 * (60*24)/65] min
= 440/43 min
= 10.23 minutes.

∴The clock gains 10.23 minutes in 24 hours.

Q 4 - A clock is set comfortable Am. The check loses 16 minutes in 24 hours. What will be the genuine time when the clock shows 10 pm on fourth day?

A - 11 pm

B - 12 pm

C - 11 am

D - 12 pm

Answer : A

Explanation

Time from 5am on a day to 10 pm on fourth day= 89 hours
Presently 23hrs. 44min. of this clock= 24 hours of right clock.
∴ 356/15 hrs of this clock= (24*15/356*89) hrs. Of right clock.
= 90 hrs of right clock.
Along these lines, the right time is 11 pm.

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 do the hands of a check agree in a day?

A - 20

B - 21

C - 22

D - 24

Answer : C

Explanation

The hands of a check match 11 times in at regular intervals.
∴ The hands concur 22 times in a day.

Q 8 - What number times in a day, are the hands of a check in straight line however in bearing?

A - 22

B - 24

C - 44

D - 48

Answer : A

Explanation

The hands of a check point in inverse headings 11 times in every 12 Hours.
(since somewhere around 5 and 7 they point in inverse headings at 6 o'clock just)
So in a day, the hands point in the inverse headings 22 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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