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

Q 1 - At what time between 2 and 3 o' clock will the hands of a clock be together?

A - 120/11 min past 2

B - 10 min past 2

C - 11 min past 2

D - None of these

Answer : A

Explanation

At 2 o' clock, the hour hand is at 2 and minute hand is at 12
i.e. they are 10 min spaces apart.
The minute hand has to gain 10 minute spaces
over the hour hand to be together.

The minute hand gains 55 mins in 60 mins.
∴ It will gain 10 mins in 60/55 * 10 min
= 120/11 minutes.

Hence the hands will coincide at 120/11 minutes past 2.

Q 2 - At what time between 4 and 5 o' clock will the hands of a clock be at right angle?

A - 320/11 min past 4

B - 420/11 min past 4

C - 120/11 min past 4

D - 220/11 min past 4

Answer : B

Explanation

At 4 o' clock, the minute hand is 20 minute spaces behind the hour hand.
Now, when the two hands are at right angles, they are fifteen min spaces
apart. So, they are at right angles in following two cases.

Case I ? When the minute hand is 15 min spaces behind the hour hand.
In this case, min hand will have to gain (20-15) = 5 min spaces.
= (60/55)*5 = 60/11
∴ They are at right angle at 60/11 minutes past 4.
Case II ? When the minute hand is 15 minute spaces ahead of the hour hand.
In this case the minute hand will have to gain (20+15) = 35 min spaces.
= (60/55)*35 = 420/11 min
∴ They are at right angles at 420/11 min
past 4.

Q 3 - Find the angle between the two hands of a clock at 15 minutes past 5 o' clock.

A - 30°

B - 35°

C - 67.5°

D - 37.5°

Answer : C

Explanation

At 15 minutes past 5 o' clock, the minute hand is at 3
and hour hand is slightly ahead of 5.

In 60 minutes, the hour hand moves ahead by 300
∴ In 15 minutes, the hour hand moves ahead by = (30/60)*15
= 7.5°

Angle between 3 and 5 hour spaces = 60°.
∴ The total angle between the two hands at
 15 minutes past 5 o' clock = 60 + 7.5 = 67.5°

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 - An exact check demonstrates 8 o'clock in the morning . through what number of degrees will the hour hand pivot when the clock indicates 2 O' check toward the evening?

A - 144°

B - 150°

C - 168°

D - 180°

Answer : D

Explanation

Angle followed by the hour hand in 6 hours
= (360/12*6)°= 180°

Q 6 - The point between the moment hand and the hour hand of a clock At the point when the time is 8.30, is:

A - 80°

B - 75°

C - 60°

D - 105°

Answer : B

Explanation

Angle followed by hour hand in 17/2hrs= (360/12*17/2)°= 255°
Point followed by min. hand in 30 min. = (360/60*30)°= 180°
∴ Required Angle = (255-180)°=75°

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 - How much does a watch lose every day, if its hands agree each 64 Min?

A - 360/11 min.

B - 401/11 min.

C - 90 min

D - 96 min.

Answer : B

Explanation

55 min. spaces are secured in 60 min.
60 min. spaces are secured in (60/55*60) min. = 720/11 min.
Misfortune in 64 min. = (720/11-64)= 16/11 min.
Misfortune in 24 hrs =(16/11*1/64 *24*60)min.=400/11 min.

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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