Aptitude - Clock Online Quiz


Advertisements


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 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 picks up 10 minutes in 24 hours. What will be the genuine time when the clock shows 1 pm on the taking after?

A - 58 min. past. 12

B - 48 min. past. 12

C - 38 min. past. 12

D - 28 min. past. 12

Answer : B

Explanation

Time from 8 Am on a day to 1p.m on the accompanying day= 29 hrs.
24 hours 10 min. of this clock = 24 hrs. Of the right clock.
145/6 hrs. of this clock= 24 hrs of the right clock.
29 hrs. of this clock = (24*6/145*29)hrs of the right clock.
= 28 hrs 48 min. of right clock.
∴The right time is 28 hrs 48 min. after 8 am
This is 48 min. past. 12.

Q 5 - A clock is begun at twelve. By 10 min. past 5, the hour hand has turned through:

A - 145°

B - 150°

C - 155°

D - 160°

Answer : C

Explanation

Angle followed by hour hand in 12 hrs =360°
Point followed by hour hand in 5 hrs 10 min.
=31/6 = (360/12*31/6)°= 155°

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 - The reflex edge between the hands of a clock at 10.25 is:

A - 180°

B - 385°/2

C - 195°

D - 395°/2

Answer : D

Explanation

Angle followed by hour hand in 125/12 hrs.=(360/12*125/12)°=625°/2
Edge followed by min. hand in 25 min. =(360/60*25°)= 150°
Reflex angle= 360°-(625/2-150)°= 360°-325°/2 = 395°/2

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, in moment, between 3 o'clock and 4 o'clock, both are unnecessary will match one another?

A - 56/11 past 3

B - 136/11 past 3

C - 147/11 past 3

D - 180/11 past 3

Answer : D

Explanation

At 3 o'clock ,the moment hand is 15 min. spaces a section
Structure the hour hand. To be coincident,
it must pick up 15 min. spaces.
55 min. are picked up in 60 min.
15 min. are picked up in (60/55*15)min.=180/11 min.
∴ The hands are correspondent at 180/11 min. past 3.

Q 10 - At what time somewhere around 5.30 and 6 will the hand of a clock be at right Points?

A - 70/11 min. past 5

B - 80/11 min. past 5

C - 40 min. past 5

D - 45 min. past 5

Answer : B

Explanation

At 5 o'clock, the hands are 25 min. space separated.
To be at right edges and
that too somewhere around 5.30 and 6,the moment hand needs to increase
(25+15)=40 min. spaces.
55 min. space are gained in 60 min.
40 min. space are picked up in(60/55*40)min.=80/11 min.
∴ Required time =80/11 min. past 5.


aptitude_clock.htm

Advertisements