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Aptitude - Clock Online Quiz
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.
Q 1 - The two hands of a clock will be together between h and (h+1) o'clock at
A - (60/11)h minutes past h o' clock
B - (50/11)h minutes past h o' clock
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.
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?
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.
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 - 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?
Answer : D
Explanation
Angle followed by the hour hand in 6 hours = (360/12*6)°= 180°
Q 6 - At what edge the hands of a clock are slanted at 15 min. past 5?
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
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?
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?
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 - At what time somewhere around 5.30 and 6 will the hand of a clock be at right Points?
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.