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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 - At what time between 2 and 3 o' clock will the hands of a clock be together?
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?
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 - 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?
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 - 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 - A clock is begun at twelve. By 10 min. past 5, the hour hand has turned through:
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 - The point between the moment hand and the hour hand of a clock At the point when the time is 8.30, is:
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°
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.
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?
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?
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.