www.edusaathi.com Clocks Total Time: 90 mins Practise Exercise no. 1 1. An accurate clock shows 8 o'clock in the morning. Through how may degrees will the hour hand rotate when the clock shows 2 o'clock in the afternoon? a) 144º b) 150º c) 168º d) 180º 2. The reflex angle between the hands of a clock at 10.25 is: a) 180º b) 192 1/2º c) 195º d) 197 1/2º 3. A clock is started at noon. By 10 minutes past 5, the hour hand has turned through: a) 145º b) 150º c) 155º d) 160º 4. At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but, not together? a) 5 min. past 7 b) 5 2/11 min. past 7 c) 5 3/11 min. past 7 d) 5 5/11 min. past 7 5. At what time between 5.30 and 6 will the hands of a clock be at right angles? a) 43 5/11 min. past 5 b) 43 7/11 min. past 5 c) 40 min. past 5 d) 45 min. past 5 6. The angle between the minute hand and the hour hand of a clock when the time is 4.20, is: a) 0º b) 10º c) 5º d) 20º 7. At what angle the hands of a clock are inclined at 15 minutes past 5? a) 58 1/2º b) 64º c) 67 1/2º d) 72 1/2º 8. At 3:40, the hour hand and the minute hand of a clock form an angle of: a) 120° b) 125° c) 130° d) 135° [email protected] Total no. Of Qs: 55 9. The angle between the minute hand and the hour hand of a clock when the time is 8.30, is: a) 80º b) 75º c) 60º d) 105º 10. How many times in a day, are the hands of a clock in straight line but opposite in direction? a) 20 b) 22 c) 24 d) 48 11. At what time between 4 and 5 o'clock will the hands of a watch point in opposite directions? a) 45 min. past 4 b) 40 min. past 4 c) 50 4/11 min. past 4 d) 54 6/11 min. past 4 12. At what time between 9 and 10 o'clock will the hands of a watch be together? a) 45 min. past 9 b) 50 min. past 9 c) 49 1/11min. past 9 d) 48 2/11 min. past 9 13. At what time, in minutes, between 3 o'clock and 4 o'clock, both the needles will coincide each other? a) 5 1/11" b) 12 4/11" c) 13 4/11" d) 16 4/11" 14. How many times do the hands of a clock coincide in a day? a) 20 b) 21 c) 22 d) 24 15. How many times in a day, the hands of a clock are straight? a) 22 b) 24 c) 44 d) 48 16. How many times are the hands of a clock at right angle in a day? a) 22 b) 24 c) 44 d) 48 Page 1 www.edusaathi.com 17. At what time between 4 & 5 will the hands of a watch point in opposite directions? a) 43 min past 4 b) 42 5/11 min past 4 c) 50 4/11 min past 4 d) 40 min past 4 18. At what time between 9 & 10 will the hands of a watch be together? a) 45 min past 9 b) 49 1/11 min past 9 c) 48 min past 9 d) 47 min past 9 19. At what time between 5.30 & 6 will the hands of a watch be at right angle? a) 43 7/11 min past 5 b) 41 2/11 min past 5 c) 42 min past 5 d) 44 1/11 min past 5 20. At what time between 7 & 8 o'clock will the hands of a watch be in the straight line but no together? a) 5 3/11 min past 7 b) 5 5/11 min past 7 c) 5 3/11 min past 7 d) 43min past 7 21. A watch which gains 5 seconds in 3 minutes was set right at 7 a.m. In the afternoon of the same day, when the watch indicated quarter past 4 o'clock, the true time is: a) 59 7/12 min. past 3 b) 4 p.m. c) 58 7/11 min. past 3 d) 2 3/11 min. past 4 22. How much does a watch gain or lose per day, if its hands coincide every 64 minutes? a) 32 8/11 min. b) 36 5/11 min. c) 90 min. d) 96 min. 23. A watch which gains uniformly is 2 minutes low at noon on Monday and is 4 min. 48 sec fast at 2 p.m. on the following Monday. When was it correct? a) 2 p.m. on Tuesday b) 2 p.m. on Wednesday c) 3 p.m. on Thursday d) 1 p.m. on Friday [email protected] 24. Between 4 & 5 O'clock, the time when the hands coincide is: a) 4:21 9/11 b) 4:24 3/11 c) 4:22 d) 4:23 9/11 25. At what angle the hands of a clock are inclined at 15 minutes past 5? a) 58 1/2 degrees b) 64 degrees c) 67 1/2 degrees d) 72 1/2 degrees 26. My watch gains 5 min every hour. How many degrees the second hand moves in every min? a) 360 degrees b) 390 degrees c) 330 degrees d) 370 degrees 27. A clock is set right at 5am the clock loses 16min in 24 hours. What will be the right time when the clock indicates 10am on the 4th day? a) 10.30pm b) 11pm c) 10.45pm d) 11.15pm 28. When the time in the clock is 7.20, then the angle between the hands of the clock is: a) 100 degrees b) 120 degrees c) 90 degrees d) 110 degrees 29. A clock is set right at 8 a.m. The clock gains 10 minutes in 24 hours will be the true time when the clock indicates 1 p.m. on the following day? a) 48 min. past 12 b) 46 min. past 12 c) 45 min. past 12 d) 47 min. past 12 30. At what time between 4 and 5 o'clock will the hands of a watch point in opposite directions? a) 54 past 4 b) 53 7/11 past 4 c) 54 8/11 past 4 d) 54 6/11 past 4 31. A watch which gains 5 seconds in 3 minutes was set right at 7 a.m. In the afternoon of the same day, when the watch indicated quarter past 4 o'clock, the true time is: a) 4pm b) 5pm c) 6pm d) 7pm Page 2 www.edusaathi.com 32. A clock is set right at 5 a.m. The clock loses 16 minutes in 24 hours. What will be the true time when the clock indicates 10 p.m. on 4th day? a) 11pm b) 12pm c) 1pm d) 2pm 33. A watch which gains uniformly is 5 min. slow at 8 o'clock in the morning on Sunday and it is 5 min 48 sec. fast at 8 p.m. on following Sunday. When was it correct? a) 7pm on Wednesday b) 20 min past 7pm on Wednesday c) 15min past 7pm on Wednesday d) 8pm on Wednesday 34. The minute hand of a clock overtakes the hour hand at intervals of 65 minutes of the correct time. How much a day does the clock gain or lose? a) 10 10/143 min b) 10 1/143 min c) 10 20/143 min d) 10 30/143 min 35. At what time between 5.30 and 6 will the hands of a clock be at right angles? a) 43 5/11 min past 5 b) 43 7/11 min past 5 c) 45 min past 5 d) 47 min past 5 36. At what time between 5 and 6 o' clock are the hands of a clock 3 minutes apart? a) 24min b) 12min c) 13min d) 14min a) 360 c) 90 b) 180 d) 60 40. How much does a watch lose per day, if its hands coincide ever 64 minutes? a) 32 8/11 b) 33 8/11 c) 34 8/11 d) 35 8/11 41. The angle between the minute hand and the hour hand of a clock when the time is 8:30 a) 80 Degrees b) 75 Degrees c) 60 Degrees d) 105 Degrees 42. The angle between the minute hand and the hour hand of a clock when the time is 8.30, is: a) 15 b) 30 c) 60 d) 75 43. In every 60 minutes, the minute hand gains -------- minutes on the hour hand. a) 53 b) 54 c) 55 d) 56 44. What time between 4 and 5 o'clock will the hands of a clock be at right angle? a) 3 5/11 b) 4 5/11 c) 5 5/11 d) 6 5/11 45. At what angle the hands of a clock are inclined at 15 minutes past 5? a) 57.5 degrees b) 67.5 degrees c) 77.5 degrees d) 87.5 degrees 37. Find the angle between the hour hand and the minute hand of a clock when the time is 3.25 a) 47.5 degrees b) 57.5 degrees c) 45.5 degrees d) 55.5 degrees 46. When the hands are in the opposite directions, they are ------- minute spaces apart, a) 15 b) 30 c) 60 d) 0 38. The reflex angle between the hands of a clock at 10.25 is a) 197 ½ b) 167 ½ c) 157 ½ d) 187 ½ 47. At what time, in minutes, between 3 o'clock and 4 o'clock, both the needles will coincide each other? a) 11 4/11 b) 13 4/11 c) 15 4/11 d) 16 4/11 39. An accurate clock shows 8 o'clock in the morning. Through how may degrees will the hour hand rotate when the clock shows 2 o'clock in the afternoon? [email protected] 48. At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but, not together? Page 3 www.edusaathi.com a) 5 5/11 min past 7 c) 7 5/11 min past 7 b) 6 5/11 min past 7 d) 8 5/11 min past 7 49. A watch which gains uniformly is 2 minutes low at noon on Monday and is 4 min. 48 sec fast at 2 pm on the following Monday. When was it correct? a) 2 pm on Tuesday b) 2 pm on Wednesday c) 3 pm on Thursday d) 1 pm on Friday 50. At what time between 2 and 3 o'clock will the hands of a clock be together? a) 9 10/11 min past 2 b) 10 10/11 min past 2 c) 11 10/11 min past 2 d) 12 10/11 min past 2 51. When the two hands are at right angles, they are ---------- minute spaces apart, a) 13 b) 14 c) 15 d) 16 52. At 3:40, the hour hand and the minute hand of a clock form an angle of: a) 110 b) 120 c) 130 d) 140 53. At what time between 9 and 10 o'clock will the hands of a watch be together? a) 49 3/11 min past 11 b) 49 1/11 min past 9 c) 45 1/11 min past 9 d) 45 7/11 min past 11 54. The angle between the minute hand and the hour hand of a clock when the time is 4.20, is: a) 0 b) 10 c) 30 d) 60 55. A clock is started at noon. By 10 minutes past 5, the hour hand has turned through a) 145 b) 155 c) 165 d) 175 [email protected] Page 4 Clocks Practise Exercise 1 (Solutions) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. d) d) c) d) b) b) c) c) b) b) d) c) d) c) c) c) c) b) a) b) 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. b) a) b) a) a) b) b) a) a) d) a) a) b) a) b) a) a) a) b) a) 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. b) d) c) c) b) b) a) d) b) b) c) c) b) b) b)
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