# 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 - How many times do the hands of a clock point towards each other in a day?

A - 24

B - 20

C - 12

D - 22

### Explanation

In 12 hours the hands of a clock point towards each other 11 times then in a day they will point towards each other 22 times.

Q 2 - If a clock started at noon, then the angle turned by hour hand at 3.45 pm is?

A - 104$\frac{1}{2}^{\circ}$

B - 117$\frac{1}{2}^{\circ}$

C - 97$\frac{1}{2}^{\circ}$

D - 112$\frac{1}{2}^{\circ}$

### Explanation

3 + $\frac{45}{6}$ = (3 + $\frac{3}{4}$)×30 = 112$\frac{1}{2}^{\circ}$

Q 3 - Four bells ring at interval of 30 min, 1 hrs, 1$\frac{1}{2}$hrs, 1 hrs and 45 min respectively. All the bell rings simultaneously at 12 noon they will again ring simultaneously at.

A - 12 mid night

B - 7.00 am

C - 6.00 am

D - 9.00 am

### Explanation

L.C.M of 30, 60, 90 and 105 =1260 hence all the bells ring after 1260 min i.e at 9 am

Q 4 - At what time after 5 Oclock hour hand and the minute hand are at right angle for the first time?

A - 5 hrs 43$\frac{7}{11}$ min

B - 5 hrs 40$\frac{7}{11}$ min

C - 5 hrs 42$\frac{7}{11}$ min

D - 5 hrs 41$\frac{7}{11}$ min

### Explanation

(5n + 15) × $\frac{12}{11}$; n = 5

$\frac{480}{11}$ = 43$\frac{7}{11}$

Q 5 - In a period of 12 hours, how many times the hands are at right angle to each other?

A - 22 times

B - 20 times

C - 18 times

D - 24 times

### Explanation

The hands are at right angle to each other 2 times in each hour

So, In 12 hour there are 11 intervals, therefore hands will be at right angle 22 times in 12hrs.

Q 6 - At what time between 10 and 11 Oclock the two hands of a clock be coincide together?

A - 53$\frac{6}{11}$ min past 10

B - 54$\frac{6}{11}$ min past 10

C - 55$\frac{6}{11}$ min past 10

D - 57$\frac{6}{11}$ min past 10

### Explanation

$\frac{60n}{11}$ = $\frac{60 \times 10}{11}$ = 54$\frac{6}{11}$

Q 7 - How much time does a clock gain if it coincide per 62 min in a day?

A - 80$\frac{2}{341}$

B - 81$\frac{2}{341}$

C - 82$\frac{2}{341}$

D - 83$\frac{2}{341}$

### Explanation

($\frac{720}{11}$ - x) × ($\frac{60 × 24}{x}$); given x = 62 then 80$\frac{2}{341}$

Q 8 - What is the angle between two hands of a clock when time is 10.20 O`clock?

A - 150o

B - 180o

C - 170o

D - 145o

### Explanation

Angle traveled by minute hand in 20 minute = 6 + 20 = 120o

Also angle travelled by hour hand = $\frac{1}{2}$ × 20 = 10o

Therefore required angle = (60 - 10) + 120 = 170o

Q 9 - Calculate the time from 10.15 a.m to 11.30 p.m on Wednesday?

A - 13 hrs 30 min

B - 13 hrs 25 min

C - 13 hrs 20 min

D - 13 hrs 15 min

### Explanation

Total hour = 11.30 – 10.15 = 1.15

12.00 + 1.15 = 13 hrs 15 min.

(5n ± 15) × $\frac{12}{11}$; here n = 7
Then, $\frac{600}{11}$ min past 7 and $\frac{240}{11}$ min past 7