Quantitative Aptitude · Reasoning

Time and Clocks

491 Questions

Time and clocks problems evaluate quantitative aptitude by testing concepts on clock gains, losses, and relative speeds of hands. Questions also cover global time zones and standard time calculations. These logical reasoning topics frequently appear in SSC and banking exams.

Clock gain or lossTime zonesAngle between handsStandard time calculationPrecise time measurement

Time and Clocks Questions

Multiple choice biology transportation in plants and circulation in animals heart beat cardiac cycle heart, blood vessels and cardiac cycle

Time interval between DUP and LUBB is ______ coincide with _____

  1. $0.3$ sec, ventricular systole
  2. $0.5$ sec, joint diastole and atrial systole
  3. $0.4$ sec, joint diastole
  4. $0.1$ sec, atrial systole
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

DUP (second heart sound, closure of semilunar valves) and LUBB (first heart sound, closure of AV valves) bound the cardiac cycle. The time interval between DUP and the next LUBB corresponds to joint diastole and atrial systole, lasting approximately 0.5 seconds in a standard 0.8-second cardiac cycle.

Multiple choice roman numbers and numbers upto hundred roman numerals knowing our numbers maths

The time shown when the long hand is at 12 and short hand is at 11 it

  1. XII

  2. X

  3. XI

  4. XXI
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Time shown by the clock is $11$ o'clock.

Converting it to Roman Number by using:

The Roman numerals are represented by the following letters:

$I = 1$

$V = 5$

$X = 10$

$L = 50$

$C = 100$

$D = 500$

$M = 1000$

If a numeral is followed by another numeral of lower denomination, the two are added together;

if it is preceded by one of lower denomination, the smaller numeral is subtracted from the greater.

$\therefore  11 = 10+1=XI$

Multiple choice maths parts and whole multiplication of a fraction multiplication of a fractions multiplication of fraction finding the whole when a fraction is given

Veronica can type 28 words per minute. At this rate, how many words can Veronica type in $\displaystyle 5 \frac{1}{2}$ minutes ?

  1. 154

  2. 156

  3. 159

  4. 162
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Veronica can type words in $1$ minute $=28$.


Veronica can type words in $5\dfrac{1}{2}$ minutes
$=5\dfrac{1}{2}\times 28$
$=154$

Hence, this is the answer.

Multiple choice maths proofs in mathematics implications principle of mathematical induction different forms of theoretical statements

A clock is started at noon. By 10 min past 5, the hour hand has turned through

  1. $145^{o}$
  2. $150^{o}$
  3. $155^{o}$
  4. $160^{o}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Angle traced by hour hand in 12 h = $360^{o}$

Angle traced by hour hand in 5 h 10 min i.e., $\dfrac{31}{6} h$ $\implies (\dfrac{360}{12} \times \dfrac{31}{6})^{o}$ = $155^{o}$

Multiple choice maths calculations and mental strategies 1 equations from statements forming equations from statements writing mathematical statements

A clock is set right at $8:00\ a.m$. The clock gains $10$ minutes in $24$ hours. What will be the right time when this clock indicates $1\ p.m$ on the following day?

  1. $11.40\ p.m$
  2. $12:00\ p.m$
  3. $10:00\ p.m$
  4. $12:48\ p.m$
  5. $None\ of\ these$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The clock gains $10$ mins in $24$ hours,
It will gain 1 min in every $2.4$ hours.
Difference in time the clock indicates=$1$ p.m.-$8$ a.m. (the next day)
=$29$ hours,
Time gained=$\dfrac {29}{2.4}=12$ mins.
Actual time=$12:48$ p.m.

Multiple choice maths ways to multiply and divide mental multiplication multiplication methods multiplication of numbers

Three lightships flash simultaneously at 6;00 a.m. The first lightship flashes every 12 seconds, the seconds lightship every 30 seconds and the third lightship every 66 seconds. At what time will the three lightships next flash together?

  1. 6;09 a.m.

  2. 6:10 a.m.

  3. 6:11 a.m.

  4. 6:12 a.m.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Three lightships flash simultaneously at 6;00 a.m. The first lightship flashes every 12 seconds, the seconds lightship every 30 seconds and the third lightship every 66 seconds. 
Then we take common multiple of 12,30 or 66 
That is $2\times 6\times 5\times 11=660$
So  the three lightships next flash together=660 seconds =$\frac{660}{60}=11$mints
The time next flash is after 11 mints=6.11 A.M 

Multiple choice geography understanding maps maps - our companions maps and its study contour maps and landforms

What was the local time in Tokyo situated at ${139}^{o}{45}^{\prime}$ East longitude, when the president of India was hosting the Indian National Flag in the presence of Japanese prime Minister at $10$ a.m. in New Delhi? The viewer in Japan were watching live telecast of this event.

  1. $6.11$ a.m.
  2. $1.39$ a.m.
  3. $2.49$ a.m.
  4. $1.49$ p.m.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In India, the time of Delhi is calculated by 82°30’ east longitude. Tokyo is situated at 139°45’ East longitude.

So, the difference between the longitudes is 139°45’ – 82°30’ = 57°15. So, the time difference between Delhi and Tokyo is 57°×4 minute.

= 228 min. (as 1° longitude is equal to 4 min.)

= 3 hrs. 48 min

Time in japan is 3 hrs. 48 min ahead and hence the time is 1.48 pm

Multiple choice

What is the time lag from Arunachal Pradesh to Gujarat.

  1. 2 Hours

  2. 1/2 Hours

  3. 4 Hours

  4. 3 1/2 Hours
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The longitudinal difference between Arunachal Pradesh and Gujarat is about 30 degrees. Since the Earth rotates 1 degree every 4 minutes, the time lag is approximately 120 minutes, or 2 hours.