Quantitative Aptitude · Reasoning

Time and Clocks

562 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

What is the approximate time range that a Ghati Yantra can measure?

  1. Sunrise to sunset

  2. Noon to midnight

  3. Dusk to dawn

  4. All day and night
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A Ghati Yantra is primarily used to measure time during the daytime, from sunrise to sunset.

Multiple choice

The gnomon is a simple but effective instrument used to measure the time of day. How does the gnomon work?

  1. The length of the shadow cast by the gnomon is proportional to the time of day

  2. The direction of the shadow cast by the gnomon is proportional to the time of day

  3. Both of the above

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Both the length and direction of the shadow cast by the gnomon are proportional to the time of day.

Multiple choice

Which of the following is a unit of time?

  1. Second

  2. Minute

  3. Hour

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

The SI unit of time is the second, but minutes, hours, and days are also commonly used units of time.

Multiple choice

What is the hotel's policy on check-in and check-out times?

  1. Check-in is at 3pm and check-out is at 11am

  2. Check-in is at 12pm and check-out is at 12pm

  3. Check-in is at 2pm and check-out is at 10am

  4. It varies from hotel to hotel
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The hotel's policy on check-in and check-out times can vary from hotel to hotel. Some hotels have a check-in time of 3pm and a check-out time of 11am, while others have a check-in time of 12pm and a check-out time of 12pm.

Multiple choice

What is the length of one sidereal hour?

  1. 23 hours 56 minutes 4 seconds

  2. 23 hours 56 minutes 5 seconds

  3. 23 hours 56 minutes 6 seconds

  4. 23 hours 56 minutes 7 seconds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A sidereal hour is 23 hours 56 minutes 4 seconds long.

Multiple choice

How many sidereal hours are there in a sidereal day?

  1. 24

  2. 24.002

  3. 24.004

  4. 24.006
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

There are 24.002 sidereal hours in a sidereal day.

Multiple choice

What is the length of one sidereal minute?

  1. 59 minutes 8 seconds

  2. 59 minutes 9 seconds

  3. 59 minutes 10 seconds

  4. 59 minutes 11 seconds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A sidereal minute is 59 minutes 8 seconds long.

Multiple choice

How many sidereal minutes are there in a sidereal hour?

  1. 60

  2. 60.001

  3. 60.002

  4. 60.003
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

There are 60.001 sidereal minutes in a sidereal hour.

Multiple choice

What is the length of one sidereal second?

  1. 59.8 seconds

  2. 59.9 seconds

  3. 60.0 seconds

  4. 60.1 seconds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A sidereal second is 59.8 seconds long.

Multiple choice

How many sidereal seconds are there in a sidereal minute?

  1. 60

  2. 60.001

  3. 60.002

  4. 60.003
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

There are 60.001 sidereal seconds in a sidereal minute.

Multiple choice

What is the term used to describe a watch that displays the time in two or more time zones simultaneously?

  1. GMT watch

  2. Chronograph watch

  3. Dive watch

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

GMT watches, also known as dual-time or world-time watches, display the time in two or more time zones simultaneously.

Multiple choice

Which watchmaking innovation allows for precise timekeeping by using atomic vibrations?

  1. Tourbillon

  2. Chronometer

  3. Quartz Movement

  4. Atomic Clock
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Atomic clocks utilize the vibrations of atoms to maintain extremely precise timekeeping, making them the most accurate timekeeping devices.

Multiple choice

Which watchmaking innovation enables precise timekeeping by using the vibrations of a quartz crystal?

  1. Tourbillon

  2. Chronograph

  3. Quartz Movement

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

Quartz movements utilize the vibrations of a quartz crystal to generate precise timekeeping signals.

Multiple choice

What is the name of the watch complication that displays the time in two different time zones?

  1. Chronograph

  2. Tachymeter

  3. GMT Watch

  4. World Time Display
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A GMT watch features a complication that displays the time in two different time zones simultaneously.