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    How to prepare for NEET 2026 in 1 month - Preparation Tips & Tricks

    Practical Units MCQ - Practice Questions with Answers

    Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET

    Quick Facts

    • Practical units is considered one of the most asked concept.

    • 11 Questions around this concept.

    Solve by difficulty

    Which of the following has units of time ?

    The time taken by the earth to complete one rotation about its axis with respect to a distant star is called:

    Which of the following is not a unit for length-

    One solar year is equal to :

    1 a.m.u. is equivalent to -

    Concepts Covered - 0

    Practical units

         

    1. Practical units of  length 

    Name

    Symbol

    Conversion in m

    1 fermi   

    1 fm

    m

    1 X-ray unit

    1 XU 

    m

    1 Angstrom  

    m

    1 micron 

    m

    1 Astronomical unit

    1 AU

    1 Light year

    1 ly 

    1 Parsec 

    1 Pc

    3.26 light year

     

    1. Practical units of mass

     

    Name

    Symbol

    Conversion in kilogram (Kg)

    1 Chandra Shekhar Unit

    1 CSU

    = 1.4 times the mass of the sun

    1 Metric tonne 

    1 Metric tonne 

    1000 kg

    1 Quintal  

    1 Quintal  

    100 kg

    1 Atomic mass unit

    1 amu

     

    1. Practical units of  Time

    • 1 year =365.25 days = Sec

    • Lunar Month-27.3 days  (It is the time taken by the moon to complete 1 revolution around the earth in its orbit)

    • Solar day-It is the time taken by the earth to complete one rotation about its axis with respect to Sun.

    • Sidereal day- It is the time taken by the earth to complete one rotation about its axis with respect to a distant star.

    • 1 Solar year- 366.25 sidereal days = 365.25 average solar day

    • 1 Average Solar Day=    (\frac{1}{365.25})^{th} part of the solar year

    • 1 solar second  = \frac{1}{86400}^{th}part of the mean solar day

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