Class 10 Science Chapter 2 MCQ Online Test. We covered all the Class 10 Science Chapter 2 MCQ Online Test in this post for free so that you can practice well for the exam.
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Mock Test on Science for Class 10 Students
Assertion (A) Light year and wavelength both measure distance. Reason (R) Both have dimensions of time. Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Option c – A is true, but R is false
Which of the following pairs of physical quantities have the same dimensions?
(d) Momentum and Power
Which one of the following is a non-dimensional quantity?
(a) Gas constant
(b) Strain
(c) Co-efficient of viscosity
(d) Planck’s constant
Option b – Strain
Which one has dimensions different from the remaining three?
(a) Power
(b) Work
(c) Torque
(d) Energy
Option a – Power
The least count of the vernier calipers is
(a) 0.001
(b) 0.01 cm
(c) 1 cm
(d) None of the above
Option b – 0.01 cm
A student measures certain lengths using a meter scale having the least count equal to 1 mm. Which one of the following measurements is more precise?
(a) 0.50 mm
(b) 29.07 mm
(c) 0.925 mm
(d) 910 mm
Option c – 0.925 mm
A light year is
(a) light emitted by Sun in one year.
(b) time is taken by light to travel from Sun to Earth.
(c) the distance traveled by light in free space in one year.
(d) time is taken by Earth to go once around the Sun.
Option c – the distance traveled by light in free space in one year
One kilogram is
(a) the mass of a platinum-iridium cylinder kept in Paris.
(b) the mass of mercury kept in pans.
(c) the length of the path traveled by light in a vacuum.
(d) None of the above
Option a – the mass of a platinum-iridium cylinder kept in Paris
One parsec is equal to ….. light year
(a) 5.26
(b) 4.26
(c) 6.26
(d) 3.26
Option d – 3.26
One nanometer is equal to ……… meters.
(a) 10 raised to the power (-3)
(b) 10 raised to the power (-6)
(c) 10 raised to the power (-9)
(d) 10 raised to the power (-12)
Option c – 10 raised to the power (-9)
A nautical mile is equal to ………
(a) 2000 meters
(b) 1852 meters
(c) 1672 meters
(d) 2450 meters
Option b – 1852 meters
Assertion (A) AU is much bigger than A. Reason (R)AU stands for Astronomical Unit and Å stands for Angstrom. Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Option b – Both A and R are true, but R is not the correct explanation of A
Choose the incorrect statement out of the following.
(a) Every measurement by a measuring instrument has some error.
(b) Every calculated physical quantity that is based on measured values has the same error.
(c) A measurement can have more accuracy but less precision and vice-versa.
(d) The percentage error is different from the relative error.
Option d – The percentage error is different from the relative error
The least count of the screw gauge is
(a) 0.01 cm
(b) 0.001 cm
(c) 0.00001 cm
(d) 0.1 cm
Option b – 0.001 cm
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