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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 the dimensions of time.
(a) Both A and R are true and R correctly explains A
(b) Both A and R are true, but R does not explain A
(c) A is correct, but R is incorrect
(d) A is incorrect, but R is correct
Option c – A is correct, but R is incorrect
Which of the following pairs of physical quantities share the same dimensions?
(d) Momentum and power
Identify the non-dimensional quantity from the options below:
(a) Gas constant
(b) Strain
(c) Coefficient of viscosity
(d) Planck’s constant
Option b – Strain
Which of the following has dimensions different from the other three?
(a) power
(b) work
(c) Torque
(d) energy
Option a – power
The least count of vernier calipers is
(a) 0.001 cm
(b) 0.01 cm
(c) 1 cm
(d) None of the above
Option b – 0.01 cm
A student uses a meter scale with a least count of 1 mm. Which measurement is the most precise?
(a) 0.50 mm
(b) 29.07 mm
(c) 0.925 mm
(d) 910 mm
Option c – 0.925 mm
A Light year refers to
(a) Light emitted by the Sun in one year
(b) Time taken by Light to travel from Sun to Earth
(c) Distance traveled by Light in vacuum in one year
(d) Time taken by Earth to complete one orbit around the Sun
Option c – Distance traveled by Light in vacuum in one year
One kilogram is defined as
(a) The Mass of a platinum-iridium cylinder kept in Paris
(b) The Mass of mercury in standard pans
(c) The distance 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 how many Light years?
(a) 5.26
(b) 4.26
(c) 6.26
(d) 3.26
Option d – 3.26
One nanometer equals
(a) 10⁻³ meters
(b) 10⁻⁶ meters
(c) 10⁻⁹ meters
(d) 10⁻¹² meters
Option c – 10⁻⁹ meters
A nautical mile corresponds to
(a) 2000 meters
(b) 1852 meters
(c) 1672 meters
(d) 2450 meters
Option b – 1852 meters
Assertion (A): AU is much larger than Å. Reason (R): AU stands for Astronomical Unit and Å stands for Angstrom.
(a) Both A and R are true and R correctly explains A
(b) Both A and R are true, but R does not explain A
(c) A is correct, but R is incorrect
(d) A is incorrect, but R is correct
Option b – Both A and R are true, but R does not explain A
Identify the incorrect statement:
(a) Every measurement by an instrument involves some error
(b) Every derived physical quantity has the same error as the measured values
(c) A measurement can be accurate but not precise, and vice versa
(d) Percentage error is different from relative error
Option d – Percentage error is different from relative error
The least count of a 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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