🧪 CBES Board Class 11 MCQ Quiz Hub

1. The word Science originates from the Latin verb Scientia meaning
to know
to see
to experience
to observe

2. Atomic and molecular phenomena are dealt with by
Newtonian Mechanics
fluid Mechanics
applied Mechanics
Quantum Mechanics

3. Wave picture of light failed to explain.
the photoelectric effect
polarization of light
diffraction of light
interference of light

4. Heliocentric theory proposed by Nicolas Copernicus was
replaced by circular orbits to fit the data better
replaced by elliptical orbits to fit the data better
replaced by elliptical orbits to fit the taste of new rulers of Italy
replaced by parabolic orbits to fit the data better

5. A scientific theory
cannot be changed but can be reformulated
is fixed once and for all because it is logical
is changed to suit new fashion among scientists
can be revised if required to fit new phenomenon or data

6. The dimensions of kinetic energy is
[M 2L2T]
[ML 2T]
[ML 2T-2]
ML 2T-1]

7. The atmospheric pressure is 106 dyne/cm². What is its value in SI unit?
105 newton/m² (
106 newton/m²
104 newton/m²
103 newton/m²

8. The dimensions of kinetic energy is same as that of
force
pressure
work
momentum