A. Energy is absorbed
B. Energy is released
C. Mass is increased due to energy absorption
D. Mass is reduced due to the energy released
Related Mcqs:
- The speed of sound in hydrogen is _____________ time than that in oxygen?
A. Two times
B. Three times
C. Four time
D. Six time - In hydrogen spectrum which one of the following series lies in the ultraviolet region ?
A. Balmer series
B. Pfund series
C. Bracket series
D. Lymann series - Hydrogen atom does not emit X-rays because _________________?
A. its energy levels are too close to each other
B. its energy levels are too far apart
C. it is too small in size
D. it has a single electron - Total number of series in hydrogen spectrum is_____________?
A. three
B. four
C. five
D. six - The radiations emitted form hydrogen filled discharge tube show____________?
A. band spectrum
B. line spectrum
C. continuous spectrum
D. absorption spectrum - During the fission process a large amount of______________?
A. Heat energy is released
B. Nuclear energy is released
C. Chemical energy is released
D. Light energy is released - If one or more of the neutrons emitted during fission cab be used to build up further fission then the reaction is self-sustained and is known as __________________?
A. Fission reaction
B. Fusion reaction
C. Chain reaction
D. Chemical reaction - During an encounter with an atom alpha particle knocks out ______________?
A. Protons
B. Electrons
C. Neutrons
D. Nothing - During long jump, athlete runs before taking the jump. By doing so he__________________?
A. provide him a larger inertia
B. decreases his inertia
C. decreases his momentum
D. increases his momentum - A body is falling freely under gravity. How much distance it falls during an interval of time between 1st and 2nd seconds of its motion, taking g=10 ?
A. 15 m
B. 20 m
C. 5 m
D. 25 m
