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Chemistry
The equation proposed by Planck for the energy of quantum is:
A
E = mc^2
B
E = h?
C
E = 1/2 mv^2
D
E = ??
Correct Answer
B
Chemistry
According to Planck's quantum theory, energy emitted or absorbed by a body does not propagate in continuous form but in form of:
A
Waves
B
_Units/packets of energy called quanta
C
Particles only
D
Rays
Correct Answer
B
Chemistry
Electron is how many times lighter than proton?
A
1836 times
B
1863 times
C
1386 times
D
1683 times
Correct Answer
A
Chemistry
In discharge tube experiment, rays produced when hydrogen gas is in the discharge tube are
A
Electrons
B
Protons
C
Neutrons
D
Alpha rays
Correct Answer
B
Chemistry
In discharge tube experiment, cathode rays are in fact.
A
Protons
B
Neutrons
C
Electrons
D
Positrons
Correct Answer
C
Chemistry
Electron, proton and neutron are the fundamental particles of:
A
Only metals
B
All kinds ofmatter
C
Only non-metals
D
d. Only gases
Correct Answer
A