Advertisements
Advertisements
Question
Select the correct answer from the choice in the bracket to complete the sentence:
A ________ is a sub-atomic particle with no charge and unit mass.
Options
proton
neutron
Advertisements
Solution
A neutron is a sub-atomic particle with no charge and unit mass.
APPEARS IN
RELATED QUESTIONS
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
Give the following a suitable word/phrase.
The electrons present in the outermost shell.
Explain the rule with example according to which electrons are filled in various energy levels
FILL IN THE BLANK
Gases become good conductors of electricity under ........ (low/high) pressure and .............. (low/high) voltage electrical discharge.
Tick the most appropriate answer.
Which of the following scientists observed that cathode rays consists of negatively charged particles?
- John Dalton
- J J Thomson
- James Chadwick
- Democritus
Tick the most appropriate answer.
In 1908, R A Millikan found the charge of an electron to be
- 1.6 x 10-19 C
- 1.6 x 10-15 C
- 1.4 x 10-19 C
- 1.6 x 19-16 C.
WRITE SHORT ANSWER
Name the isotopes of hydrogen.
State the location of electrons, protons and neutrons in an atom.
State its one drawback of Rutherford’s atomic model.
Explain in brief – Goldstein’s experiment which led to the discovery of the proton.
