1. The mass of a hydrogen atom is ------------------ kg. (JEE 1982)
answer: 1.66*10^-27 kg
2. When there are two electrons in the same orbital, they have ---------------- spins. (JEE 1982)
Answer: opposite or antiparallel
3. Isotopes of an element differ in the number of ______________ in their nuclei. (JEE 1982)
Anwer: neutrons
4. Elements of same mass number but of different atomic numbers are known as ----------.
(JEE 1983)
Answer: isobars
5. Fill in the blanks choosing appropriate words given with brackets)
the uncertainty principle and the concept of wave nature of matter were proposed by ----------------- and -------------------- respectively
(Heisenberg, Schrodinger, Maxwell, de Broglie)
(JEE 1988)
Answer: Heisenberg, de Broglie
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3 comments:
good question paper
why don't u try putting a more hard Question paper on atomic structure
@Gopi
Thank you for the comment. At the moment I am involved in completely updating my revision materials in physics, mathematics and chemistry. In this month I am concentrating on physics. Next month Mathematics and then chemistry. From January 2009, I want focus on problems and questions. Then I shall use the encouragement that you gave me to develop question papers.
put the questions of net exam level
with explaination
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