Test Details

Structure of the Atom

Feb 02, 12:15 PM

30 minutes

Feb 02, 12:45 PM

30.0 marks

MCQ

30 questions

Suryakant Dewangan

Sk Dewangan physics/maths teacher Teaching for last 15 years and career counsellor .Free launcher poet .Broadcasted programme from AIR Raipur on CHANDRYAAN mission .

Class Details

Physics

PFU 9th

Physics

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Question Text

Question 1 :
Isotopes of cobalt .......... is used in the treatment of cancer.

Question 2 :
Which of the following is not a conclusion of Rutherford experiment?

Question 4 :
Ratio of time of electron in first and second orbit of $H$- atom be:

Question 5 :
The salt of an oxyacid of a metal $M$ contains one sulphur and four oxygen atoms. The oxyacid of the salt is:

Question 6 :
In 1911, __________ came to the conclusion that the atom had a dense nucleus because most of the particles shot straight through, but some of the particles were deflected due to the dense nucleus of the gold atoms.

Question 7 :
An electron in energy level $n=1$ is given energy $E$ which is slightly more than energy required to excite to level $n=2$ and less than energy required to excite to level $n=3$. The electron will:

Question 10 :
Bohr modified the ___________ by adding that the electrons move in orbits of fixed size and energy.

Question 11 :
The salt of an oxyacid of a metal $M$ contains one sulphur and four oxygen atoms. The formula of the base formed by this metal $M$ is:

Question 14 :
<p>Which one of these elements does not have its valence shell fully filled?</p>

Question 15 :
When an atom accepts $ 2$ electrons in its outermost shell, its valency is $+2$.

Question 17 :
Which of the following was carried out by Rutherford in his experiment?

Question 18 :
<p>Which one of these configurations tends to gain, lose or share electrons?</p>

Question 19 :
An element has atomic number 15. Its valence electrons, group number and valency are respectively 

Question 20 :
According to whose atomic model, electrons are embedded in a gel of positive charge?

Question 22 :
Valency can be defined as the same number of hydrogen atoms or double the number of oxygen atoms that element combines with.

Question 24 :
Maximum number of electrons that can be accomodated in a shell (in general) is given by the formula

Question 25 :
According to postulates of Bohr's atomic model, the electrons in atom move round the nucleus :

Question 28 :
The maximum number of electrons present in the given shell is given by the formula :

Question 29 :
The maximum number of electrons that can be accommodated in the outermost orbit is :

Question 30 :
In 1913, Bohr proposed his quantized shell model of the atom to explain :

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