Test Details

Structure of the Atom,Structure of The Atom - NCERT

Mar 05, 1:00 PM

75 minutes

Mar 05, 5:00 PM

74.0 marks

MCQ

48 questions

📚👍RUCHI PURI

MATHEMATICS & SCIENCE TEACHER

Class Details

Maths & Science

ELEGANT CLASSES @10

Maths & Science

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Question Text

Question 2 :
While revolving in discrete orbits the electrons do not radiate energy. These orbits or shells are called .................. 

Question 3 :
According to whose atomic model, electrons are embedded in a gel of positive charge?

Question 4 :
The experiment which led to the discovery of nucleus was performed by :

Question 6 :
Which experiment helped to prove the existence of the atomic nucleus?

Question 7 :
In 1932, ___________ discovered an electrically neutral particle in the atom named as neutron.

Question 12 :
Maximum number of electrons that can be accomodated in a shell (in general) is given by the formula

Question 14 :
Which of the following elements has three shells with no shells having even number of outer electrons?

Question 15 :
The maximum number of electrons that can be accommodated in the outermost orbit is :

Question 22 :
In which of the following pairs do the two species resemble each other most closely in chemical properties?<br>

Question 23 :
The ion of an element has 3 positive charges. Mass number of the atom is 27 and the number of neutrons is 14. What is the number of electrons in the ion?

Question 24 :
An atom with 3 protons and 4 neutrons will have a valency of

Question 27 :
Which of the following correctly represent the electronic distribution in the Mg atom?

Question 28 :
Why did Rutherford select a gold foil in his $\alpha$–ray scattering experiment?

Question 29 :
Is it possible for the atom of an element to have one electron, one proton and no neutron. (Yes/No)

Question 30 :
Which of the following is the correct electron distribution of chlorine atom ? (Atomic number of chlorine is 17).

Question 31 :
One electron is present in the outer most shell of the atom of an element X. What would be the value of charge on the ion formed if this electron is removed from the outermost shell ?

Question 32 :
How many electrons are there in the L shell of chlorine atom ?

Question 33 :
In response to a question, a student stated that in an atom, the number of protons is greater than the number of neutrons, which in turn is greater than the number of electrons. Do you agree with the statement ? (Yes/No)

Question 34 :
State true or false: In an atom the number of protons and electrons is always equal.

Question 35 :
Calculate the number of neutrons present in the nucleus of an element X which is represented as $_{15}^{31}X$.

Question 36 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2b1f59b460d7261f60b.JPG' /> Find out the valency of atoms represented by the figure.

Question 37 :
The atomic number of calcium and argon are 20 and 18 respectively, but the mass number of both these elements is 40. What is the name given to such a pair of elements?

Question 38 :
Which of the following element has an atom with one electron, one proton and no neutron ?

Question 39 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2b2f59b460d7261f60c.JPG' /> Find out the valency of atoms represented by the figure.

Question 40 :
State true or false: Helium atom has 2 electrons in its valence shell but its valency is not 2.

Question 42 :
Rutherford’s α-particle scattering experiment led to the discovery of the ____________.

Question 44 :
Neon and chlorine have atomic numbers 10 and 17 respectively. Their valencies will be ______ and _______ respectively.

Question 46 :
Helium atom has a valency of zero, even after having 2 electrons in its valence shell, because

Question 48 :
An element X has a mass number 4 and atomic number 2. Write the valency of this element?

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