Test Details

Structure of the Atom

Jan 20, 10:10 AM

30 minutes

Jan 20, 10:40 AM

60.0 marks

MCQ

30 questions

Prabhat shakti

MSc, BEd

Class Details

Chemistry

Target NEET

Chemistry

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Question Text

Question 1 :
Chlorine occurs in nature in two isotopic forms, with masses 35 u and 37 u in the ratio of 3:1. Calculate the average atomic mass.

Question 2 :
If K and L shells of an atom are full, then what would be the total number of electrons in the atom?

Question 3 :
An isotope of iodine is used in the treatment of goitre. TRUE OR FALSE?

Question 5 :
The number of electrons gained, lost or shared so as to make the octet of electrons in the outermost shell is called?

Question 6 :
If Bromine atom is available in the form of, say, two isotopes $^{79}_{35}Br$ (49.7%) and $^{81}_{35}Br$ (50.3%), calculate the average atomic mass of bromine atom.

Question 7 :
If an atom contains one electron and one proton, will it carry any charge?

Question 8 :
J.J. Thomson proposed that the nucleus of an atom contains only nucleons. TRUE OR FALSE?

Question 9 :
The mass number is defined as the sum of the total number of protons and electrons present in the nucleus of an atom. TRUE OR FALSE?

Question 10 :
According to Rutherford, Radius of the nucleus is about ____ times less than the radius of the atom.

Question 11 :
Mass of neutron is nearly equal to that of electron. TRUE OR FALSE?

Question 12 :
If Z = 3, what would be the valency of the element? Also, name the element.

Question 13 :
Dalton’s atomic theory suggested that the atom was divisible and destructible. TRUE or FALSE ?

Question 14 :
If mass number is 1, number of neutrons is 0, number of protons is 1 and number of electrons is 1 then find name of atomic species.

Question 15 :
An isotope of cobalt is used in the treatment of cancer.TRUE OR FALSE?

Question 17 :
If mass number is 2 and number of proton is 1, then find atomic number.

Question 18 :
The mass of an atom of any natural element is taken as the average mass of all the naturally occuring atoms of that element. TRUE OR FALSE?

Question 19 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d2d4f59b460d7261f63a.PNG' /> With the help of the above table, find out the mass number of oxygen and sulphur atom.

Question 20 :
If mass number is 24 and number of protons is 12, then find name of the atomic species.

Question 21 :
If atomic number is 16, mass number is 32 and name of atomic species is Sulphur then find number of protons.

Question 22 :
If mass number is 24 and number of protons is 12, then find atomic number.

Question 23 :
An isotope of _______ is used in the treatment of goitre?

Question 24 :
On the basis of Rutherford’s model of an atom, which subatomic particle is present in the nucleus of an atom?

Question 25 :
If atomic number is 9 and number of neutrons is 10, then find the mass number.

Question 27 :
An isotope of iodine is used for making tincture iodine, which is used as a medicine.

Question 28 :
If mass number is 2 and number of proton is 1, then find name of the atomic species.

Question 30 :
The electrons present in the outermost shell of an atom are known as?

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