Test Details

Periodicity Test

All MCQ question

Oct 27, 3:00 PM

30 minutes

Oct 27, 3:30 PM

40.0 marks

MCQ

20 questions

Arjun Sah

Hi, this is Arjun sah , more than 5 years of teaching experience. I teach chemistry for NEET/JEE/11th/12th. Having 2.5 years of experience in online classes also.I have worked at unacademy for last 2.5 years. Created many results in NEET and JEE. Join my live Classes, and make chemistry very easy.

Class Details

Chemistry

Inorganic Chemistry

Organic Chemistry

Physical Chemistry

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Question Text

Question 1 :
The ionic radii ( in A) of N-3,O2- and F- are respectively :

Question 2 :
Atomic radius decreases along a period. But the radius of zero group elements is more than the radius of corresponding halogens because -

Question 4 :
The first element of a group differs in many ways from the other heavier members of the group. This is due to :

Question 5 :
The radii of N, N3-, O and O2- are in the order :

Question 6 :
According to Mendeleev's periodic law, physical and chemical properties are function of

Question 7 :
A trend which is common to elements of both the group IA and group VIIA, on going from top to bottom

Question 8 :
Which of the following set of elements can not be a triad ?

Question 9 :
Which of the following is affected by the stable electron configuration of an atom ? (A) Electronegativity (B) Ionisation enthalpy (C) Electron gain enthalpy Correct answer is:

Question 10 :
With reference to periodic table, which of the following does not belong to the set of magic numbers ?

Question 11 :
Which among the following elements has the highest value for third ionisation energy?

Question 12 :
The main reason for showing anomalous properties of the first member of a group in s or p - block is.

Question 16 :
Aqueous solutions of two compounds M1 - O - H and M2 - O - H are prepared in two different beakers. If, the electronegativity of M1 = 3.4, M2 = 1.2, O = 3.5 and H = 2.1, then the nature of two solutions will be respectively:

Question 18 :
{tex}\mathrm{X^{2-}}{/tex} is isoelectronic with {tex}\mathrm{O_2^{+} }{/tex} and has Z+1 neutron (Z is atomic number of {tex}\mathrm{X^{2-}}{/tex}) then :

Question 19 :
To which group, an element with atomic number 88 will belong?

Question 20 :
If an element {tex}A{/tex} shows two cationic states {tex} + 2 {/tex} and {tex} + 3 {/tex} and form oxides in such a way that ratio of the element showing {tex} + 2 {/tex} and {tex} + 3 {/tex} state is {tex} 1: 3 {/tex} in a compound. Formula of the compound will be

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