Science
Elements and Their Discovery Quiz
Test your knowledge of the periodic table and the history of chemistry with our engaging quiz. Challenge yourself and see how well you understand the relationships between elements and their properties.
In this quiz, you will explore:
- The Law of Octaves
- Mendeleev's contributions to chemistry
- Acidic and basic oxides
- Periodic trends in the table of elements
Q1 :- Newlands relation is called
Musical Law
Law of Octaves
Periodic Law
Atomic Mass Law
Q2 :-Upto which element, the Law of Octaves was found applicable?
Oxygen
Calcium
Cobalt
Potassium
Q3 :-At the time of Mendeleev, the number of elements known was
63
65
62
64
Q4 :-The properties of eka-aluminium predicted by Mendeleev are the same as the properties of later discovered element:
Scandium
Germanium
Gallium
Aluminium
Q5 :- Which of the following is the atomic no. Of an element that forms basic oxide ?
18
17
15
19
Q6 :- Which of the following does not decrease while moving down the group of the periodic table ?
Atomic Radius
Metallic Character
No. Of shells in the atom
Valence Electrons
Q7 :-On moving from left to right in a period in the periodic table, the size of the atom
Increases
Decreases
Does not change appreciably
First decreases and then increases.
Q8 :-In which group are inert elements placed? ‘
Group 8
Group 10
Group 1
Group 18
Q9 :-Which of the following property will be common in group 1 elements?
Mass number
Number of protons in nucleus
Atomic number
Number of valence electrons
Q10 :-According to Medeleev’s Periodic Law, the elements were arranged in the periodic table in the order of
Increasing atomic number
Decreasing atomic number
Increasing atomic masses
Decreasing atomic masses
Q11 :-The longest period of the Modern Periodic Table is period.
First
Second
Fourth
Sixth
Q12 :-Eka-aluminium and Eka-silicon are known as
Gallium and germanium
Aluminium and silicon
Iron and sulphur
Neutron and proton
Q13 :-Pick out the odd one -
Argon
Neon
Barium
Helium
Q14 :-Which out of them has the biggest radii?
Na
Mg
K
Ca
Q15 :-The number of electrons in valence shell is equal to -
Atomic mass
Group number
period number
Atomic volume
Q16 :-24. Which of the following set of elements is written in order of their increasing metallic character?
Na Li K
C Q N
Mg Al Si
Be Mg Ca
Q17 :-. Which of the following elements will form an acidic oxide ?
An element with atomic number 7
An element with atomic number 3
An element with atomic number 12
An element with atomic number 19
Q18 :- The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
Metal
Metalloid
Non-metal
Left-hand side element
Q19 :-An element with atomic number will form a basic oxide________
7
17
14
11
Q20 :-Why are elements classified?
To enable a better understanding on fundamental properties of elements.
To find a place for each element and know about its relationship with other elements.
To understand each element in a better way based on various observations.
All of the above
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