Chemical Formula
9th Grade
•20 Qs
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Chemical Formula
Quiz
•
Chemistry
•
9th Grade
•
Medium
MEENAKSHI MUKHERJEE
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20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
The chemical symbol for nitrogen gas is
ni
N2
N
NI
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
The chemical symbol for sodium is
so
SO
Na
NA
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
valency of helium is
0
3
2
1
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The molecular formula of potassium nitrate is ________.
KNO
KON
KNO3
KNO2
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Atomic mass of sodium is
13
23
21
19
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
who presented the atomic theory
Albert Einstein
John Dalton
Robert Hooke
Marie Curie
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The smallest particle of a substance is......
atom
element
molecule
compound
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