
Atoms and Molecules
Authored by Himanshu Ranjan
Chemistry
9th Grade
Used 438+ times

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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
15
31
16
47
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which of the following is not a polyatomic ion?
Sulphide
Sulphite
Sulphate
Bisulphide
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
The symbol of Mercury is taken from its latin name:
Cuprum
Stibium
Argentum
Hydrargyrum
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Which of the following is not a postulate of Dalton's Atomic Theory?
All matter consists of indivisible particles called atoms.
Atoms cannot be created or destroyed.
Atoms of the same element are similar in shape and mass, but differ from the atoms of other elements.
The electron is the smallest unit of matter that can take part in a chemical reaction.
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Dalton proposed this atomic symbol for which element?
Phosphorus
Sulphur
Hydrogen
Mercury
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
IUPAC stands for:
International Understanding of Physics and Chemistry
International Union of Pure and Applied Chemistry
Indian Union of Pure and Applied Chemistry
International Union of Permutation and Combination
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
The volume of atom is about ---------------- times the volume of nucleus
105
1010
1015
1020
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