EASY
9th CBSE
IMPORTANT
Earn 100

Which of the following is a correct formula of the calcium carbonate?

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Important Questions on Competition Corner-2

MEDIUM
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 17 - Competition Corner-2>Exercise: Atoms and Molecules
The element which loses electrons to form ions with variable valencies is
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 17 - Competition Corner-2>Exercise: Atoms and Molecules
The number of elements which are present in the compound ammonium phosphate is
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 17 - Competition Corner-2>Exercise: Atoms and Molecules
Ratio by mass of the element present in SO2 is
MEDIUM
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 17 - Competition Corner-2>Exercise: Atoms and Molecules
A plumbous ion is formed from lead atom by
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 17 - Competition Corner-2>Exercise: Atoms and Molecules
Which of the following is a correct formula of copper nitrate?
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 17 - Competition Corner-2>Exercise: Atoms and Molecules
The acid which does not contain a radical of a polyatomic group is
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 17 - Competition Corner-2>Exercise: Atoms and Molecules
If the nitride of a metal M has the formula MN, what is the formula of its sulphide, carbonate and chloride?
EASY
9th CBSE
IMPORTANT
The Science Springboard: A Foundation Course Based on NCERT Curriculum>Chapter 17 - Competition Corner-2>Exercise: Atoms and Molecules
According to the IUPAC recommendation "amu" has been replaced with "u". "u" stands for