Download App

CHEMISTRY [1 Mark Question Answer]

Unit - 2.1 Elements and Compounds · ICSE STD 6 (ICSE - English Medium). 53 questions.

Questions · Page 1 of 2

[1 Mark Question Answer]

🎯

Test yourself on this topic

50 questions · timed · auto-graded

Question 41 Mark
Find the odd one out. Give a reason.
Magnesium, mercury, manganese and silver
Answer
Manganese is odd one out because it is a non metal and the other three are metals.
View full question & answer→
Question 171 Mark
Write the number of atoms of each element in following molecules :H2SO4
Answer
It represents 2 atoms of hydrogen, 1 atom of sulphur and 4 atoms of oxygen.
View full question & answer→
Question 181 Mark
Write the number of atoms of each element in following molecules : Al2(SO4)3
Answer
It represents 2 atoms of Aluminium, 3 atoms of sulphur and 12 atoms of oxygen.
View full question & answer→
Question 191 Mark
Write the number of atoms of each element in following molecules :CuSO4
Answer
It represents 1 atom of copper, one atoms of sulphur and four atoms of oxygen.
View full question & answer→
Question 201 Mark
Write the number of atoms of each element in following molecules : Na2CO3
Answer
It represents 2 atoms of sodium, One atom of carbon and 3 atoms of oxygen.
View full question & answer→
Question 211 Mark
What does a chemical formula represent?
Answer
A Chemical formula represents the number of atoms of each element present in one molecule of the compound. It represents a mole of an atom.
View full question & answer→
Question 221 Mark
Define the term chemical formula.
Answer
The chemical formula of a compound is a symbolic representation of its chemical composition.
View full question & answer→
Question 231 Mark
Define the term compound.
Answer
When two or more elements chemically combine in a fixed ratio by mass, the obtained product is known as a compound.
View full question & answer→
Question 301 Mark
What do you understand by following terms? Molecules
Answer
The smallest particle of a substance that has all of the physical and chemical properties of that substance. Molecules are made up of one or more atoms.
View full question & answer→
Question 311 Mark
What do you understand by following terms? Atoms
Answer
An atom is a particle of matter that uniquely defines a chemical element.
View full question & answer→
Generate Paper FreeAll Unit - 2.1 Elements and Compounds topics
[1 Mark Question Answer] - CHEMISTRY STD 6 Questions - Vidyadip