Do as Directed.

Questions

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5 questions · timed · auto-graded

Question 11 Mark

Statement are incorrect. write the correct statement:
The symbol of the chlorine gas is Cl2.

Answer

The symbol of the chlorine gas is Cl.

Question 21 Mark

Statement are incorrect. write the correct statement:
The collective name of all particles found within the nucleus is nuclear particles.

Answer

The collective name of all particles found within the nucleus is nucleon.

Question 31 Mark

Statement are incorrect. write the correct statement:
The formula of an oxide of aluminum is Al3O2.

Answer

The formula of an oxide of aluminum is Al2O3.

Question 41 Mark

Statement are incorrect. write the correct statement:
The shell closest to the nucleus of an atom is called valence shell.

Answer

The outermost shell to the nucleus of an atom is called valence shell.

Question 51 Mark

Statement are incorrect. write the correct statement:
When an element accepts 2 electrons its valence shell, its valency is 2+.

Answer

When an element accepts 2 electrons its valence shell, its valency is 2-.

Do as Directed. - CHEMISTRY STD 7 Questions - Vidyadip

CHEMISTRY Do as Directed.