TN State Board Samacheer Kalvi Online Test for 10th Std - Science - English - Atoms And Molecules

Question 1 Of 10

Which of the following statement is incorrect?

One gram of C – 12 contains Avogadro’s number of atoms. One mole of oxygen gas contains Avogadro’s number of molecules. One mole of hydrogen gas contains Avogadro’s number of atoms. mole of electrons stands for 6.023 × 1023 electrons.

Question 2 Of 10

Which of the following has the smallest mass?

6.023 × 1023 atoms of He 1 atom of He 2 g of He le atoms of He

Question 3 Of 10

Mass of 1 mole of Nitrogen atom is

28 amu 14 amu 28 g 14 g

Question 4 Of 10

In the nucleus of 20Ca40, there are

20 protons and 40 neutrons 20 protons and 20 neutrons 20 protons and 40 electrons rotons and 20 electrons

Question 5 Of 10

1 mole of any substance contains molecules.

6.023 × 1023 6.023 × 10-23 3.0115 × 1023 46 × 1023

Question 6 Of 10

The volume occupied by 4.4 g of CO2 at S.T.P

22.4 litre 2.24 litre 0.24 litre litre

Question 7 Of 10

Which of the following is a triatomic molecule?

Glucose Helium Carbon dioxide Hydrogen

Question 8 Of 10

The volume occupied by 1 mole of a diatomic gas at S.T.P is

11.2 litre 5.6 litre 22.4 litre litre

Question 9 Of 10

The gram molecular mass of oxygen molecule is

16 g 18 g 32 g 17 g

Question 10 Of 10

Which of the following represents 1 amu?

Mass of a C – 12 atom Mass of a hydrogen atom 1/12th of the mass of C – 12 atom of O – 16 atom

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 10th Standard Science - English Medium - Atoms And Molecules

Samacheer Kalvi 10th Science - Atoms And Molecules - Book Back Questions in English Medium