SSLC (English Medium) Class 10 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

1 mole of any substance contains ______ molecules.

One mole of any gas occupies ______ ml at S.T.P.

Match the following.

What is Molar volume of a gas?

N₂ + 3H₂ → 2NH₃

(The atomic mass of nitrogen is 14, and that of hydrogen is 1)

1 mole of nitrogen (______ g) +

3 moles of hydrogen (______ g) →

2 moles of ammonia (______ g)

Calculate the number of moles in 27g of Al.

Calculate the number of moles in 1.51 × 10²³ molecules of NH₄Cl.

How many grams are there in the following?

2 moles of the hydrogen molecule, H₂.

How many grams are there in the following?

3 moles of chlorine molecule, Cl₂.

How many grams are there in the following?

5 moles of sulphur molecule, S₈

How many grams are there in the following?

4 moles of the phosphorous molecule, P₄

The secondary suffix used in the IUPAC nomenclature of an aldehyde is ______

In IUPAC name, the carbon skeleton of a compound is represented by ______

Arrive at, systematically, the IUPAC name of the compound:

CH₃ – CH₂ – CH₂ – OH

Oxygen is produced at what point during photosynthesis?

The source of O₂ liberated in photosynthesis is ______. 

______ is ATP factory of the cells.

Mesophyll contains chlorophyll.

Where does the carbon that is used in photosynthesis come from?

What is photosynthesis and wherein a cell does occur?