SSLC (English Medium) कक्षा १० - Tamil Nadu Board of Secondary Education Question Bank Solutions

Which of the following has the smallest mass?

Mass of 1 mole of Nitrogen atom is ______

Which of the following represents 1 amu?

The sum of the numbers of protons and neutrons of an atom is called its ______

Relative atomic mass is otherwise known as ______.

The average atomic mass of hydrogen is ______ amu.

Noble gases are Diatomic.

The gram atomic mass of an element has no unit.

Answer the following question using the data given below:

• Assertion: The Relative Atomic mass of aluminium is 27
• Reason: An atom of aluminium is 27 times heavier than 1/12th of the mass of the C – 12 atom.

Write the different types of isotopes of oxygen and their percentage abundance.

Calculate the % of each element in calcium carbonate. (Atomic mass: C-12, O-16, Ca -40)

Calculate the % of oxygen in Al₂(SO₄)₃. (Atomic mass: Al-27, O-16, S -32)

Calculate the % relative abundance of B-10 and B-11, if its average atomic mass is 10.804 amu.

The chemical equation Na₂SO_4(aq) + BaCl_2(aq) → BaSO_4(s)↓ + 2NaCl_(aq) represents which of the following types of reaction?

What is called thermolysis reactions?

Classify the following compounds based on the pattern of the carbon chain and give their structural formula:

(i) Propane

(ii) Benzene

(iii) Cyclobutane

(iv) Furan

Casparian strips are present in the ______ of the root.

The endarch condition is the characteristic feature of ______

The waxy protective covering of a plant is called a cuticle.

Palisade parenchyma cells occur below the upper epidermis in the dicot root.