Class 10 – sci- Chemical reaction s

Here is a Quick test with Five questions for Assessments:

1.

Magnesium ribbon is rubbed before burning because it has a coating of

basic magnesium chloride

basic magnesium carbonate

basic magnesium sulphide

basic magnesium oxide

2.

Corrosion in case of iron is known as

Rancidity

Rusting

Reduction

Combination

3.

What are the coefficients of the correctly balanced equations? ----Fe2O3 + ----CO → ----Fe + ---CO2

1,3,2,3

0,2,2,3

1,2,2,2

2,6,4,3

4.

2 FeSO₄ → Fe₂O₃ + SO₂ +

5.

The addition of oxygen to a substance is called whereas removal of oxygen is called

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