📚NCERT Questions — NCERT10

Which of the following is NOT a form of energy that can be used to carry out decomposition reactions?

If a substance gains oxygen during a reaction, it is said to be:

What is the colour of the precipitate formed when lead(II) nitrate solution is mixed with potassium iodide solution?

The reaction Ca(OH)₂(aq) + CO₂(g) → CaCO₃(s) + H₂O(l) is important for:

If a substance loses oxygen during a reaction, it is said to be:

Which of the following is a balanced chemical equation for the reaction between zinc and silver nitrate?

If hydrogen gas is passed over heated copper(II) oxide, the black coating turns brown. This is because:

Balance the following chemical equation: Fe + H₂O → Fe₃O₄ + H₂. What are the coefficients for Fe, H₂O, Fe₃O₄, and H₂ respectively?

Any reaction that produces an insoluble substance is called a:

According to the Law of Conservation of Mass, which of the following must be true in a chemical reaction?