NCERT solution of class for class 10th // Science // Chapter 1 - Chemical reaction and equation
NCERT solutions > class 10th > Science - Chapter 1. NCERT solution of class for class 10th // Science // Chapter 1 - Chemical reaction and equation Chapter 1 - Chemical reaction and equation Page no. 6 Q1. Why should a magnesium ribbon be cleaned before burning in air? Ans- A magnesium ribbon be cleaned before burning in air to remove all the unwanted impurities on it and only pure magnesium can burn. Q2. Write the balanced equation for the following chemical reactions i) Hydrogen + Chlorine _______ Hydrogen chloride. ii) Barium chloride + Aluminium sulphate____ Barium sulphate + aluminium chloride. iii) Sodium + Water _____Sodium hydroxide + Hydrogen. Ans Q3. Write a balanced chemical equation with state symbols for the following reactions. i ) Solution of Barium chloride and sodium sulphate in water react to give insoluble bari...