CBSE Class 10 CBSE Class 10 A Name the type of chemical reaction represented by the following equation: (i) CaO + H₂O → Ca(OH)₂ (ii) 3BaCl₂ + Al₂(SO₄)₃ → 3Ba(Ba) + 2AlCl₃ (iii) 2FeSo₄ + Heat → Fe₂O₃ + SO₂ + SO₃
CBSE Class 10 CBSE Class 10 (i) Write a balanced chemical equation for process of photosynthesis. (ii)When do desert plants take up carbon dioxide and perform photosynthesis?
CBSE Class 10 CBSE Class 10 Name the reducing agent in the following reaction: 3MnO₂ + 4Al → 3Mn + 2Al₂O₃ State which is more reactive, Mn or A1 and why?
CBSE Class 10 CBSE Class 10 What happens when an aqueous solution of sodium sulphate reacts with an aqueous solution of barium chloride? State the physical conditions of reactants in which reaction between them will not take place. Write the balanced chemical equation for the reaction and also mention the type of reaction
CBSE Class 10 CBSE Class 10 Giving an example list two information which make a chemical equation more useful
CBSE Class 10 CBSE Class 10 We need to balance a skeltal chemical equation. Give reason to justify the statement
CBSE Class 10 CBSE Class 10 Write balanced chemical equations to explain what happens, when (i) Mercuric oxide is heated. (ii) Mixture of cuprous oxide and cuprous sulphide is heated
CBSE Class 10 CBSE Class 10 (a) In electrolysis of water, why is the volume of gas collected over one electrode double that of gas collected over the other electrode?
CBSE Class 10 CBSE Class 10 State which of the following chemical reactions will take place or not, giving suitable reason for each
CBSE Class 10 CBSE Class 10 State the relationship between oxidation and oxidising agent in a redox reaction. Give an example of redox reaction showing the relationship between oxidation and oxidising agent
CBSE Class 10 CBSE Class 10 Decomposition reactions require energy either in the form of heat or light or electricity for breaking down the reactants. Write one equation each for decomposition reactions where energy is supplied in the form of heat, light and electrictiy
CBSE Class 10 CBSE Class 10 Identify the type of reactions taking place in each of the following cases and write the balanced chemical equation for the reactions
CBSE Class 10 CBSE Class 10 2 g of silver chloride is taken in a China dish and the China dish is placed in sunlight for sometime. What will be your observation in this case? Write the chemical reaction involved in the form of a balanced chemical equation. Identify the type of chemical reaction
CBSE Class 10 CBSE Class 10 On heating blue coloured powder of copper (II) nitrate in a boiling tube, black copper oxide, O2 and a brown gas X is formed
CBSE Class 10 CBSE Class 10 1g of copper powder was taken in a China dish and heated. What change takes place on heating? When hydrogen gas is passed over this heated substance, a visible change is seen in it. Given the chemical equations of reactions, the name and the colour of the products formed in each case
CBSE Class 10 CBSE Class 10 Identify the type of each of the following reactions. Also write balanced chemical equation for each reaction
CBSE Class 10 CBSE Class 10 Mention with reason the colour changes observed when: (i) silver chloride is exposed to sunlight. (ii) copper powder is strongly heated in the presence of oxygen. (iii) a piece of zinc is dropped in copper sulphate solution
CBSE Class 10 CBSE Class 10 While studying the double displacement reaction, the solutions of barium chloride and sodium sulphate are mixed together
CBSE Class 10 CBSE Class 10 Rahul has been collecting copper coins and silver coins. One day he observed a green coating on copper coins and a black coating on silver coins. State the chemical phenomenon responsible for these coating and also write chemical names of each coating
