Physical and Ch...

Which of the following experimental setups is correct to test carbon dioxide gas?

What is the technical term for each of the following interconversions of the states of matter?
(i) Change from liquid to solid
(ii) Change from liquid to gas

Identify the substance 'X' in the reaction given below:

CO₂ + 'X'  CaCO₃ + H₂O

Addition of which of the following substances to water will bring about a chemical change? 

What is the chemical name of rust?

After burning a magnesium ribbon, Payal collected the ash produced and dissolved it in water. Which substance is formed and what is its nature?

Which of the following options is not an example of physical change? 

Crystallisation is an example of _______ .

Which of the following activities does not result in a chemical change? 

Which among the following is a method used to prevent the rusting of iron pipes?

Which of the following is not the correct precaution to be taken while preparing crystals of copper sulphate?

Mg + 'x' à MgO  
What is the physical state of the substance 'x' in the above reaction?

Which of the following relations is incorrect?

Which process forms a brownish layer on the exposed surface of iron materials?

When magnesium ribbon is burnt, heat and light are produced. It is an example of which type of change?