An element x reacts with oxide to from oxide,`X_2O` which dissolves in water and turns red litmus solution blue, give the nature of oxide and indicate X is metal or non-metal.

An element 'A' reacts with oxygen to form an oxide of the formula A_2O which dissolves in dil. HCl. The oxide formed turns red litmus paper blue. Is the element a metal or a non-metal?

An element 'A' reacts with oxygen to form an oxide of the formula A_2O which dissolves in dil. HCl. The oxide formed turns red litmus paper blue. Write the formula of A_2O and its reaction with dil. HCl.

What is the nature of non-metal oxide?

An element A reacts with water to form a compound B which is used in white washing. The compound B on heating forms an oxide C which on treatment with watr gives back B. identify A, B and C and give the reacitons involved.

By dissolving metal oxide in water, we get

An element, A from two oxides AO and AO_2 AO is neutral and AO_2 is acidic: indicate whether A is metal or non-metal

Solid calcium oxide reacts vigourously with water to form calcium hydroxide accompanied by liberation of heat. This process is called slaking of lime. Calcium hydroxide dissolves in water to form its solution called lime water. Which among the following is true about slaking of lime and the solution formed? (i) It is an endothermic reaction (ii) It is an exothermic rection (iii)The pH of the resulting solution will be more than seven (iv)The pH of the resulting solution will be less than seven

A water soluble compound 'X' of sodium on reacting with dil. H_2SO_4 released a colourless gas accompanied by brisk effervescence. When the gas was passed through water, the solution obtained turned blue litmus solution red. On bubling the gas through lime water, it initially became milky and the milkness disappeared when the gas was passed in excess. Identify the substance 'X' and write the chemical equation for the reactions involved.

An element M forms an oxide M_2O_3 . Which is acidic in nature. State whether the element M is a metal or a non-metal.

A substance X, which is an oxide of a group 2 element, is used intensively in the cement industry. This element is presented in bones also. On treatment with water it forms a solution which turns red litmus blue. Identify X and also write the chemical reactions involved.