An ionic hydride of an alkali metal has significant covalent character and is almost unreactive towards oxygen and chlorine. This is used in the synthesis of other useful hydrides. Write its reaction with \({ Al }_{ 2 }{ Cl }_{ 6 }\)

At the home of Mr.Kumar, Dalda ghee is generally used. He is suffering from high blood pressure and diabetes. Mr.Sharma, a friend of Mr.Kumar has advised him to change from ghee to vegetable oil like mustard oil.
Dihydrogen (H₂) is used in the manufacture of vanaspati ghee by hydrogenation of polyunsaturated vegetable oils using nickel as a catalyst.
Vegetable oil \(\xrightarrow [ { H }_{ 2 } ]{ Ni } \) vanaspati ghee
Should we use vegetable oils for cooking? why?

In India, there is the shortage of drinking water. Thus, projects like rainwater harvesting are used by Green Park Association to increase the amount of underground water. Rainwater is the almost pure form of water after the heavy shower as it is, in fact, the distilled water. The first shower contains dissolved gases from the atmosphere. Being a good solvent, when it flows on the surface of the earth, it dissolves many salts in the form of hydrogen carbonate, chloride and sulphate in water which make it hard Give the values possessed by the office bearer of Green Park Association?

Scientist of UK has designed the cars, working on hydrogen fuel cells instead of petrol engines. Here hydrogen is used as sources of electrical energy i.e. a reaction of hydrogen and oxygen is used to generate electrical energy. It has many advantages over the conventional fossil fuels and electric power generation.
Give two advantages of hydrogen over fossil fuels?

Scientist of UK has designed the cars, working on hydrogen fuel cells instead of petrol engines. Here hydrogen is used as sources of electrical energy i.e. a reaction of hydrogen and oxygen is used to generate electrical energy. It has many advantages over the conventional fossil fuels and electric power generation.
What are the values possessed by scientists of UK?

How would you prepare very pure dihydrogen in the laboratory?

What mass of hydrogen peroxide will be present in 2L of a 5M solution?

Calculate the mass of oxygen which will be liberated by the decomposition of 200mL of this solution.

Complete the following reactions.
\({ H }_{ 2 }(g)+{ M }_{ m }{ O }_{ 0 }(s)\underrightarrow { \Delta } \)

Complete the following reactions.
\(CO(g)+{ H }_{ 2 }(g)\xrightarrow [ ]{ \Delta } \)

Give ion electron equations for the following reactions.
Oxidation of sulphurous acid to sulphuric acid