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प्रश्न
Show the formation of Na2O by the transfer of electrons.
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उत्तर
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संबंधित प्रश्न
_________ solution is blue in colour.
(a) CuSO4
(b) FeSO4
(c) ZnSO4
(d) Al2(SO4)3
Food cans are coated with tin and not with zinc because ______.
Give reasons why copper is used to make hot water tanks and not steel (an alloy of iron).
Why are metals called electropositive elements?
Name the metal which has been placed at the bottom of the reactivity series.
Complete and balance the following equation:
\[\ce{Na2O + H2O ->}\]
Complete and balance the following equation:
\[\ce{Fe_{(s)} + H2O_{(g)} ->[Red heat]}\]
Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
What happens when calcium reacts with water? Write the chemical equation of the reaction of calcium with water.
An element X reacts with hydrogen, when heated, to form a covalent hydride H2X. If H2X has a smell of rotten eggs, the element X is likely to be ______.
The elements whose oxides can turn litmus solution red are ______.
Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions?
A zinc plate was kept in a glass container having CuSO4 solution. On examining it was found that the blue colour of the solution is getting lighter and lighter. After a few days, when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and give chemical equation of the reaction involved.
What is the characteristic of the electronic configuration of noble gases?
Write the chemical equation for the following reaction:
Calcium metal reacts with water.
Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?
An alkali metal A gives a compound B (molecular mass = 40) on reacting with water. The compound B gives a soluble compound C on treatment with aluminium oxide. Identify A, B and C and give the reaction involved.
Which of the following property is not responsible for copper to be used as electrical conduction wires?
Find the odd one out:
Tungsten wire is used in electric bulbs.
