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प्रश्न
Complete and balance the following equation:
Na2O + H2O →
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उत्तर
Na2O(s) + H2O(l) → 2NaOH (aq)
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संबंधित प्रश्न
Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be:
Differentiate between metal and non-metal on the basis of their chemical properties.
Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.
Write equation for the reaction of sodium with oxygen.
With the help of examples, describe how metal oxides differ from non-metal oxides.
Describe the reaction of potassium with water. Write the equation of the reaction involved.
What happens when a metal reacts with dilute hydrochloric acid? Explain with the help of an example.
Name one metal more reactive and another less reactive than hydrogen.
Out of the following oxides, the amphoteric oxide is:
(a) Fe2O3
(b) Al2O3
(c) P2O5
(d) N2O
An element X forms two oxides XO and XO2. The oxide XO is neutral but XO2 is acidic in nature. The element X is most likely to be:
(a) sulphur
(b) carbon
(c) calcium
(d) hydrogen
The elements whose oxides can turn litmus solution blue are:
(a) carbon and sulphur
(b) sodium and carbon
(c) potassium and magnesium
(d) magnesium and sulphur
Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions?
(a) MgSO4 + Fe
(b) ZnSO4 + Fe
(c) MgSO4 + Pb
(d) CuSO4 + Fe
State and explain the reaction, if any, of the following metals with a solution of copper sulphate:
(a) Gold
(b) Copper
(c) Zinc
(d) Mercury
In a solution of lead acetate, a strip of metal M was dipped. After some time, lead from the solution was deposited on the metal strip. Which metal is more reactive, M or lead?
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
Arrange the following metals in the increasing order of their reactivities:
Copper, Zinc, Aluminium, and Iron
Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?
Which of the following property is not responsible for copper to be used as electrical conduction wires?
