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प्रश्न
Select the odd one out and justify your answer.
Zn, Fe, Mg, and Na
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उत्तर
Na
The other metals react with dil. HCl liberating hydrogen gas, while sodium reacts violently with acid.
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संबंधित प्रश्न
Complete the following word equation:
Calcium + water → calcium hydroxide + _________
Based on the reactions of water on metals, arrange the following metals in increasing order of reactivity: iron, sodium, magnesium, zinc, calcium
Name two alkalies that can displace hydrogen. Give balanced equations for the same. Why are the metals you have used considered to have a unique nature?
Metal in the powdered form reacts very slowly with boiling water, but it decomposes in steam. Name the metal.
Select the odd one out and justify your answer.
Fe, Pb, Al and Zn
Which of the following metals does not give hydrogen with acids?
Correct the following statement:
Conc. H2SO4 reacts with zinc to liberate hydrogen.
Using dilute sulphuric acid how would you differentiate between:
Copper and magnesium
How would you identify the gaseous products evolved.
‘Magnesium reacts with very dilute nitric acid at low temperatures liberating hydrogen.’ Give reasons.
Name the following.
The salt formed when aluminium reacts with potassium hydroxide, during the preparation of hydrogen from alkalis.
