Advertisements
Advertisements
प्रश्न
Write the chemical equation for the following reaction:
Calcium metal reacts with water.
उत्तर
\[\ce{\underset{\text{Calcium}}{Ca}+\underset{\text{Water}}{2H2O}->\underset{\text{Calcium hydroxide}}{Ca(OH)2}+\underset{\text{Hydrogen gas}}{H2}}\]
APPEARS IN
संबंधित प्रश्न
Explain the following reaction with the help of a balanced chemical equation:
Magnesium reacts with hot water.
From amongst the metals sodium, calcium aluminium, copper and magnesium, name the metal:
(i) which reacts with water only on boiling, and
(ii) another which does not react even with steam.
Name the metal which has been placed at the bottom of the reactivity series.
Complete and balance the following equation:
Na + O2 →
What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.
A metal less reactive and another metal more reactive than hydrogen are:
(a) aluminium and lead
(b) iron and magnesium
(c) copper and tin
(d) copper and 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?
Explain the following:
Reactivity of aluminium decrease if it is dipped in nitric acid.
Which property of metals is used for making bells and strings of musical instruments like Sitar and Violin?
An element X is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in the air. It reacts vigorously with water. Identify the element from the following.
