Advertisements
Advertisements
प्रश्न
Which among the following alloys contain mercury as one of its constituents?
विकल्प
Stainless steel
Alnico
Solder
Zinc amalgam
उत्तर
Zinc amalgam
Explanation -
Amalgam is an alloy of mercury with other metals like zinc, gold, silver or copper etc.
APPEARS IN
संबंधित प्रश्न
Give one example each of which illustrates the following characteristics of a chemical reaction:
evolution of a gas
How will you obtain Zinc chloride from zinc.
Also give balanced equations for the reactions
What is meant by the metal reactivity series ? State its importance, (any two points).
Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals.
With reference to Water explain with suitable examples of how the reactivity of the metals could be differentiated.
Observe the following diagram and identify the type of reaction and write observation.
A metal A, which is used in thermite process, when heated with oxygen gives an oxide B, which is amphoteric in nature. Identify A and B. Write down the reactions of oxide B with HCl and NaOH.
An element A reacts with water to form a compound B which is used in white washing. The compound B on heating forms an oxide C which on treatment with water gives back B. Identify A, B and C and give the reactions involved.
A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black colour product. Identify M and black coloured product and also explain the reaction of M with oxygen.
Of the three metals X, Y and Z. X reacts with cold water, Y with hot water and Z with steam only. Identify X, Y and Z and also arrange them in order of increasing reactivity.