Question

What is the product formed when zinc reacts with strong $NaOH$?
A.Zinc oxide
B.Zinc hydroxide
C.Sodium zincate
D.None of the above

Answer 1

Hint: Most metals do not react with strong base. Here also we are given with the metal (i.e. zinc) and a strong base (i.e.$NaOH$) . But zinc is an exception because zinc can react with strong bases and form a sodium zincate.

Complete step by step solution:
First of all let us talk about the reactivity of metals.
Most metals do not react with a strong base. Here also we are given with the metal (i.e. zinc) and a strong base (i.e.$NaOH$). But zinc is an exception because zinc can react with strong bases and form a sodium zincate with hydrogen gas.
The reaction is as follows: $Zn + 2NaOH \to N{a_2}Zn{O_2} + {H_2}$.
Zinc is a neutral compound which can react with acid as well as with bases.

So, option c is correct.

Additional information:
Metals: Metals are solid at room temperature except mercury which is liquid at room temperature. They are shiny in nature. The property of shiny nature is known as metallic lustre. They are silvery-grey in colour. They are hard to cut but sodium and potassium are soft as they can cut by knife. They are malleable (which can be drawn into thin sheets). they are ductile (which can be drawn into wires). They are good conductors of heat and electricity (they allow heat and electricity to pass through them). They can bear high tensile strength. They have high densities. They have high melting and boiling points. They are sonorous in nature (which produces sound when struck hard).
Non-Metals: Non-Metals may be solid, liquid or gas at room temperature. They are not shiny in nature. The property of shiny nature is known as metallic lustre. So they are not lustrous in nature. They are different in colour. For example: sulphur is yellow, phosphorus is white or red. They are soft except diamond which is the hardest substance on the earth. They are non-malleable (which can not be drawn into thin sheets). They are non-ductile (which can not be drawn into wires). They are bad conductors of heat and electricity (they do not allow heat and electricity to pass through them). They can not bear high tensile strength. They have low densities. They have low melting and boiling points. They are non-sonorous in nature (which do not produce sound when struck hard).

Note: There are so many exceptions for the physical properties of metals and non-metals. For example: generally metals are hard to cut but sodium and potassium are very soft that they can be cut by knife. Generally non-metals are light but diamond is the hardest substance which is known to us.