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प्रश्न
Write ‘true’ or ‘false’ for the following statement.
Iodine acts as an antiseptic in the form of a tincture of iodine.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Copper displaces zinc from zinc sulphate solution. ( )
State one use of Copper.
What is an alloy? How is an alloy made?
For the reduction of metal oxide, suggest a reducing agent other than carbon.
Mention two uses of the following metals and non-metals
Oxygen
Give reasons
Magnesium is used in fire works.
Give reasons
Gold is mixed with copper and nickel.
Give two uses of Germanium
Write name.
Molecular formula of the common ore of aluminium.
Write scientific reason.
Sodium is always kept in kerosene.
When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time. Why does this happen? Write the chemical equation.
Name the following:
The most reactive halogen.
Write scientific reason.
Meena’s mother uses lemon or tamarind for cleaning copper vessels turned greenish.
When a copper coin is dipped in the solution of silver nitrate, it shows a lustre on its surface. Explain this process with the help of a chemical equation.
Why are bells made of metals?
The ability of metals to be drawn into thin wire is known as
The metal can be cut with a knife ______.
The typical shine of metals is called ______.
Metals have high melting points.
Why do metals appear shiny?
