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प्रश्न
A metal which is neither ductile nor malleable is
विकल्प
Copper
Silver
Zinc
Aluminium
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उत्तर
Zinc
APPEARS IN
संबंधित प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Sodium is a very reactive metal. ( )
What happens when Iron nails are placed in copper sulphate solution?
Write word equations of the reactions involved.
The alloy in which one of the metals is mercury is called an ______.
Give reasons
Magnesium is used in fire works.
Give reasons
Gold is mixed with copper and nickel.
Aluminium is not used to make :
Statements given below are incorrect. Write the correct statements :
Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
Tick (√) the most appropriate answer.
Graphite is used :
State the position of the following in the periodic table:
Alkaline earth metals
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.
What is it made from? Why?
A pair of tongs.
What is it made from? Why?
Electric cables
With reference to the following metal state its use in daily life:
Magnesium
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white crystalline solid which decrepitates on heating leaving a residue which fuses with the glass and evolves two gases one of which is coloured and acidic.
Write scientific reason.
Meena’s mother uses lemon or tamarind for cleaning copper vessels turned greenish.
Give reasons for the following.
- Aluminum foils are used to wrap food items.
- Immersion rods for heating liquids are made up of metallic substances.
- Sodium and potassium are stored in kerosene.
- Mercury is used in thermometers.
Which one of the following metals do not react with cold as well as hot water?
In the following figure, you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the basis of this fact.
- ______ is a metal.
- Metals are good ______ of electricity.
