Advertisements
Advertisements
Question
State two important uses of following metal:
Uses of gold
Advertisements
Solution
Uses of gold :
- It is used for making jewellery and coins.
- It is used in dentistry for filling cavities in teeth
APPEARS IN
RELATED QUESTIONS
Give reasons for the following.
Copper cannot displace zinc from its salt solution.
What happens when Dilute sulphuric acid is poured on a copper plate?
Write word equations of the reactions involved.
What happens when Iron nails are placed in copper sulphate solution?
Write word equations of the reactions involved.
Name two alloys of iron. What elements are present in these alloys?
What is a thermite reaction? Explain with the help of an equation.
How are the properties of an alloy different from those of the constituent elements?
Write ‘true’ or ‘false’ for the following statement.
Iodine acts as an antiseptic in the form of a tincture of iodine.
Fill in the blank spaces by choosing the correct words from the given list.
List: amalgam, chlorine, gallium, sodium chloride, silver chloride
A solution of a metal in mercury is called ________
Name a metal which is not malleable :
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Oxygen
With reference to the following metals state their use in daily life metal:
copper
Name the following:
A metal used in flexible pipes.
Name the following:
A halogen which is a solid at room temperature.
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.
Complete the following flowchart.
Which of the following two combinations are correct?
| Metal | Gas Evolved | |
| (i) | Copper | Yes |
| (ii) | Iron | Yes |
| (iii) | Magnesium | No |
| (iv) | Zinc | Yes |
Which of the following is not a metal?
The liquid metal at room temperature ______.
Metals have high melting points.
