Advertisements
Advertisements
प्रश्न
State two important uses of following metal:
Uses of zinc
Mention some important uses of zinc.
Advertisements
उत्तर १
- It is used for galvanizing iron sheets to prevent iron from rusting.
- It is used for making alloys such as brass and bronze.
उत्तर २
- Galvanisation, which is the process of applying a thin layer of zinc to iron sheets to prevent corrosion, is a common application for zinc.
- Galvanic cell electrodes are made from zinc plates and rods.
- Zinc dust and granulated zinc serve as reducing agents. Zinc dust is used in manufacturing dyes, perfumes, and drugs.
- It is employed in Parke’s technique for extracting silver.
- Several alloys, such as brass, German silver, and delta metal (Cu 60%, Zn 38.2%, Fe 1.8%), which are used to make ship propellers, bearings, and valves, are made with it.
Notes
Students should refer to the answer according to their questions.
APPEARS IN
संबंधित प्रश्न
Give reasons for the following.
Sodium and potassium are stored in kerosene.
Give a reason for the following:
Alkali metals are good reducing agents.
Which property of ‘solder’ alloy makes it suitable for welding electrical wires?
Name one ore of manganese. Which compound of manganese is present in this ore? Also write its chemical formula.
Give reasons
Graphite is used in the leads of pencils
Statements given below are incorrect. Write the correct statements :
Aluminium is best conductor of electricity.
State the position of the following in the periodic table:
Aluminium
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Hydrochloric acid,
Write name.
The oxide that forms salt and water by reacting with both acid and base.
What was Mendeleev's basis for the classification of elements?
With reference to the following metals state their use in daily life metal:
iron
With reference to the following metals state their use in daily life metal:
Zinc
Give a reason why a green deposit is seen on the surface of an article of copper
Complete the following flowchart.
Can you store pickle in an aluminium utensil? Give reason.
A is a reddish-brown metal, which combines with O2 at < 1370 K gives B, a black coloured compound. At a temperature > 1370 K, A gives C which is red in colour. Find A, B, and C with reaction.
Which of the following two combinations are correct?
| Metal | Gas Evolved | |
| (i) | Copper | Yes |
| (ii) | Iron | Yes |
| (iii) | Magnesium | No |
| (iv) | Zinc | Yes |
Which one of the following four metals would be displaced from the solution of its salts by other three metals?
Name two major non-metals which are present in fertilisers and enhance the growth of plants.
Why do metals appear shiny?
