Advertisements
Advertisements
प्रश्न
Which of the following metals can displace the other two metals from their salt solutions?
विकल्प
Zinc
Iron
Copper
Advertisements
उत्तर
Zinc
Explanation:
Zinc is most reactive among the three metals and copper is the least reactive metal. Reactivity of iron is in between zinc and copper. So, zinc metal can displace the other two metals from their salt solutions.
APPEARS IN
संबंधित प्रश्न
State one use of Mercury.
Fill in the following blank with suitable word:
Brass is an alloy of copper and .........
Write ‘true’ or ‘false’ for the following statement.
Iodine acts as an antiseptic in the form of a tincture of iodine.
Statements given below are incorrect. Write the correct statements :
Bronze is a mixture of 10% copper, 80% zinc and 10% tin.
Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:
Water.
Match the alloys given in column I to the uses given in column II :
| Column I | Column II |
| (i) Duralumin | A. Electrical fuse |
| (ii) Solder | B. Surgical instruments |
| (iii) Brass | C. Aircraft body |
| (iv) Stainless Steel | D. Decorative articles |
With reference to the following metals state their use in daily life metal:
iron
Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.
Metals are ______ conductors of heat and electricity.
Match the following
| i. | Softest metal | a. | Copper |
| ii. | Hardest metal | b. | Sodium |
| iii. | Hardest non–metal | c. | Osmium |
| iv. | Ductility | d. | Diamond |
