Advertisements
Advertisements
प्रश्न
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Copper displaces zinc from zinc sulphate solution. ( )
विकल्प
True
False
उत्तर
Copper displaces zinc from zinc sulphate solution. (F)
APPEARS IN
संबंधित प्रश्न
Write ‘true’ or ‘false’ for the following statement :
Silver is used to make electric cables.
Write ‘True’ or ‘False’ in front of following statement.
Magnesium is used in making light weight alloys of aluminium.
Name a metal which is not malleable :
Give the general characteristics of:
Alkali metals,
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Write name.
The device used for grinding an ore.
Write scientific reason.
Generally the ionic compounds have high melting points.
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 |
What is ductility?
Which of the following two combinations are correct?
| Metal | Gas Evolved | |
| (i) | Copper | Yes |
| (ii) | Iron | Yes |
| (iii) | Magnesium | No |
| (iv) | Zinc | Yes |
Metals and non–metals are used for making ______, ______ and ______.
