Advertisements
Advertisements
प्रश्न
A metal with melting point less than 50°C is
पर्याय
Gallium
Iron
Gold
Aluminium
Advertisements
उत्तर
Gallium
APPEARS IN
संबंधित प्रश्न
A metal having low melting point is ______ but a non-metal having very high melting point is ______.
The atomic number of an element X is 12.
- What must an atom of X do to attain the nearest inert gas electron configuration?
- Which inert gas is nearest to X?
Fill in the blank
A metal that gives dazzling effect to crackers when they explode is ______
State two important uses of following metal:
Uses of gold
Give the general characteristics of:
Alkali metals,
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Write name.
Molecular formula of the common ore of aluminium.
Write scientific reason.
Anodes need to be replaced from time to time during the electrolysis of alumina.
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 it made from? Why?
Electric cables
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:
Silver
Name the following:
The most reactive halogen.
Soft metal : Na : : hard metal : _______
Halogen reacts with acid.
When a copper coin is dipped in the solution of silver nitrate, it shows a lustre on its surface. Explain this process with the help of a chemical equation.
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.
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.
Metals and non–metals are used for making ______, ______ and ______.
Which metals are not solid at room temperature?
Compare the conductivity of metals and non–metals.
