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प्रश्न
Name a metal that is most malleable
उत्तर
Pure gold
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संबंधित प्रश्न
Which of the following statements is correct?
Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties
| Properties | Metals | Non-metals |
| 1. Appearance | Lustrous | Dull |
| 2. Hardness | Hard | Soft |
| 3. Malleability | Can be beaten into thin sheets | Cannot be beaten into thin sheets |
| 4. Ductility | Can be drawn into wires | Cannot be drawn into wires |
| 5. Heat Conduction | Good conductors of heat | Poor conductors of heat |
| 6. Conduction of Electricity | Good conductors of electricity | Poor conductors of electricity |
Choose the correct answer from the options given below :
The two main metals in Bronze are:
(A) Copper and zinc
(B) Copper and lead
(C) Copper and nickel
(D) Copper and tin
Give the name and formulae of two basic oxides.
Name two metals which are used for making jewellery and to decorate sweets.
Choose the acidic oxides, basic oxides and neutral oxides from the following:
Na2O; CO2; CO; SO2; MgO; N2O; H2O.
Which of the following are amphoteric oxides:
MgO, ZnO, P2O3, Al2O3, NO2
State one use of Nitrogen.
Name a metal used in making electric cables
Tick (√) the most appropriate answer.
Sodium amalgam is prepared by dissolving sodium in :
Name:
a metal with dull appearance
Explain how the activity series accounts for each of the following:
reaction with water
Distinguish between a mineral and an ore.
Distinguish between the physical properties of metals and non-metals with reference to:
(a) lusture (b) malleability (c) ductility (d) tensile strength (e) sonority (f) conduction of heat and electricity (g) melting and boiling point (h) density.
With reference to the physical properties of metals and non-metals, state the following exception.
A non-metal which conducts electricity.
Complete the statement given below, by filling in the blank with the correct word:
The ability of a metal to produce a reasonant sound ______.
Give reason for the following:
Metals form cations while non-metals form anions.
Oxygen, hydrogen, and sulphur are examples for
Generally, non-metals are not lustrous. Which of the following non-metal is lustrous?
