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प्रश्न
With reference to the physical properties of metals and non-metals, state the following exception.
A non-metal which has low tensile strength
उत्तर
Phosphorus
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संबंधित प्रश्न
Classify the following elements into metals, non–metals and metalloids: C, Mg, Si, S, Hg, As.
Give the name and formulae of two acidic oxides.
Which property of copper and aluminium makes them suitable for making cooking utensils and boilers?
Write the name and formulae of a non-metal hydride.
Name one property which is characteristic of metals.
Name two non-metals which are both brittle and non-ductile.
Metals are said to be shiny. Why do metals generally appear to be dull? How can their brightness be restored?
State any three differences between the physical properties of metals and non-metals.
Name a non-metal that is used for cancer therapy
State two important uses of following non-metal
Uses of oxygen
Distinguish between metals and non metals on the basis of:
(i) ion formation, (ii) discharge of ions, (iii) nature of oxide formed, (iv) oxidizing and reducing property, (v) reaction with acids.
`Mg +H_2SO_4 → —+ — `
Name:
the most abundant metal and the most abundant non=metal
Make pairs of substances and their properties
| Substance | Property |
| a. Potassium bromide (KBr) | 1. Combustible |
| b. Gold | 2. Soluble in water |
| c. Sulphur | 3. No chemical reaction |
| d. Neon | 4. High ductility. |
How are metals like sodium, potassium, and calcium obtained? Give equations.
Give reason for the following:
Rusting reduces the structural strength of iron.
Select the appropriate option for the following statement:
The element which shows properties of both metals and non-metals.
Diamond is a hard substance.
A form of non-metal which has high ductility is
The composition of aqua-regia is
