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प्रश्न
State two important uses of following non-metal
iodine
उत्तर
Uses of iodine :
- Tincture of iodine is used for dressing wounds.
- Small quantities of iodine as sodium iodide or potassium iodide are extremely essential for the proper functioning of human body. It is used in the form of iodized salt.
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संबंधित प्रश्न
Fill in the blanks:
Phosphorus is a very _________ non-metal.
Give reasons for the following.
Aluminium foils are used to wrap food items.
For the electro-refining of copper: What is the cathode made up of?
Which property of copper and aluminium makes them suitable for making cooking utensils and boilers?
Name two non-metals which are both brittle and non-ductile.
State any five physical properties of non-metals.
Name a non-metal which conducts electricity.
The electronic configurations of three elements A, B and C are as follows:
| A | 2, 8, 1 |
| B | 2, 8, 7 |
| C | 2, 4 |
(a) Which of these element is a metal?
(b) Which of these elements are non-metals?
(c) Which two elements will combine to form an ionic bond?
(d) Which two elements will combine to form a covalent bond?
(e) Which element will form an anion of valency 1?
Name the metals present in the following alloys
Brass
Fill in the blank
Tungsten metal is a poor conductor of _______
Name one metal which is a liquid at room temperature
`N+—→ N^3-`
Name:
a metal which is brittle
Name:
two non metals which are monoatomic
Name:
the most abundant metal and the most abundant non=metal
Name:
a non metal which can form a positive ion
The metal other than aluminium, which has a strong affinity for oxygen is ______.
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.
Complete the statement given below, by filling in the blank with the correct word:
The ability of a metal to produce a reasonant sound ______.
