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प्रश्न
_______ is good conductor of heat but bad conductor of electricity.
विकल्प
graphite
diamond
coal
iodine
उत्तर
Diamond is good conductor of heat but bad conductor of electricity.
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संबंधित प्रश्न
You are given a hammer, a battery, a bulb, wires and a switch.
- How could you use them to distinguish between samples of metals and non-metals?
- Assess the usefulness of these tests in distinguishing between metals and non-metals.
Which property of copper and aluminium makes them suitable for making electric wires?
State one use of Sulphur.
Name two physical properties of carbon in which it's behaviour is not as expected from it's classification as non-metal.
Name a metal as precious as gold
Name the metals present in the following alloys
Bronze
Fill in the blank
A chemical compound that makes up the striking heads of match sticks is ______
Name a non-metal which is liquid form at room temperature.
State two important uses of following non-metal
Uses of chlorine
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.
Which metal occurs as a halide also gives the name of their respective ore.
Which metal occurs as an oxide also gives the name of their respective ore.
The metal other than aluminium, which has a strong affinity for oxygen is ______.
Complete the statement given below, by filling in the blank with the correct word:
A non-metal that leaves a mark on paper _______
Complete the statement given below, by filling in the blank with the correct word:
A non-metal added to swimming pools to kill germs_____.
Give reason for the following:
Metals form cations while non-metals form anions.
Which non-metal is essential for our life and all living beings?
Compounds obtained from non–living sources are called ______.
Reason out
Sulphur is used in the vulcanization of rubber.
