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प्रश्न
Complete the statement given below, by filling in the blank with the correct word:
A non-metal which allows an electric current to pass through it ______.
उत्तर
A non-metal which allows an electric current to pass through it graphite.
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संबंधित प्रश्न
Which of the following statements is correct?
Give reasons for the following.
Aluminium foils are used to wrap food items.
If an element has a low ionization energy then it is likely to be ______________ (metallic / non metallic).
Name the non-metal which is used to preserve food materials.
State one use of Nitrogen.
Name the metal which is used in making thermometers.
Name two physical properties of sodium in which it's behaviour is not as expected from it's classification as metal.
Fill in the blank.
A non-metal used to purify water is ______.
Name one metal which is a liquid at room temperature
What is an amalgam? How does an amalgam different from an alloy?
Name the non-metal present in abundance in the earth's crust.
Explain how the activity series accounts for each of the following:
reaction with water
The table below compares some properties of metals and non-metals. Write down the missing
statements (i) to (iv) :
| Metals | Non-metals |
| (i) ………………….. | Poor conductors of heat |
| (ii) Malleable | …………………… |
| (iii) Form positive ions | …………………… |
| (iv) ………………… | Form acidic oxides |
How many valence electrons are present in:
(i) metals and
Which metals do not corrode easily?
Distinguish between an ore and a metallic compound.
Complete the table.
| Property of metal | Use in everyday life |
| i. Ductility | |
| ii. Malleability | |
| iii. Conduction of heat | |
| iv. Conduction of electricity | |
| v. Sonority |
Identify the odd term.
Reason out
Mercury is the only metal that is liquid at room temperature.
