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प्रश्न
Name the following:
An Alloy of copper and Zinc.
उत्तर
Brass
APPEARS IN
संबंधित प्रश्न
Name the non-metal which is used to make electrodes of dry cells.
Name one property which is characteristic of metals.
What is the nature of the oxide SO2? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.
Name the metal which is used in making thermometers.
Name a non-metal which is extremely hard.
The electronic configurations of three elements X, Y and Z are:
| X : 2 | Y : 2, 8, 7 | Z : 2, 8, 2 |
Which of the following is correct regarding these elements?
(a) X is a metal
(b) Y is a metal
(c) Z is a non-metal
(d) Y is a non-metal and Z is a metal
Write ‘True’ or ‘False’ in front of following statements.
Non-metals are poor conductors of electricity.
What do you understand by the term non-metal?
Name a non-metal which is good conductor of electricity.
State the composition and two uses of given alloy:
Brass
`N+—→ N^3-`
Name two metals which react with cold 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 |
Why do gold ornaments look new even after several years of use?
Distinguish between an ore and a metallic compound.
What are the metals that make the alloys brass and bronze?
Complete the statement given below, by filling in the blank with the correct word:
A non-metal that leaves a mark on paper _______
The atomic number of an element ‘X’ is 12. Which inert gas is nearest to X?
