Advertisements
Advertisements
प्रश्न
Match the columns.
| Group A | Group B |
| 1. Making sheets of metals | a) Sonority |
| 2. Making metal utensils | b) Malleability |
| 3. Making Copper wires | c) Good conductor of heat |
| 4. Making bells from metal | d) Ductility |
उत्तर
| Group A | Group B |
| 1. Making sheets of metals | b) Malleability |
| 2. Making metal utensils | c) Good conductor of heat |
| 3. Making Copper wires | d) Ductility |
| 4. Making bells from metal | a) Sonority |
APPEARS IN
संबंधित प्रश्न
Give reasons for the following.
Aluminium foils are used to wrap food items.
Write a balanced chemical equation for the reaction of zinc with potassium hydroxide solution.
Name the most abundant non-metal in the earth's crust.
Name the non-metal which is used as a rocket fuel (in liquid form).
Which of the following are amphoteric oxides:
MgO, ZnO, P2O3, Al2O3, NO2
State one use of Carbon (as Graphite).
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 statement.
Stainless steel is used for making power transmission wires.
What do you understand by the term non-metal?
Define metal and non-metal on the basis of electron loss or gain.
`N+—→ N^3-`
Name:
a metal which is brittle
Distinguish between an ore and a metallic compound.
Why is hydrogen kept in the metal activity series?
How are metals like sodium, potassium, and calcium obtained? Give equations.
Differentiate between metals and non-metals with reference to –
(a) number of electrons in outer or valence shell
(b) formation of cation and anion
(c) reaction with dilute acids.
Complete the statement given below, by filling in the blank with the correct word:
The ability of a metal to produce a reasonant sound ______.
Select the appropriate option for the following statement:
The element which is a noble metal.
Alloys are homogeneous mixtures of a metal with a metal or non-metal. Which among the following alloys contain non-metal as one of its constituents?
Match the following:
| 1. | Non-metals | a. | Silicon |
| 2. | Metals | b. | fire extinguisher |
| 3. | Metalloids | c. | dull and soft |
| 4. | Oxygen | d. | hard and shiny |
| 5. | Water | e. | supports fire |
