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प्रश्न
Name a metal which can be cut with a knife :
उत्तर
Sodium
APPEARS IN
संबंधित प्रश्न
Fill in the blanks:
Metals are ________ conductors of heat and _________.
Mark ‘T’ if the statement is true and ‘F’ if it is false.
Coal can be drawn into wires. ( )
Which of the following are amphoteric oxides:
MgO, ZnO, P2O3, Al2O3, NO2
State one use of Sulphur.
State any five physical properties of metals.
Name two metals whose melting points are so low that they melt when held in the hand.
The electronic configurations of four particles A, B, C and D given below:
| A | 2, 8, 8 |
| B | 2, 8, 2 |
| C | 2, 6 |
| D | 2, 8 |
Which electronic configuration represents:
(i) magnesium atom?
(ii) oxygen atom?
(iii) sodium ion
(iv) chloride ion?
Which of the following alloys contains a non-metal as one of the constituents?
(a) brass
(b) amalgam
(c) steel
(d) bronze
Name a metal used in making electric cables
Name a non-metal that is lustrous
Match the statements in Column A, with those in Column B .
| Column A | Column B | ||
| 1 | A metal used for making high quality mirrors . | a | Chlorine |
| 2 | A metal which neither malleable nor ductile. | b | Graphite |
| 3 | A non-metal,used in the sterilsation of water. | c | Iodine |
| 4 | A non-metal, whose deficiency can lead to disease like goitre. | d | Silver |
| 5 | A non -metal which can be used as dry lubricant. | e | Zinc |
Name:
a metal with low melting and boiling points
Name:
a metal whose oxide is reduced only by carbon
Ankita bought some Glucose Powder. She felt is was adulterated with starch powder. How would she test it?
Select the appropriate option for the following statement:
The element which is noble gas and radioactive in nature.
_______ is good conductor of heat but bad conductor of electricity.
Write the name.
Nonmetal which is a good conductors of electricity.
Non-metals are non-malleable.
Reason out
Sulphur is used in the vulcanization of rubber.
