Advertisements
Advertisements
प्रश्न
______ is the only non-metal which conducts electricity.
उत्तर
Graphite is the only non-metal which conducts electricity.
APPEARS IN
संबंधित प्रश्न
Give an example of a metal which can be easily cut with a knife.
Which of the following can be beaten into thin sheets?
State any five physical properties of non-metals.
The electronic configurations of three elements A, B and C are as follows:
| A | 2, 8, 1 |
| B | 2, 8, 7 |
| C | 2, 4 |
(a) Which of these element is a metal?
(b) Which of these elements are non-metals?
(c) Which two elements will combine to form an ionic bond?
(d) Which two elements will combine to form a covalent bond?
(e) Which element will form an anion of valency 1?
Name a metal as precious as gold
The noble gas used in advertising signboards is
Statements given below are incorrect. Write the correct statements :
Chlorine gas is used in the manufacture of sulphuric acid.
What are metalloids: Give examples.
Explain how the activity series accounts for each of the following:
reaction with water
Three experiments to study the process of rusting are given below. Observe the three test tubes and answer the following questions.
- Why the nail in the test tube 2 is not rusted?
- Why is the nail in the test tube 1 is rusted highly?
- Would the nail in the test tube 3 get rusted?
