Advertisements
Advertisements
प्रश्न
Pencil lead contains
विकल्प
graphite
diamond
aluminium
sulphur
उत्तर
Graphite
APPEARS IN
संबंधित प्रश्न
Name:
a non-metal with high m.p & b.p
`Cl +e- → —`
Give the balanced reactions for the following:
Sodium is dropped in water
Make pairs of substances and their properties
| Substance | Property |
| a. Potassium bromide (KBr) | 1. Combustible |
| b. Gold | 2. Soluble in water |
| c. Sulphur | 3. No chemical reaction |
| d. Neon | 4. High ductility. |
From the list of characteristics given below, select the five which are relevant to non-metals and their compounds:
- Ductile
- Conduct electricity
- Brittle
- Acidic Oxides
- Basic Oxides
- Discharged at anode
- Discharged at cathode
- Ionic chlorides
- Covalent chlorides
- Reaction with dilute sulphuric acid yields hydrogen
- 1, 2 or 3 valence electrons
- 5, 6, 7 valence electrons
(Write the five letters corresponding to the correct characteristics).
Complete the statement given below, by filling in the blank with the correct word:
A non-metal added to swimming pools to kill germs_____.
Select the appropriate option for the following statement:
The element which is noble gas and radioactive in nature.
Identify who I am!
Carbon allotropes- _______
Tabulate the differences between metals and non-metals.
Which of the following non-metals is a liquid?
