Advertisements
Advertisements
प्रश्न
what substance is graphite made?
Advertisements
उत्तर
On burning graphite in the presence of oxygen, only carbon dioxide gas is evolved proving that graphite is only made of carbon.
APPEARS IN
संबंधित प्रश्न
What are covalent compounds?
Explain the bonding in methane molecule using electron dot structure.
Choose the most appropriate answer from the following list of oxides which fit the description.
A covalent oxide of a metalloid.
Name the black substance of pencil. Will the current flow through the electrical circuit when we use the sharpened ends of the pencil to complete the circuit?
What type of bonds are present in H2 molecule? Draw their electron-dot structures.
will CS2 conduct electricity or not?
give reason for your choice.
The number of isomers formed by the hydrocarbon with molecular formula C5H12 is:
(a) 2
(b) 5
(c) 3
(d) 4
Give two example in following case:
Gaseous non polar compounds
Elements forming ionic compounds attain noble gas electronic configuration by either gaining or losing electrons from their valence shells. Explain giving reason why carbon cannot attain such a configuration in this manner to form its compounds. Name the type of bonds formed in ionic compounds and in the compounds formed by carbon. Also explain the reason why carbon compounds are generally poor conductors of electricity.
Explain the following term with example.
Alkane
Explain the following briefly:
Cl2 is a non polar molecule, while HCl is a polar molecule.
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2,8,1 |
2,8,7 |
2,5 |
1 |
Answer the following questions based on the table above:
What type of bond is formed between Y and Z.
Electrons are getting added to an element Y:
which electrode will Y migrate to during the process of electrolysis?
Acids dissolve in water and produce positively charged ions. Draw the structure of these positive ions.
Define the functional group and complete the following table.
| S.I. No. | Functional Group | Compound | Formula |
| (1) | ______________ | _______________ |
C2H5OH |
| (2) | _______________ | _______________ | CH3CHO |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Which of the following statements are correct for carbon compounds?
- Most carbon compounds are good conductors of electricity.
- Most carbon compounds are poor conductors of electricity.
- Force of attraction between molecules of carbon compounds is not very strong.
- Force of attraction between molecules of carbon compounds is very strong.
`"CH"_3 - "CH"_2 - "OH" overset("Alkaline""KMnO"_4 + "Heat")(->) "CH"_3 - "COOH"`
In the above given reaction, alkaline KMnO4 acts as
