Advertisements
Advertisements
प्रश्न
Although metals form basic oxides, which of the following metals form an amphoteric oxide?
विकल्प
Na
Ca
Al
Cu
Advertisements
उत्तर
Al
Explanation -
Out of all the given options, aluminium forms an amphoteric oxide Al2O3, which can both act as an acid or a base.
APPEARS IN
संबंधित प्रश्न
State the reason to explain why covalent compounds "have low melting and boiling points."
Name the hardest natural substance known.
What type of bonds are present in water molecule? Draw the electron-dot structure of water (H2O).
Give one example of a molecule containing a single covalent bond.
Give one example of a molecule containing a triple covalent bond.
Friedrich Wohler converted an inorganic compound into an organic compound in the laboratory.
Write the name and formula of organic compound formed.
will CCl4 conduct electricity or not?
give reason for your choice.
Which inert gas does the Cl atom in HCl resemble in electron arrangement?
Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of nitrogen, N2, is formed from two nitrogen atoms. What name is given to this type of bonding? (Atomic number of nitrogen is 7)
Draw the electron-dot structure of NH3 and state the type of bonding.
Explain the following:
polar covalent compounds electricity.
Complete the following:
When the nuclei of two different reacting atoms are of ______ mass, then a bond so formed is called ______ covalent bond. (equal, unequal, polar, non-polar)
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.
Acids dissolve in water and produce positively charged ions. Draw the structure of these positive ions.
Name two carbon compounds used in day-to-day life.
Write an Explanation.
Alkyne
Give an example for each of the following statement.
Formation of coordinate covalent bond between NH3 ➝ BF3 molecules
`"CH"_3 - "CH"_2 - "OH" overset("Alkaline""KMnO"_4 + "Heat")(->) "CH"_3 - "COOH"`
In the above given reaction, alkaline KMnO4 acts as
Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
