MEDIUM
11th CBSE
IMPORTANT
Earn 100

Give the composition and uses of the following alloy:
Magnalium

Important Questions on Some p-Block Elements

EASY
11th CBSE
IMPORTANT
Give the composition and uses of the following alloy.
Duralumin
EASY
11th CBSE
IMPORTANT
List some uses of boron and its compounds.
EASY
11th CBSE
IMPORTANT
Name the elements present in group 14. What is their general valence configuration?
HARD
11th CBSE
IMPORTANT
Account for the following:
C and Si are tetravalent but GeSn and Pb show divalency.
HARD
11th CBSE
IMPORTANT
Account for the following:
CCl4 is resistant to hydrolysis.
HARD
11th CBSE
IMPORTANT
PbCl4 is less stable than SnCl4 but PbCl2 is more stable than SnCl2. Justify.
HARD
11th CBSE
IMPORTANT
Give two characteristic differences between C and Si based on the absence of d-orbitals in its valence shell.
HARD
11th CBSE
IMPORTANT
What is catenation? How does catenation vary in the 14th group?