EASY
11th Odisha Board
IMPORTANT
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What is borax bead test?

Important Questions on Group-13 Elements

EASY
11th Odisha Board
IMPORTANT
Which one of the following is an ore of aluminium?
MEDIUM
11th Odisha Board
IMPORTANT
What happens when orthoboric acid is heated?
EASY
11th Odisha Board
IMPORTANT
Write the formula of orthoboric acid.
MEDIUM
11th Odisha Board
IMPORTANT
How is orthoboric acid prepared?
MEDIUM
11th Odisha Board
IMPORTANT
What happens when orthoboric acid is heated?
MEDIUM
11th Odisha Board
IMPORTANT
What is borax? Give two uses of borax.
MEDIUM
11th Odisha Board
IMPORTANT
Write the preparation of orthoboric acid from borax.
EASY
11th Odisha Board
IMPORTANT
To which block of the periodic table B and Al belong? Explain why?