EASY
11th CBSE
IMPORTANT
Earn 100

In the calgon process of softening of water, which of the following is used?

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Important Questions on Hydrogen

MEDIUM
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 9 - Hydrogen>Competition Focus>Q II
The reagent commonly used to determine hardness of water titrimetrically is
MEDIUM
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 9 - Hydrogen>Competition Focus>Q II
The hardness of water sample containing 0.002 mole of magnesium sulphate dissolved in a litre of water is expressed as.
MEDIUM
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 9 - Hydrogen>Competition Focus>Q II
The molecular formula of a commercial resin used for exchanging ions in water softening is C8H7SO3Na (Mol. wt. of 206). What would be the maximum uptake of Ca2+ ions by the resin when expressed in mole per gram resin?
EASY
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 9 - Hydrogen>Competition Focus>Q III
Which of the following compounds is a peroxide?
MEDIUM
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 9 - Hydrogen>Competition Focus>Q III
How many peroxy linkages are present in CrO5?
MEDIUM
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 9 - Hydrogen>Competition Focus>Q III
The inorganic compound obtained by the auto-oxidation of 2-alkylanthraquinol is
MEDIUM
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 9 - Hydrogen>Competition Focus>Q III
Commercial sample of H2O2 is labelled as 10 V. Its % strength is nearly. 
MEDIUM
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 9 - Hydrogen>Competition Focus>Q III
30 volumes H2O2 means