CBSE Class-10 Science: Questions 1 - 12 of 117
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Question number: 1
Question number: 2
Question number: 3
Question number: 4
Describe in Detail
Write a note on classification of bases.
1. On the basis of their strength, bases are classified as:
Strong bases: Strong bases are those bases which completely dissociate into its ions in aqueous solutions. Example: sodium hydroxide (NaOH), potassium hydroxide (KOH). Weak bases: Weak bases are those bases which do not completely dissociate into… (66 more words) …
Question number: 5
Write in Brief
Neha has been collecting silver coins and copper coins. After few days she observed a black coating on silver coins and a green coating on copper coins. Why the coins were coated with black and green coatings? Write the chemical name of black and green coatings.