2. Questions Bank
  3. JEE Main & Advanced
  4. Chemistry
  5. Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ

JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Topic Test - Some Basic Concepts of Chemistry (8-5-21)

  • question_answer
    The percentage of oxygen in \[NaOH\] is

    A) 40

    B) 60

    C) 8

    D) 10

    Correct Answer: A

    Solution :

    [a] \[\because \]   40gm NaOH contains 16gm of oxygen
                            \[\therefore \]  100gm of NaOH contains \[\frac{16}{40}\times 100\]=40% oxygen.


You need to login to perform this action.
You will be redirected in 3 sec spinner