Answer: (i) and (ii)
Explanation:
Buffer is a solution which resists changes in pH when small quantities of acid or alkali are added to it.
Acidic buffer is formed by combination of weak acid and salt of weak acid with strong base. Example: and
Basic buffer is formed by combination of weak base and salt of weak base with strong acid. Example: and
Thus pair of substance can be dissolved together (in the right ratio) to prepare a buffer solution is and
Baking soda is a solid.
Answer:
26.8224 Meters per Second.
Gold is an element even when it is in a solution
If a uranium atom absorbs a neutron it will be unstable, and will generally split into two fragments. This process, the splitting of a large nucleus into two smaller ones, is known as NUCLEAR FISSION.
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