☛ 0-25 dB - Hearing with normal limits
☛ 26-40 dB - Mild hearing loss
☛ 41-55 dB - Moderate hearing loss
☛ 56-70 dB - Moderately severe hearing loss
☛ 71-90 dB - Severe hearing loss
☛ 91+ dB - Profound hearing loss
Give the mathematical expression to calculate or measure the percentage of ionic Character.
Who proposed VSEPR theory? What does it explain?
In water molecule the bond angle decreases from 109.28 to 104.5, why this does happens?
Define Hybridization.
Which is the most Abundant Alkaline earth element?
In NH3 molecule, the bond angle decreases from 109.28 to 107.3 why does it happen.
What is the Chemical formula for Epsom salt?
Name the family of third ‘A’ group elements
Give the formula for baking soda.
Dolomite is the ore of which element
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