1.

What us acid ?

Answer» Yeah there r 3 concepts but at present in calss 10 we use arrhenius concept
It has three concepts ...Arrhenius , brinsted-lowry , & lewis concept
Acid can be defined in various ways according to different concepts and every definition is not the perfect one
H2O has pH 7 ...bt it is acid & base also !! So wrong
Which show ph value less than 7
Ohk ??
A substance with pH less than 7
Put H2O on litmus ...it is acid but doesn\'t change colour of litmus ...so wrong priyanshi
Ayush aaj aap mere kisi baat ka reply kyu nhi kr rhe
Is my answer is correct
Ayush.
Alwayscool give right ans then u will know my class !
Kon???
Kis class ka hai bhai tu
A substance which turns blue litmus into red.
Think then ans it
is*


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