An alkali is titrated against an acid with methyl orange as indicator. Which of the following is a correct combination ?

An alkali is titrated against an acid with methyl orange as indicator.

1.	An alkali is titrated against an acid with methyl orange as indicator. Which of the following is a correct combination ?
Answer» `{:(,"Base","Acid","END POINT",),((a),"Weak","Strong","Colourless to pink",):}` `{:(,"Base","Acid","End point",),((b) , "Strong","Strong","Pinkish RED to yellow",):}` `{:(,"Base","Acid","End point",),((b) , "Weak ","Strong","Yellow to pinkish red",):}` `{:(,"Base","Acid","End point",),((b) , "Strong","Strong","Pink to colourless",):}` Solution :PH range of methyl orange is 3.1 - 4.5 . Below 3.1, it is pinkish red and above 4.5, it is yellow. Weak base has `pH gt 7`. When methyl orange is added to weak base solution, the solution becomes yellow. When the solution is titrated with a strong acid, after the end point, solution is acidic and pH is `lt ` 3.1 . Therefore solution becomes pinkish red.