Among alpha-nitro acetic acid (I), alpha- fluoroacetic (II), alpha-bromoacetic acid (III) and alpha-cyanoacetic acid (IV), the order of increasing acid strength is

Among alpha-nitro acetic acid (I), alpha- fluoroacetic (II), alpha-bro

1.	Among alpha-nitro acetic acid (I), alpha- fluoroacetic (II), alpha-bromoacetic acid (III) and alpha-cyanoacetic acid (IV), the order of increasing acid strength is
Answer» `III LT II lt IV lt I` `I lt II lt III lt IV` `II lt I lt III lt IV` `IV lt I lt II lt III` Solution :Electron withdrawing EFFECT decreases as `-NO_(2) gt -CN gt - F gt -Br` The ACID strength is `III lt II lt IV lt I`