Bromine water would discolour quickly by using the gas
CH4В
C2H6
C3H6
C4H10
​

C3H6
Hope it helps you

There is nothing inherently wrong with being gay. speaking generally, opposition to gays are usually judged on people's moral basis whether it be religion, experience or other factors. to conclude, there is no objective answer to this question only subjective ones that rely on people's idea of what is right and wrong.