The toxic effects of water pollution are generally
a. immediate and long-lastingb. immediate and short-livedc. delayed and long-lastingd. delayed and short-lived

Option (a) is the correct answer.

Explanation:

When harmful chemicals like industry waste, used syringes, household waste etc are present in water then the water also becomes toxic in nature.

Hence, it is not suitable for drinking or usage because the chemicals present in it are absorbed by human body and thus, it can be very dangerous and harmful for the body as it may lead to immediate death or can cause a life long disease.

Thus, we can conclude that the toxic effects of water pollution are generally immediate and long-lasting.

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml