Question

B. Choose the correct answer from the options given below.
Which of the following is present in temporary hard water?

a.Calcium carbonate
b. Magnesium carbonate
c. Calcium oxide
d. Magnesium hydrogen carbonate.

2. Which of the following is present in permanent hard water?
a. Calcium hydrogen carbonate
b. Calcium carbonate
C. Magnesium sulphate
d. Magnesium bicarbonate​

Answer 1

Answer:

here is ur answer

1.c

2.a

Answer 2

Answer:

1.c 2.a

Explanation:

please dear Mark as brainliest you are so kind thanks bro