A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?

Open in App

Solution

A bag of cement that has been wet due to rain during the night becomes hard. This is because the cement hardens up after absorbing water.

Hence, the changes that have occurred in the cement could not be reversed.

Suggest Corrections

Similar questions

Question 2

Which of the following changes cannot be reversed?
(a) Hardening of cement
(b) Freezing of ice cream
(c) Opening a door
(d) Melting of chocolate

A cement company earns a profit of Rs 8 per bag of white cement sold and a loss of Rs 5 per bag of grey cement sold.

(a) The company sells 3, 000 bags of white cement and 5,000 bags of grey cement in a month. What is its profit or loss?

(b) What is the number of white cement bags it must sell to have neither profit nor loss, if the number of grey bags sold is 6,400 bags.

Join BYJU'S Learning Program

Explore more

Join BYJU'S Learning Program