Class 10 CHE -ACIDS& BASE Here the Quick 5 Questions test for Assessment 1. Turmeric is a natural indicator. On adding its paste to acid and base separately, which colour would be observed ? Pink in acid and yellow in base Red in acid and blue in base Yellow in acid and red in base Yellow in both acid and base None 2. Tooth decay can be cured by a toothpaste by a reaction called as : 3. A student was mixing an acid and a base in the laboratory. He observed that the test tube became hot after mixing. What was the reason for this increase in temperature? Action of the acid on glass produces heat Action of the base on glass produces heat. Salt formed after reaction acts on glass to produce heat. Reaction between the acid and the base produces heat. None 4. Since there are 10 water molecules in washing soda, hence it is known as: sodium bicarbonate decahydrate sodium decahydrate sodium carbonate decahydrate sodium bicarbonate nanohydrate None 5. What is the pH of a most acidic solution among the following? 9 6 10 1 None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
