Class 10 CHE -ACIDS& BASE Here the Quick 5 Questions test for Assessment 1. Phenolpthalein is type of indicator. 2. Phenolphthalein is a synthetic indicator and its color in acidic and basic solutions, respectively are: blue and red Colorless and pink red and blue pink and colorless None 3. Metals generally react with dilute acids to produce hydrogen gas . Which one of the following metals does not react with dilute hydrochloric acid? iron magnesium copper aluminium None 4. How many grams of alkali NaOH is neutralized by 6.1 grams of benzoic acid C6H5COOH 4g 2g 12.2g 6.1g None 5. 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 base on glass produces heat. Salt formed after reaction acts on glass to produce heat. Reaction between the acid and the base produces heat. Action of the acid on glass produces heat 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.
