What acids are present in the following substances ? Collect the information and write: Substances: Vinegar, Lemon or orange, State cheese Buttered milk or curd, Spinach or Tomato.

Record your observations when you test the following substances with the indicators Phenolphthalein and Methyl Orange. Substances : Cold drink, Lemon Juice, Grape Juice, Bathing soap, detergent soap, Lime water and Sugar.

You are asked to find out the acids present in the substances? placed in front of you. Write the names of the acids present in them by collecting information from any source available to you. Substances placed in front of you : Apples, Tea, Olive oil and fats.

Take the following substances and test them with Phenolphthalein and Methyl orange solutions. Draw a table and record your observations. Substances Orange, Tomatoes, Baking soda, Mineral water, Vinegar, Salt water, Shampoo, Washing soda.

Grapes, Palm oil, Amla (emblica fruit) and Urine are put before you. You are asked to give the information about the acids that are present in those substances. Collect the information and record in a table.

Collect powdery substance of the spots on leaves and observe under microscope. Write down what you observed.

Citric acid, vinegar, curd, lactic acid, lemon, acetic acid. These are some of the food items and the acids present in them. Rearrange the food items with their acids in tabular form.

What changes in colour take place in the indicators Phenolphthalein and Methyl Orange when you test with the following substances. Spirit, Saliva, Cucumber, Ridgegourd, Kheerd, Butter milk, Milk.

Write the following chemical reaction including the physical states of the substances and balance the chemical equation. Sodiumhydroxides reacts with hydrochloric acid to form sodium chloride and water

Balance the chemical equation by including the physical states of the substances for the following reactions. c) Zinc pieces react with dilute hydrochloric acid to liberate hydrogen gas and forms zinc chloride.

Write the following chemical reaction including the physical states of the substances and balance the chemical equation. Barium chloride reacts with liquid sodium sulphate to leave barium sulphate as precipitate and also form liquid sodium chloride