Question 1 : Which of the following substance will not give carbon dioxide on treatment with dilute acid?

Question 2 : Salt A commonly used in bakery products on heating gets converted into another salt B which itself is used for removal of hardness of water and a gas C is evolved. The gas C when passed through lime water, turns it milky. Identify A.

Question 3 : Which of the following phenomena occur, when a small amount of acid is added to water? (i) Ionisation (ii) Neutralisation (iii) Dilution (iv) Salt formation

Question 4 : When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved, which is utilised in the hydrogenation of oil. Name the gas evolved.

Question 5 : Salt A commonly used in bakery products on heating gets converted into another salt B which itself is used for removal of hardness of water and a gas C is evolved. The gas C when passed through lime water, turns it milky. Identify B.

Question 6 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c89273b230584979af8.JPG' /> In the above diagram, identify A on the basis of reactions involved.

Question 8 : What will be the action of the Soap solution on litmus paper?

Question 9 : One of the constituents of baking powder is sodium hydrogencarbonate, the other constituent is

Question 10 : Which of the following is the chemical formula for Plaster of paris.

Question 11 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c8a273b230584979af9.JPG' /> In the above diagram, an attempt to demonstrate electrical conductivity through an electrolyte was setup. Which of the following statement(s) is(are) correct. (i) Bulb will not glow because electrolyte is not acidic (ii) Bulb will glow because NaOH is a strong base and furnishes ions for conduction (iii) Bulb will not glow because circuit is incomplete (iv) Bulb will not glow because it depends upon the type of electrolytic solution

Question 14 : State True or False: When HCl (g) is passed through water then it forms hydronium ion in the solution due to the combination of hydrogen ion with water molecule.

Question 15 : In one of the industrial processes used for manufacture of sodium hydroxide, a gas X is formed as by product. The gas X reacts with lime water to give a compound Y which is used as a bleaching agent in chemical industry. Identify X.

Question 19 : Which of the following is the chemical formula for Bleaching powder.

Question 22 : An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?

Question 23 : In one of the industrial processes used for manufacture of sodium hydroxide, a gas X is formed as by product. The gas X reacts with lime water to give a compound Y which is used as a bleaching agent in chemical industry. Identify Y.