Chemical Reaction

A lustrous white silver plate , is exposed to the atmosphere for several days. Which of the following statement is incorrect?

To an aqueous solution of lead nitrate , in a beaker, an aqueous solution of potassium iodide is added. Choose the correct statements .................

1. a yellow precipitate of lead iodide is formed
2. this is an example of double decomposition reaction
3. the resultant mixture is a colourless solution
4. this is an displacement reaction

To a pinch of powdered calcium carbonate in a test tube, a few drops of dilute hydrochloric acid is added which of the following statement is correct ..............

1. chlorine gas is liberated
2. calcium carbonate and hydrochloric acid are the reactants
3. calcium chloride carbondioxide and H₂O are the products
4. no change is observed

Which of the following is a decomposition reaction?

Choose the combination reaction ............

Identify the double decomposition reaction ....................

Fe₂O₃ + 2Al  Al₂O₃ + 2Fe₂. This reaction is an example of .................

Choose the exothermic reaction from the following ..............

In a redox reaction ...............

During a chemical reaction which takes place in solution, .........................

Choose the correct statement ........................

In which of the following , the rate of reaction is faster?

Consider acetic acid and hydrochloric acid. Choose the correct statement.

You have two solutions of hydrochloric acid solution A contains 36.5 g of hydrochloric acid is one litre of the solution. Solution B contains 3.65g hydrochloric acid is one litre of the solution. Among solution A and B ...................

Which of the following react with hydrochloric acid but not with sodium hydroxide?

Which of the following reactions is not feasible/

Lemon juice has pH 2. Tomato juice has pH 4. Toothpaste has a pH 9. Choose the correct statement

A solution turns red litmus blue. Its pH would be ..............

Which of the following is a characteristic of an acid salt?

The formation of calcium hydroxide from calcium oxide and water is an example of ........................ reaction

the reaction between an aqueous solution of lead nitrate and dilute hydrochloride in ...................... reaction.

The reaction between aqueous solution of sodium sulphate and barium chloride is ...................... reaction.

The decomposition of potassium chlorate is faster in the presence of manganese dioxide. Manganese dioxide acts as a ..................

.......................... react faster in dilute hydrochloric acid.

A red litmus paper is dipped in moist chlorine . Its colour ..............

A neutral solution will have pH ..............

Among distilled water and 1 M NaOH, the one having the maximum pH is ............

The gas obtained when crystals of ammonium dichromate is heated in ...............

........................ will react with dilute hydrochloric acid faster than marble chips.

Magnesium ribbon reacts slower in ..................... than in hydrochloric acid.

An example of an organic acid is .......................

The number of hydrogen ions per molecule in a tribasic acid is ............

The constituent present in baking powder is .......................

The pOH of a solution containing [OH^-] concentration 10^-3 M is .....................

A solution containing sodium hydroxide has a concentration 1.0 x 10^-9 M. The pH of the solution is ........................

The acid which has an approximate pH range 2.2 to 2.4 is .......................

The ideal pH value of the blood is ...............

Cu(OH)Cl is an example of ...................

An aqueous of magnesium oxide is .................

Reduction involves addition of ....................

Combustion reaction are ........................... reactions.

On heating the green colour copper carbonate changes into ...................... colour resulting the formation of copper oxide.

If the value of pOH of a substance is 3, its pH is ...............

An example for strong acid is ..................

The acid used in the preparation of cool drinks is ..............

The alkali that is used as medicine for stomach troubles is ..............

...................... is used to grease stains from clothes.

In a particular chemical reaction, two electrons are gained that is known as a/an ....................

If heat is evolved in a particular chemical reaction, it is said to be an ...................

When glucose is kept in our tongue, a chilling effect is felt, this is an example for ...................

Acid present in gape is ...............

For human blood the pH range is ................. to ................

Metal + Acid  Salt + ......................