Acids, Bases an...

Iron is dropped in very dil. $HN{O}_3$ it gives

Which of the following will turn blue litmus solution red?

Sodium chloride imparts a yellow color to the Bunsen flame. This can be interpreted due to the :

While tasting an orange and a lemon, Raghav found that these fruits are sour in taste and are acidic in nature. Which of the following acids is present in these fruits?

An acid is a substance that produces ............. ions in a water solution

What would be the nature of the solution which has pH value zero?

10 mL of a solution of NaOH is found to be completely neutralised by 8 mL of a given solution of HCl. If we take 20 mL of (the same solution as before) required to neutralise it will be :

When water is added to ammonium hydroxide solution, what would be the effect on the concentrations of hydrogen and hydroxyl ions?

What type of indicator is phenolphthalein?

Ammonia is a colourless gas with a characteristic pungent smell. Which of the following substaances is used to manufacture ammonia?

Which among the following salts is acidic in nature?

Which of the following statements is incorrect about chlor–alkali process?

If a solution turns the colour of the pH paper to bright red, then what could be its possible pH value?

Rishabh has dipped the pH paper in vial containing blood in order to check its pH value. Which of the following colours will be observed in the pH paper?

It is advised to brush your teeth regularly as it prevents tooth decay. What should be the chemical nature of toothpastes so as to prevent the growth of bacteria?

When phenolphthalein is added to NaOH solution, the colour changes to:

In an experiment, a student has added water in anhydrous sodium carbonate. Which of the following substances will be formed?

Which of the following compounds is used to remove the permanent hardness of water?

20 ml of 0.1N NaOH was required to neutralise a solution of a dibasic acid. Weight of the acid present in the solution is :

[Molecular weight of the acid = 126]

Two aqueous solutions are mixed and a precipitate is formed. What type of reaction is it?

Which of the following substances can be used to disinfect drinking water and is also used in chlor-alkali process?

Which of the following acid-base pairs reacts to produce calcium sulphate?

If a solution of dilute hydrochloric acid is added to concentrated hydrochloric acid, then concentration of hydrogen ions will ________ and that of hydroxyl ions will ________.

Parul is suffering from acidity due to poor eating habits. Which of the following substances should be recommended to her?

What would happen if you add phenolphthalein in sodium dioxide solution?

Which of the following plants would you prefer to grow in the area where soil shows a wide range of pH value from 5.3 to 6.0?

Which of the following polyatomic ions splits to give hydrogen ions?

Which of the following substances does not dissociate to give hydrogen ions on dissolving in water?