Acids, bases and salts

Products of a neutralization reaction are always:

• an acid and a base

• an acid and a salt

• a salt and water

• a salt and a base

Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed.

• Yellow in both acid and base

• Yellow in acid and red in base

• Pink in acid and yellow in base

• Red in acid and blue in base

Tags

NGSS.MS-PS1-2

Name the acid present in our stomach.

• Sulphuric acid

• Hydrochloric acid

• Nitric acid

• Carbonic acid

Name the acid present in sting of an ant.

• Phenolphthalein

• Citric acid

• Hydrochloric acid

• Formic acid

Each cell in our body contains an acid, name that acid.

• The decarbonicnucleic acid

• The deoxyribonucleic acid

• The diprotic acid

Phenolphthalein is a synthetic indicator and its colours in acidic and basic solutions, respectively are:

• pink and colourless

• blue and red

• red and blue

• colourless and pink

Tags

NGSS.MS-PS1-2

Name the acid that is present in fats in our body.

• Formic acid

• Fatty acid

• Oxalic acid

• Methyl orange

Which of the following set of substances contain acids?

• Curd, vinegar

• Curd, milk of magnesia

• Vinegar, soap

• Grapes, lime water

When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?

• Slaked lime

• Quick lime

• Calamine solution

• Organic matter

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

Which of the following is an acid-base indicator?

• Vinegar

• Baking soda

• Turmeric

• Lime water