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- 1. Multiple Choice
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
- 2. Multiple Choice
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
- 3. Multiple Choice
Name the acid present in our stomach.
Sulphuric acid
Hydrochloric acid
Nitric acid
Carbonic acid
- 4. Multiple Choice
Name the acid present in sting of an ant.
Phenolphthalein
Citric acid
Hydrochloric acid
Formic acid
- 5. Multiple Choice
Each cell in our body contains an acid, name that acid.
The decarbonicnucleic acid
The deoxyribonucleic acid
The diprotic acid
- 6. Multiple Choice
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
- 7. Multiple Choice
Name the acid that is present in fats in our body.
Formic acid
Fatty acid
Oxalic acid
Methyl orange
- 8. Multiple Choice
Which of the following set of substances contain acids?
Curd, vinegar
Curd, milk of magnesia
Vinegar, soap
Grapes, lime water
- 9. Multiple Choice
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
- 10. Multiple Choice
Which of the following is an acid-base indicator?
Vinegar
Baking soda
Turmeric
Lime water
- 11. Multiple Choice
Methyl orange is an _________
acid
indicator
base
- 12. Multiple Choice
Acetic acid is present in
Lemon
Vinegar
Tomato
Curd
- 13. Multiple Choice
Paheli Is suffering from indigestion due to acidity. In this situation, she is advisable to take:
Curd
Lemon juice
Milk
Milk of magnesia
- 14. Multiple Choice
Lakshmi is writing some statements about bases and indicators. Choose the correct statement and help her.
Tooth decay is caused by the presence of a base.
Indicator is a substance which shows different color in acidic and basic solution.
Sodium Hydroxide turns blue Litmus red.
All the above.
- 15. Multiple Choice
Which of the following statement is or are correct?
Ascorbic acid is present in amla and citrus fruit (lemon and oranges).
Oxalic acid is present in spinach (palak).
Tartaric acid is present in tamarind, unripe grapes and unripe mangoes.
All the above.
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