Science, one of the most innovative fields we all must have adorned with interests. In 7th grade, everyone must have gone through the concepts of acids, bases, and salts in their chapters. The chapters that we must have gone through defines the basic meaning of all these substances and their natures which differentiates them from others. But apart from this, if you really think you are proud to be called a &th grade pass, then you must know all about acids, bases, and salts chapter. For this, you must give it a try at this very interesting quiz and see how well is your knowledge?
1. When an oxide is acidic and is having some pungent odor, what is it called?
A. Sodium Oxide
B. Carbon Dioxide
C. Hydroxide
D. Nitrogen Dioxide
2. Choose the gas used in fire extinguishers?
A. NO2
B. H2O
C. CO2
D. All of the above
3. What is the appropriate way to make a solution of acid in the water?
A. Add water to acid
B. Add acid to water
C. Add acid to kerosene
D. Add water to kerosene and water
4. Describe the nature of products of a neutralization reaction?
A. A salt and water
B. A salt and acid
C. Acid and water
D. Acid and Base
5. What color can you see when you mix acid and base separately with turmeric paste?
A. Red in acid and yellow in base
B. Red in acid and red in base
C. Yellow in acid and yellow in base
D. Yellow in acid and red in base
6. What are the acidic and basic solution colors
A. Pink and colourless
B. Red and pink
C. Colourless and pink
D. Colorless and blue
7. What must be added to the soil so that plants grow well?
A. Quick lime
B. Organic matter
C. Slaked lime
D. All of the above
8. Choose the substance that has acids?
A. Curd, vinegar
B. Curd, vinegar, milk
C. Vinegar, soap
D. All of the above
9. Choose the acid-base indicator?
A. Lime water
B. Vinegar
C. Baking Soda
D. Turmeric
10. What will you get as a result when you add phenolphthalein indicator to a colorless solution?
A. Either basic or neutral
B. Either acidic or basic
C. Either acidic or neutral
D. All of the above
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