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When a solution is added to a cloth stri...

When a solution is added to a cloth strip treated with onion extract, then the smell of onion cannot be detected. State whether the given solution contains an acid or a base.

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LAKHMIR SINGH & MANJIT KAUR-ACID, BASES AND SALTS-Exercise
  1. Name an indicator which is red in acid solution but turns blue in basi...

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  2. Name an indicator which is pink in alkaline solution but turns colourl...

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  3. When a solution is added to a cloth strip treated with onion extract, ...

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  4. When a solution is added to vanilla extract, then the characteristic s...

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  5. Which gas is usually liberated when an acid reacts with a metal? Illus...

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  6. Name the gas evolved when dilute HCl reacts with sodium hydrogencarbon...

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  7. Give the names and formulae of two strong acids and two weak acids.

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  8. Name one natural source of each of the followign acids. (a). Citric ...

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  9. Name one animal and one plant whose stings contain formic acid (or met...

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  10. How is the concentration of hydronium ions (H(3)O^(+)) affected when a...

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  11. Write word equations and balanced equations for the reactions taking p...

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  12. Complete and balance the following chemical equations (a). Zn(s)+HCl...

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  13. Fill in the blanks in the following sentences: (a). Acids have a tas...

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  14. (a). What is an indicator? Name three common indicators. (b). Name t...

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  15. What is an olfactory indicator? Name two olfactory indicators. What is...

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  16. Which gas is usually liberated when an acid reacts with a metal? Illus...

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  17. While diluting an acid, why is it recommended that the acid should be ...

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  18. What happens when an acid reacts with a metal hydrogencarbonate? Write...

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  19. (a). What happens when dilute hydrochloric acid is added to sodium car...

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  20. What happens when an acid reacts with a base? Explain by taking the ex...

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