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Rachel, an engineering student, was aske...

Rachel, an engineering student, was asked to make a model shaped like a cyclinder. with two cones attached at its two ends by using a thin aluminium sheet. The diameter of the model is 3 cm and its length is 12 cm. If each cone has a height of 2 cm, find the volume of air contained in the model the Rachel made. (Assume the outer and inner dimensions of the model to be nearly the same.)

A

collection of apparatus

B

cleaning of all apparatus

C

making of pH paper wet and then dip it is sample

D

recording observation.

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MODERN PUBLICATION-ACID, BASES AND SALTS-EXERCISE
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  10. Which has higher pH value: 1M NaOH(aq) or 1M HCl(aq)?

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  11. What will be the colour of litmus in a solution of sodium carbonate?

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  12. Which of the two CuSO4 or CH3COONa solutoin has pH>7?

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  15. What will be the colour produced when a drop of methyl orange is adde...

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  16. Which of the two HCl or CH3 COOH is a strong acid?

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  18. Give two examples of strong acids and strong bases.

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  20. The basicity of CH3COOH is 4.

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