The percentage of lime in Portland Cement is approximately

40 - 50%

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50 - 60 %

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30 - 40%

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20 - 25%

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Solution

The correct option is B
50 - 60 %

Cement is an important building material. It was first introduced in England in 1824 by Joseph Aspdin. It is also called Portland cement because it resembles with the natural limestone quarried in the Isle of Portland, England.

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Similar questions

Q. The marks obtained by 40 students of a class are given below :

80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80, 90,

50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60

, and

60

Construct a frequency distribution table.

Find the mean of the following frequency distribution using a suitable method:
$\begin{matrix} Class & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 & 60 - 70 Frequency & 25 & 40 & 42 & 33 & 10 \end{matrix}$

Q. Draw a histogram for the following data:

Marks	No. of Students
$10 - 20$	$15$
$20 - 30$	$30$
$30 - 40$	$50$
$40 - 50$	$40$
$50 - 60$	$20$

Q. A major constituent of Portland cement (except lime) is

Q. The marks obtained by 40 students of a class are given below :

80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80,

90, 50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60

, and

60

How many students obtained marks below

40

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The percentage of lime in Portland Cement is approximately

The correct option is B 50 - 60 % Cement is an important building material. It was first introduced in England in 1824 by Joseph Aspdin. It is also called Portland cement because it resembles with the natural limestone quarried in the Isle of Portland, England.

The correct option is B
50 - 60 %

Cement is an important building material. It was first introduced in England in 1824 by Joseph Aspdin. It is also called Portland cement because it resembles with the natural limestone quarried in the Isle of Portland, England.