Which one among the following is the correct order of amount of lime (CaO), silica (Si02), alumina (AI203) and ferric oxide (Fe2O3) in Portland cement?

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Q: 42 (NDA-I/2012)

Which one among the following is the correct order of amount of lime (CaO), silica (Si02), alumina (AI203) and ferric oxide (Fe2O3) in Portland cement?

question_subject: 

Science

question_exam: 

NDA-I

stats: 

0,11,9,11,6,3,0

keywords: 

{'portland cement': [0, 0, 0, 3], 'cao': [0, 0, 0, 3], 'correct order': [0, 0, 2, 0], 'silica': [1, 0, 5, 9], 'lime': [1, 0, 5, 12], 'si02': [0, 0, 1, 1], 'alumina': [0, 0, 1, 2], 'fe203': [0, 0, 1, 2], 'ferric oxide': [0, 0, 2, 1], 'a1203': [0, 0, 0, 1], 'ai203': [0, 0, 0, 1], 'amount': [1, 2, 4, 9]}

The correct order of the amounts of lime (CaO), silica (Si02), alumina (AI203), and ferric oxide (Fe2O3) in Portland cement is option 1: CaO > Si02 > A1203 > Fe203.

To understand why this order is correct, let`s break down each option:

Option 1: CaO > Si02 > A1203 > Fe203

This option states that the amount of lime (CaO) is the highest, followed by silica (Si02), alumina (A1203), and finally ferric oxide (Fe203).

Option 2: Si02 > CaO > Fe203 > A1203

This option is incorrect as it states that the amount of silica (Si02) is the highest, followed by lime (CaO), ferric oxide (Fe203), and finally alumina (A1203).

Option 3: A1203 > Si02 > CaO > Fe203

This option is incorrect as it states that the amount of alumina (A1203) is the highest, followed by silica (Si02), lime (CaO), and finally ferric oxide (Fe203).

Option 4: Fe203 >