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JEE Main 202315 AprilMorning Shift

Exam: JEE Main
Year: 2023
Date: 15 April
Shift: Morning Shift
Subject: Chemistry
Chapter: p Block Elements (Group 13 & 14)

JEE Main 2023 · 15 April · Morning Shift · Chemistry · p Block Elements (Group 13 & 14)

For a good quality cement, the ratio of silica to alumina is found...

For a good quality cement, the ratio of silica to alumina is found to be

Options

A $1 . 5$
B $4 . 5$
C $2$
D $3$

Correct answer

D. $3$

Step-by-step solution

For a good quality cement the ratio of silica (

{SiO}_{2}

) and alumina (

{Al}_{2}{O}_{3}

) should be between

2 . 5to4 . 0

. Similarly, the ratio of lime (

CaO

) to the total oxide mixtures consisting of

{SiO}_{2}, {Al}_{2}{O}_{3}

and

{Fe}_{2}{O}_{3}

should be roughly

2: 1: 1

, If lime is in excess, the cement cracks during setting.

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