Question

# About 2 to 5% of gypsum is added to Portland cement. It is just to

- Increase the setting rate of the cement during hydration
- Slow down the setting rate to increase strength
- Both (a) and (b) are correct
- None of the above is correct

## The correct answer is: Slow down the setting rate to increase strength

### Related Questions to study

### If =

### If =

### Osmosis is the phenomenon expressed by :

### Osmosis is the phenomenon expressed by :

### If then the numerical value of is equal to

### If then the numerical value of is equal to

### =

### =

### =

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### In the figure QS and RS are the bisectors of and respectively then

### In the figure QS and RS are the bisectors of and respectively then

### If AB=AC and then

Here we used the concept of linear pair. When two lines cross at one point, a linear pair of angles is created. If the angles follow the intersection of the two lines in a straight line, they are said to be linear. A linear pair's total angles are always equal to 180°. So here the angle A is 50 degree.

### If AB=AC and then

Here we used the concept of linear pair. When two lines cross at one point, a linear pair of angles is created. If the angles follow the intersection of the two lines in a straight line, they are said to be linear. A linear pair's total angles are always equal to 180°. So here the angle A is 50 degree.

### In the figure then ACD=

Here we used the concept of linear pair and exterior angle property. When two lines cross at one point, a linear pair of angles is created. If the angles follow the intersection of the two lines in a straight line, they are said to be linear. A linear pair's total angles are always equal to 180°. So here the angle BCD is 110 degrees.

### In the figure then ACD=

Here we used the concept of linear pair and exterior angle property. When two lines cross at one point, a linear pair of angles is created. If the angles follow the intersection of the two lines in a straight line, they are said to be linear. A linear pair's total angles are always equal to 180°. So here the angle BCD is 110 degrees.

### =

### =

### If and then =

### If and then =

### If then

### If then

### The minimum value is

### The minimum value is

### In the adjoining figure, and then

Here we used the concept of linear pair. When two lines cross at one point, a linear pair of angles is created. If the angles follow the intersection of the two lines in a straight line, they are said to be linear. A linear pair's total angles are always equal to 180°. So here the angle b+c is 90 degrees.

### In the adjoining figure, and then

Here we used the concept of linear pair. When two lines cross at one point, a linear pair of angles is created. If the angles follow the intersection of the two lines in a straight line, they are said to be linear. A linear pair's total angles are always equal to 180°. So here the angle b+c is 90 degrees.

### In the figure, and then the value of x =

Here we used the concept of angles on same side of transversal. When two lines cross at one point, a linear pair of angles is created. If the angles follow the intersection of the two lines in a straight line, they are said to be linear. A linear pair's total angles are always equal to 180°. So here the value of x is 16.

### In the figure, and then the value of x =

Here we used the concept of angles on same side of transversal. When two lines cross at one point, a linear pair of angles is created. If the angles follow the intersection of the two lines in a straight line, they are said to be linear. A linear pair's total angles are always equal to 180°. So here the value of x is 16.

### In the following figure, the value of x =

Here we used the concept of linear pair and exterior angle property. When two lines cross at one point, a linear pair of angles is created. If the angles follow the intersection of the two lines in a straight line, they are said to be linear. A linear pair's total angles are always equal to 180°. So here the angle BCD is 110 degrees.