Engineering :: Public Health Engineering
|
|
|
|
|
|
| 81. |
Low turbidity of water can be determined by |
| A. |
turbidity tube |
B. |
Jacksons turbidimeter |
| C. |
Baylis turbidimeter |
D. |
Hellipe turbidimeter |
Answer: Option C
Explanation:
|
| 82. |
The maximum permissible total solid content in water for domestic purposes should not exceed |
| A. |
300 ppm |
B. |
400 ppm |
| C. |
500 ppm |
D. |
1000 ppm |
Answer: Option C
Explanation:
|
| 83. |
The maximum permissible hardness in water for drinking purposes should not exceed 100 ppm. |
Answer: Option A
Explanation:
|
| 84. |
The maximum permissible chloride content in water for domestic supplies should not exceed |
| A. |
250 ppm |
B. |
350 ppm |
| C. |
450 ppm |
D. |
550 ppm |
Answer: Option A
Explanation:
|
| 85. |
pH value is a symbol for |
| A. |
magnesium |
B. |
hydrogen |
| C. |
calcium |
D. |
sodium |
Answer: Option B
Explanation:
|
| 86. |
Alkalinity is caused by positively charged hydrogen ions. |
Answer: Option B
Explanation:
|
| 87. |
Residual chlorine in water is determined by |
| A. |
versenate |
B. |
starch-iodide |
Answer: Option B
Explanation:
|
| 88. |
Lead should be present in large quantity in water. |
Answer: Option B
Explanation:
|
| 89. |
Calcium sulphate present in water causes corrosion. |
Answer: Option A
Explanation:
|
| 90. |
Which of the following statement is correct? |
| A. |
If the pH value of water is equal to 7, the water is said to be neutral. |
B. |
The pH value determines the strength of the acid or slkali in water. |
| C. |
The pH value of water can be obtained by a potentiometer |
D. |
all of the above |
Answer: Option D
Explanation:
|
Read more:
|
|
