Environmental Engineering Set 1

Decreases ✘ Increases ✘ First decrease, then increase ✘ Remains constant ✔

Number of transfer unit ✘ Neurological turbidity unit ✘ Nephelometric turbidity unit ✘ Network terminal unit ✔

It is an extent to which light is absorbed by particles in the water ✘ It is expressed in ppm ✘ It depends on the fineness of particle present in the water ✘ Turbidity rod is a laboratory method to measure turbidity ✔

No perceptible odour ✘ Very faint odour ✘ Very distinct odour ✘ Extremely strong odour ✔

1mg of fine silica dissolved in 1L of distilled water ✘ 1g of fine silica dissolved in 1L of distilled water ✘ 1g of fine silica dissolved in 1ml of distilled water ✘ 1mg of fine silica dissolved in 1ml of distilled water ✔

1 ✘

0-3

✘

1-5

✘

1-3

✘

0-5

✔

The color produced by 1 g of platinum cobalt ✘ The color produced by 1 mg of platinum cobalt ✘ The color produced by 1 mg of platinum cobalt in 1L of distilled water ✘ The color produced by 1 mg of platinum cobalt in 1mL of distilled water ✔

Gravimetric analysis ✘ Chromatography ✘ Tintometer method ✘ Hydrometer analysis ✔

Dissolved solid = Total solid + Suspended solid

✘

Dissolved solid = Total solid

✘

Total solid = Dissolved solid / Suspended solid

✘

Dissolved solid = Suspended solid

✔