Chemical Environmental Engineering

Which of the following pollutants is absent in the emissions from a fertiliser plant ?

Byadmin March 11, 2019August 29, 2021

Which of the following pollutants is absent in the emissions from a fertiliser plant ?

A. SO2 & SO3
B. NO2
C. NH3
D. CO

Chemical Environmental Engineering

Inhalation of silica dust causes a disease called__________________?

Inhalation of silica dust causes a disease called__________________?

A. Bronchitis
B. Silicosis
C. Pneumoconiosis
D. None of these

Read More Inhalation of silica dust causes a disease called__________________?
Chemical Environmental Engineering

Presence of excess fluorine in water causes__________________?

Presence of excess fluorine in water causes__________________?

A. Dental cavity
B. Tooth decay
C. Fluorosis
D. Respiratory disease

Read More Presence of excess fluorine in water causes__________________?
Chemical Environmental Engineering

Soluble silica present in boiler feed water can be removed by______________________?

Soluble silica present in boiler feed water can be removed by______________________?

A. Coagulation
B. Filtration
C. Anion exchanger
D. Preheating it

Read More Soluble silica present in boiler feed water can be removed by______________________?
Chemical Environmental Engineering

Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called__________________?

Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called__________________?

A. Grit
B. Dust
C. Powder
D. Smoke

Read More Particles having diameter greater than 75 μm (micrometer = 10-6 mm) are called__________________?
Chemical Environmental Engineering

Methyl isocyanate (MIC) gas (TLV

Methyl isocyanate (MIC) gas (TLV <1 ppm), which caused Bhopal gas tragedy in 1984 falls under the category of ______________ toxic gas?

A. Moderately
B. Highly
C. Extremely
D. Very extremely

Read More Methyl isocyanate (MIC) gas (TLV
Chemical Environmental Engineering

Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal ?

Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal ?

A. By chemical coagulation
B. In sedimentation tanks equipped with mechanical scrapper
C. In vacuum filter
D. In clarifiers

Read More Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal ?