Chemical Environmental Engineering

______________ cannot control the noise pollution ?

Byadmin March 11, 2019August 29, 2021

______________ cannot control the noise pollution ?

A. Use of silencers
B. Green house gases
C. Vibration damg
D. Tree plantation

Chemical Environmental Engineering

The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant ?

The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant ?

A. Chlorine
B. Alkalis
C. Benzene hexachloride
D. Alkyl benzene sulphonate (ABS)

Read More The destruction of water-borne pathogens is termed as disinfection of water. Which of the following is a water disinfectant ?
Chemical Environmental Engineering

Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters ?

Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters ?

A. I-131
B. Sr-90
C. Au-198
D. Ra-226

Read More Which of the following radioactive wastes emits all α, β & γ rays and hence is the most hazardous of all radioactive emitters ?
Chemical Environmental Engineering

Foul odour and bad taste of water is removed by treating with__________________?

Foul odour and bad taste of water is removed by treating with__________________?

A. Alum
B. Bleaching powder
C. Activated carbon
D. Copper sulphate

Read More Foul odour and bad taste of water is removed by treating with__________________?
Chemical Environmental Engineering

The average thickness of ozone layer in stratosphere is about _______________ dobson unit (DU)?

The average thickness of ozone layer in stratosphere is about _______________ dobson unit (DU)?

A. 20
B. 230
C. 750
D. 1500

Read More The average thickness of ozone layer in stratosphere is about _______________ dobson unit (DU)?
Chemical Environmental Engineering

Industrial workers working in leather tanning & manufacturing units are prone to suffer from ___________________?

Industrial workers working in leather tanning & manufacturing units are prone to suffer from ___________________?

A. Respiratory ailments (e.g. bronchitis)
B. Skin diseases (e.g. dermatitis)
C. Silicosis
D. Blurred vision

Read More Industrial workers working in leather tanning & manufacturing units are prone to suffer from ___________________?
Chemical Environmental Engineering

Aerosols present in atmospheric air may be__________________?

Aerosols present in atmospheric air may be__________________?

A. Positively charged
B. Negatively charged
C. Neutral
D. Combination of all A., B. & C.

Read More Aerosols present in atmospheric air may be__________________?

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