Power Plant Engineering Mcqs

Q:

Which of the following are negative effects on the soil and water due to conventional, mechanized farming practices?

A) soil compaction B) reduction in soil organic matter
C) soil erosion D) all of the mentioned
 
Answer & Explanation Answer: D) all of the mentioned

Explanation: All the mentioned impacts are the negative effects on the soil & water due to conventional, mechanized farming practices.

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16
Q:

The three primary soil macronutrients are _________

A) carbon, oxygen and water B) copper, cadmium and carbon
C) potassium, phosphorus and nitrogen D) boron, zinc and manganese
 
Answer & Explanation Answer: C) potassium, phosphorus and nitrogen

Explanation: Potassium, phosphorus, and nitrogen are the three primary soil macronutrients.

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17
Q:

Which of the following is not an important characteristic of the Green Revolution?

A) mechanized agriculture B) hybrid seeds
C) slash and burn D) monoculture
 
Answer & Explanation Answer: C) slash and burn

Explanation: Slash & Burn isn’t an important characteristic of the Green Revolution.

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18
Q:

Groundwater mining in coastal areas can result into _________

A) increase in the salinity of groundwater B) decrease in the toxicity of groundwater
C) decrease in the salinity of groundwater D) increase in the water table
 
Answer & Explanation Answer: A) increase in the salinity of groundwater

Explanation: Groundwater mining in coastal areas can result into an increase in the salinity of groundwater.

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16
Q:

The stage in which the biological processes are used to purify water in a wastewater treatment plants is called?

A) secondary sewage treatment B) primary sewage treatment
C) wastewater reduction D) biochemical reduction
 
Answer & Explanation Answer: A) secondary sewage treatment

Explanation: The stage in which the biological processes are used to purify water in a wastewater treatment plants is called Secondary Sewage Treatment.

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16
Q:

Which of the following is considered as part of water use planning?

A) waste water treatment B) water diversion projects
C) storm sewer drainage D) all of the mentioned
 
Answer & Explanation Answer: D) all of the mentioned

Explanation: All the mentioned issues come under water use planning.

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21
Q:

Which of the following is a major source of groundwater contamination?

A) agricultural products B) landfills
C) septic tanks D) all of the mentioned
 
Answer & Explanation Answer: D) all of the mentioned

Explanation: All of the mentioned options are major sources of groundwater contamination.

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21
Q:

How the biological oxygen demand gets affected with the increased presence of organic matter in water?

A) the oxygen demand increases B) the oxygen demand decreases
C) the oxygen demand remains unchanged D) none of the mentioned
 
Answer & Explanation Answer: A) the oxygen demand increases

Explanation: With the increased presence of organic matter in water, the oxygen demand increases.

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