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 General Science Questions

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Q:

What does BOD5 refer to?

A) Biochemical Oxygen Demand in 5 days B) Biochemical Oxygen Demand in 5 hours
C) Biochemical Oxygen Demand in 5 minutes D) Biochemical Oxygen Demand in 5 Months
 
Answer & Explanation Answer: A) Biochemical Oxygen Demand in 5 days

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Q:

___________ is the most ecologically relevant environmental factor.

A) Water B) Temperature
C) Light D) Soil
 
Answer & Explanation Answer: B) Temperature

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Q:

Ultraviolet radiation in the stratosphere is absorbed by

A) SO2 B) Ozone
C) Oxygen D) Argon
 
Answer & Explanation Answer: B) Ozone

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2 1210
Q:

In stems, the protoxylem lies towards the centre and the metaxylem lies towards the periphery of the organ. This type of primary xylem is called _____________.

A) Xylem fibres B) Xylem parenchyma
C) Exarch D) Endarch
 
Answer & Explanation Answer: D) Endarch

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Q:

Limonitic ore is the ore of which metal?

A) Iron B) Aluminium
C) Zinc D) Cobalt
 
Answer & Explanation Answer: A) Iron

Explanation:

Limonite is one of the two principal iron ores, the other being hematite, and has been mined for the production of iron.

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2 1209
Q:

Which of the following causes fly ash?

A) Hydroelectric Power Station B) Coal Combustion Power Plant
C) Nuclear Power Plant D) Tidal Power Plant
 
Answer & Explanation Answer: B) Coal Combustion Power Plant

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3 1206
Q:

Which of the following is the treatment of water pollution?

A) Bag house filter B) Windrow composting
C) Venturi scrubber D) Reverse Osmosis
 
Answer & Explanation Answer: D) Reverse Osmosis

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2 1205
Q:

ISRO built India's first satellite known as _____.

A) Aryabhata B) Bhaskara
C) Rohini D) Insat 1A
 
Answer & Explanation Answer: A) Aryabhata

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