Questions

Q:

An alloy is an example of

A) Colloidal solution B) Emulsion
C) Solid solution D) Heterogenous mixture
 
Answer & Explanation Answer: C) Solid solution

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Q:

Which of the following is a nitrogen-fixing bacteria?

A) Salmonella B) Rhizobium
C) E.coli D) Pseudomonas
 
Answer & Explanation Answer: B) Rhizobium

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Q:

Find the potential energy gained by a body of mass 50 kg, if it is raised by 10m. (use g = 10 m/s2)

A) 50 B) 5000
C) 2500 D) 25
 
Answer & Explanation Answer: B) 5000

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Q:

Echocardiogram is more closely related to

A) Doppler effect B) Zeeman effect
C) Photoelectric effect D) Magnetic effect
 
Answer & Explanation Answer: A) Doppler effect

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Q:

The oldest form of cultivation in Sri Lanka is known as

A) Ladang B) Chena
C) Jhumming D) Tamarai
 
Answer & Explanation Answer: B) Chena

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Q:

In October 2017, the biggest ever highway project was launched in India. It aims to develop approximately how many kilometers of roads by year 2022?

 

A) 65000 B) 83000
C) 1,00,000 D) 50000
 
Answer & Explanation Answer: B) 83000

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Q:

The energy which we get from food is measured in

A) Calories B) Kelvin
C) Fat D) Amperes
 
Answer & Explanation Answer: A) Calories

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Q:

Exobiology refers to

A) Life in Outer space B) Life of animals
C) Life of plants D) Life of human beings on earth
 
Answer & Explanation Answer: A) Life in Outer space

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