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 General Science Questions

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Q:

The transfer of minerals from top soil to subsoil through soil­water is called?

A) Percolation B) Conduction
C) Leaching D) Transpiration
 
Answer & Explanation Answer: C) Leaching

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Q:

Energy travels from Sun to Earth through

A) conduction B) convection
C) radiation D) modulation
 
Answer & Explanation Answer: C) radiation

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Q:

Which of the following represents the most complex trophic level?

A) Community B) Population
C) Ecosystem D) Species
 
Answer & Explanation Answer: C) Ecosystem

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Q:

Why does a black board appears black in colour?

A) It reflects black colour B) It absorbs black colour
C) It reflects all colours D) It absorbs all the colours
 
Answer & Explanation Answer: D) It absorbs all the colours

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Q:

Fruits preserved in cold storage last longer because -

A) exposure to humidity is increased B) more oxygen is available
C) fruits are stored in a dark place D) the rate of respiration of Fruits is decreased
 
Answer & Explanation Answer: D) the rate of respiration of Fruits is decreased

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Q:

In a food chain, what is the difference between primary consumers and secondary consumers?

A) Primary consumers eat plants and other consumers, secondary consumers eat plants and decomposed matter B) Primary consumers eat only plants, secondary consumers eat primary consumers
C) Primary consumers eat plants and decomposed matter, secondary consumers eat plants and other consumers D) Primary consumers eat other consumers, secondary consumers eat only plants
 
Answer & Explanation Answer: B) Primary consumers eat only plants, secondary consumers eat primary consumers

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Q:

Which of the following layers of the atmosphere makes Radio Communication possible?

A) Troposphere B) Thermosphere
C) Ionosphere D) Stratosphere
 
Answer & Explanation Answer: C) Ionosphere

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Q:

In December 2015, NASA's Curiosity Mars rover found the presence of ____, which will help scientists learn about the ancient wet environment.

A) Magnesium B) Cadmium
C) Silica D) Calcium
 
Answer & Explanation Answer: C) Silica

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