2
Q:

Which resource is both renewable and inexpensive?

A) Sunlight B) Coal
C) Gold D) Minerals

Answer:   A) Sunlight



Explanation:

A resource is a source or supply from which a benefit is produced. Resources can be broadly classified upon their availability they are renewable and non renewable resources.

 

Renewable Resources :: A resource that can be replenished after use are known as Renewable resources.

Examples :: Sunlight, Water, biomass,...

 

Non renewable Resources :: A resource that, once used, is no longer available are known as Non renewable Resources. 

Example :: Coal, fossil fuels, natural gas,...

 

Sunlight is the both renewable and inexpensive resource from the given options.

Subject: Physics
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Q:

Which instrument records the waves reaching the surface during an earthquake?

 

 

A) Seismograph B) Manometer
C) Barograph D) Chronometer
 
Answer & Explanation Answer: A) Seismograph

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1 587
Q:

Which of the following units is used for the measurement of Luminous Intensity?

 

A) Candela B) Mole
C) Ampere D) Kelvin
 
Answer & Explanation Answer: A) Candela

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Q:

Among various electrical safety devices, one based on the heating effect of electric current is called a:

 

A) Capacitor B) Fuse
C) Protective relay D) Surge protector
 
Answer & Explanation Answer: B) Fuse

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Q:

Among various electrical safety devices, one based on the heating effect of electric current is called a:

 

A) Capacitor B) Fuse
C) Protective relay D) Surge protector
 
Answer & Explanation Answer: B) Fuse

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Q:

In which medium does sound travel faster?

 

A) Gas B) Vacuum
C) Solid D) Liquid
 
Answer & Explanation Answer: C) Solid

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Q:

The ______ is responsible for Earth's magnetic field.

 

A) mantle B) crust
C) inner core D) outer core
 
Answer & Explanation Answer: D) outer core

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Q:

A force due to which moving objects (wind and water current) tend to deflect to the right in Northern hemisphere and left in Southern hemisphere is known as:

 

A) Applied force B) Magnetic force
C) Endogenic force D) Coriolis force
 
Answer & Explanation Answer: D) Coriolis force

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Q:

Electron was discovered in the year 1897 by _______

 

A) T. A. Edison   B) Nicola Tesla  
C) J J Thomson   D) Isaac Newton  
 
Answer & Explanation Answer: C) J J Thomson  

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