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Q:

According to the distance of planets from the Sun, which of the following order is correct?

A) Mercury, Venus, Earth, Mars B) Mercury, Earth, Mars, Venus
C) Mercury, Mars, Earth, Venus D) Mercury, Mars, Venus, Earth
 
Answer & Explanation Answer: A) Mercury, Venus, Earth, Mars

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Q:

Who is the CEO of Cognizant Technology Solutions as of February 2018?

A) Francisco D'Souza B) Azim Premji
C) Nandan Nilekani D) Vishal Sikka
 
Answer & Explanation Answer: A) Francisco D'Souza

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Q:

Who among the following dedicated the Chennai - Nashri Tunnel - the longest road tunnel in India - to the nation in April 2017?

A) Chandrababu Naidu B) Pranab Mukherjee
C) Narendra Modi D) Omar Abdullah
 
Answer & Explanation Answer: C) Narendra Modi

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Q:

Sunspots appear dark because they are

A) hotter than the rest of the Sun's surface. B) more magnetic than the rest of the Sun's surface. 
C) cooler than the rest of the Sun's surface. D) None of the above
 
Answer & Explanation Answer: C) cooler than the rest of the Sun's surface.

Explanation:

Sunspots are a magnetic phenomenon on the Sun.

The reason a sunspot appears dark is that they are cooler than the rest of the Sun's surface and also the gas inside the spot where the magnetic field is strongest is only emitting about 1/4 as much light as from the rest of the solar surface. 

 

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Q:

Name the type of mirror used in the headlight of vehicles

A) Plano-convex mirror B) Convex mirror
C) Plane mirror D) Concave mirror
 
Answer & Explanation Answer: D) Concave mirror

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Q:

Which of the following devices converts Chemical energy into Electrical energy?

A) Electric heater B) Electric fan
C) Hair dryer D) Electric cell
 
Answer & Explanation Answer: D) Electric cell

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Q:

Find the potential energy gained by a body of mass 25 kg, if it is raised by 5 m. (use g = 10 m/s2)

A) 1250 B) 50
C) 625 D) 25
 
Answer & Explanation Answer: A) 1250

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Q:

What is the approximate circumference of earth?

A) 40,000 Km B) 60,000 Km
C) 80,000 Km D) 1,00,000 Km
 
Answer & Explanation Answer: A) 40,000 Km

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