100 Science Questions and Answers for RRB NTPC

Vikram Singh3 years ago 21.5K Views Join Examsbookapp store google play
100 Science Questions and Answers for RRB NTPC
Q :  

What is the kilowatt hour unit?

(A) charge power

(B) Energy

(C) Potential power

(D) power


Correct Answer : B

Q :  

What is the unit of magnetic field?

(A) Newton

(B) Tesla

(C) Ampere

(D) meter


Correct Answer : B

Q :  

What is the color that is used in danger signals?

(A) Yellow color

(B) Purple color

(C) Blue color

(D) Red color


Correct Answer : D

Q :  

What type of current is obtained from dynamo?

(A) Direct Section

(B) alternating current

(C) both streams

(D) None of these


Correct Answer : A

Q :  

What type of reflection is made on the cinema screen?

(A) virtual image

(B) real reflection

(C) both

(D) All the statements are true


Correct Answer : B

Q :  

What type of magnet is used in commercial motors?

(A) Permanent magnet

(B) umbilical magnet

(C) electromagnet

(D) Common rod magnet


Correct Answer : C

Q :  

What is the farthest point of the normal human eye?

(A) is at 25 cm

(B) is at infinity

(C) is at 25 mm

(D) is at 25 m


Correct Answer : B

Q :  

Which are the two important parts of human beings in which magnetic field must be generated?

(A) arms and legs

(B) muscles and heart

(C) Heart and brain

(D) Eye and visual nerve


Correct Answer : C
Explanation :

Two main organs in the human body where the magnetic field produced is significant, are the heart and the brain. The magnetic field inside the body forms the basis of obtaining the images of different body parts.


Q :  

Who discovered electromagnetic induction?

(A) Maxwell

(B) Fleming

(C) Faraday

(D) Ampere


Correct Answer : C

Q :  

Which material rod is often used to make electromagnets?

(A) Steel

(B) malleable iron

(C) Brass

(D) None of these


Correct Answer : B

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    Vikram Singh

    Providing knowledgable questions of Reasoning and Aptitude for the competitive exams.

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