100 Science Questions and Answers for RRB NTPC
What is the kilowatt hour unit?
(A) charge power
(B) Energy
(C) Potential power
(D) power
Correct Answer : B
What is the unit of magnetic field?
(A) Newton
(B) Tesla
(C) Ampere
(D) meter
Correct Answer : B
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
What type of current is obtained from dynamo?
(A) Direct Section
(B) alternating current
(C) both streams
(D) None of these
Correct Answer : A
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
What type of magnet is used in commercial motors?
(A) Permanent magnet
(B) umbilical magnet
(C) electromagnet
(D) Common rod magnet
Correct Answer : C
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
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.
Who discovered electromagnetic induction?
(A) Maxwell
(B) Fleming
(C) Faraday
(D) Ampere
Correct Answer : C
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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