Railway/SSC JE 2019 History quiz for Phase I and other railways exams 28/02/2019

Railway/SSC JE 2019 History quiz for Phase I

Railway/SSC JE History quiz for  (Phase I), RRB NTPC, SSC various exams and other competitive exams.

Q1. A ball rolling along the ground gradually slows down and finally comes to rest is due to ________.

(a) Friction                                                                          

(b) Magnetic force

(c) Electrostatic force                                                    

(d) Muscular force

Q2. The angle between the __________and the incident ray is called the angle of incidence.

(a) Surface                                                                          

(b) Normal

(c) Tangent                                                                        

(d) Reflected ray

Q3. Who invented the thermos flask?

(a) Ray Tomlinson                                                           

(b) Tim Berners-Lee

(c) William Cullen                                                                            

(d) James Dewar

Q4. Friction is caused by the ______________ on the two surfaces in contact.

(a) Roughness                                  

(b) Smoothness

(c) Densities                                                                      

(d) Gaps

Q5. Sun appears red in colour at sunrise and sunset due to –

(a) The fact that sun emits only red colour at that time

(b) Red light having longer wave length scatters away

(c) That sun comes out of the mountains

(d) That all other colours scatter away except red

Q6. At hill stations, the boiling point of water will be –

(a) Same as at sea level

(b) less than that at sea level

(c) more than that at sea level

(d) Equal to the melting point of ice

Q7. The component used for tuning a radio is basically a variable ___________.

(a) Resistor

(b) Capacitor

(c) Rectifier

(d) Transformer

Q8. 0°K is equivalent to –

(a) 273°C

(b) – 273°C

(c) 0°C

(d) 100°C

Q9. Postage Meter was invented by –

(a) Fyodor Pirotsky                         

(b) Arthur Pitney

(c) Fritz Pfleumer                            

(d) Stephen Perry

Q10. Who invented Helicopter?

(a) Copernicus                  

(b) Sikorsky

(c) Cockrell                                         

(d) Drinker

Solution

Ans.1.(a)

Exp. A ball rolling along the ground gradually slows down and finally comes to rest is due to friction.

Ans.2.(b)

Exp. The angle between the Normal and the incident ray is called the angle of incidence.

Ans.3.(d)

Exp. James Dewar was inventor of the thermos flask.

Ans.4.(a)

Exp. friction was caused due to the roughness of the two surfaces in contact with each other.

Ans.5.(d)

Exp. During sunrise and sunset, the rays have to travel a larger part of the atmosphere because they are very close to the horizon. Therefore, light other than red is mostly scattered away. Most of the red light, which is the least scattered, enters our eyes. Hence, the sun and the sky appear red.

Ans.Exp.Sol. At hill stations, the boiling point of water will be less than that at sea level due to change in atmospheric pressure.

Ans.7.(b)

Exp. The component used for tuning a radio is basically a variable capacitor.

Ans.8.(b)

Exp. 0°K is equivalent to – 273°C.

Ans.9.(b)

Exp. Postage Meter was invented by Arthur Pitney.

Ans.10.(b)

Exp. Igor Sikorsky, a Russian is recognized as father of modern helicopters.

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