Railway Board offers opulent and revered job posts to its aspirants. And it is not every year that we get the notification from Railway offering a good number of vacant seats to the multitude aspirants. But the current year 2018 brought a pleasant surprise with almost 1,27,278 seats to be filled by the valid candidates. Opportunity is here but you have to welcome it with a provident strategy.
Q1. Fathometer is used to measure:
फाथोमीटर का उपयोग __________मापने के लिए किया जाता है
(a) Earthquake / भूकंप
(b) Rain / वृष्टि
(c) Depth of sea / समुद्र की गहराई
(d) Sound intensity / ध्वनि तीव्रता
फाथोमीटर का उपयोग __________मापने के लिए किया जाता है
(a) Earthquake / भूकंप
(b) Rain / वृष्टि
(c) Depth of sea / समुद्र की गहराई
(d) Sound intensity / ध्वनि तीव्रता
Ans.(c)
Sol. Fathometer is an instrument used to determine the depth of water or a submerged object by means of ultrasound waves.
Q2. Which instrument is used to measure sound under water ?Sol. Fathometer is an instrument used to determine the depth of water or a submerged object by means of ultrasound waves.
पानी के नीचे की ध्वनि को मापने के लिए किस उपकरण का उपयोग किया जाता है?
(a) Hygrometer / हाइग्रोमीटर
(b) Hygroscope / हाइग्रोस्कोप
(c) Hypsometer / हाइपोमीटर
(d) Hydrophone/ हाइड्रोफोन
Show Answer
Ans.(d)
Sol. A hydrophone is a microphone designed to be used underwater for recording or listening to underwater sound
Sol. A hydrophone is a microphone designed to be used underwater for recording or listening to underwater sound
Q3. Diffusion of light in the atmosphere takes place due to:
वायुमंडल में प्रकाश का प्रसार_____ के कारण होता है:
(a) Carbon dioxide / कार्बन डाइआक्साइड
(b) Dust particles / धूल कणों
(c) Helium / हीलियम
(d) Water vapours / जल वाष्प
Show Answer
Ans.(b)
Sol. Sunlight is the mixture of different colours. When it passes through the atmosphere it is scattered by the air molecules, particles of dust and other subtle materials which are present in the pathway.
Sol. Sunlight is the mixture of different colours. When it passes through the atmosphere it is scattered by the air molecules, particles of dust and other subtle materials which are present in the pathway.
Q4. The energy of wind is-
हवा की ऊर्जा है-
(a) Only potential / केवल संभावित
(b) Only kinetic केवल गतिशील
(c) Electrical / विद्युतीय
(d) Potential and kinetic both / संभावित और गतिशील दोनों
Show Answer
Ans.(b)
Sol. The kinetic energy in the energy in moving objects or mass. The kinetic energy of the wind (wind energy) can be converted into electrical or mechanical energy.
Sol. The kinetic energy in the energy in moving objects or mass. The kinetic energy of the wind (wind energy) can be converted into electrical or mechanical energy.
Q5. When a mirror is rotated by an angle θ, the reflected ray will rotate by:
जब एक दर्पण को कोण θ द्वारा घुमाया जाता है, तो परिलक्षित किरण____घूमती है:
(a) 0
(b) θ/2
(c) θ
(d) 2θ
Show Answer
Ans.(d)
Sol. If a plane mirror is rotated through a certain angle, then the reflected ray rotates through twice of that angle. So if a mirror is rotated by an angle θ, the reflected ray will rotate by 2θ.
Sol. If a plane mirror is rotated through a certain angle, then the reflected ray rotates through twice of that angle. So if a mirror is rotated by an angle θ, the reflected ray will rotate by 2θ.
Q6. Xeric condition refers to-
जेरिक कंडीशन क्या संदर्भित करता है?
(a) low temperature / निम्न तापमान
(b) low humidity / निम्न आर्द्रता
(c) high evaporation / उच्च वाष्पीकरण
(d) extreme temperature mperature as high as 138 K./ 138 K के समान उच्च तापमान
Show Answer
Ans.(b)
Sol. Xeric condition refers to low humidity. Xeric environment is place where water is meager.
Sol. Xeric condition refers to low humidity. Xeric environment is place where water is meager.
Q7. Wilhelm Roentgen invented-
विल्हेम रोंटजेन ने किसका आविष्कार किया था-
(a) Radio / रेडियो
(b) X-Ray Machine/ एक्स - रे मशीन
(c) Electric Bulb / विद्युत बल्ब
(d) Electric Motor / विद्युत मोटर
विल्हेम रोंटजेन ने किसका आविष्कार किया था-
(a) Radio / रेडियो
(b) X-Ray Machine/ एक्स - रे मशीन
(c) Electric Bulb / विद्युत बल्ब
(d) Electric Motor / विद्युत मोटर
Show Answer
Ans.(b)
Sol. The typewriter was invented by Sholes in 1868. X-ray was invented by Wilhelm Roentgen in 1895, Radio was invented by Guglielmo Marconi in 1901. Safety lamp was invented by Humphry Davy in 1815.
Sol. The typewriter was invented by Sholes in 1868. X-ray was invented by Wilhelm Roentgen in 1895, Radio was invented by Guglielmo Marconi in 1901. Safety lamp was invented by Humphry Davy in 1815.
Q8. Who among the following scientists shared the Nobel Prize in physics with his son?
निम्नलिखित में से किस वैज्ञानिक ने अपने पुत्र के साथ भौतिकी में नोबेल पुरस्कार साझा किया है?
(a) Max Plank / मैक्स प्लैंक
(b) Albert Einstein / अल्बर्ट आइंस्टीन
(c) William Henry Bragg / विलियम हेनरी ब्रैग
(d) Enrico Fermi / एनरिको फर्मि
निम्नलिखित में से किस वैज्ञानिक ने अपने पुत्र के साथ भौतिकी में नोबेल पुरस्कार साझा किया है?
(a) Max Plank / मैक्स प्लैंक
(b) Albert Einstein / अल्बर्ट आइंस्टीन
(c) William Henry Bragg / विलियम हेनरी ब्रैग
(d) Enrico Fermi / एनरिको फर्मि
Show Answer
Ans.(c)
Sol. British physicist and chemist Sir William Henry Bragg shared a noble prize in physics with his son William Lawrence Bragg in 1915. With help of his son, he developed x-ray spectrometer for the analysis of crystal structure by mean of x-rays.
Sol. British physicist and chemist Sir William Henry Bragg shared a noble prize in physics with his son William Lawrence Bragg in 1915. With help of his son, he developed x-ray spectrometer for the analysis of crystal structure by mean of x-rays.
Q9. Who invented the BALLPOINT PEN?
बॉलपोइंट पेन का आविष्कार किसने किया था?
(a) Biro Brothers/ बिरो ब्रदर्स
(b) Waterman Brothers/ वॉटरमैन ब्रदर्स
(c) Bicc Brothers/ बिक्क ब्रदर्स
(d) Write Brothers/ राइट ब्रदर
बॉलपोइंट पेन का आविष्कार किसने किया था?
(a) Biro Brothers/ बिरो ब्रदर्स
(b) Waterman Brothers/ वॉटरमैन ब्रदर्स
(c) Bicc Brothers/ बिक्क ब्रदर्स
(d) Write Brothers/ राइट ब्रदर
Show Answer
Ans.(a)
Sol. The Hungarian brothers, Laszlo and George Biro, made the first ball point pen in 1894. It followed the first workable fountain pen which was invented by L.E. Waterman in 1884.
Sol. The Hungarian brothers, Laszlo and George Biro, made the first ball point pen in 1894. It followed the first workable fountain pen which was invented by L.E. Waterman in 1884.
Q10. Which scientist discovered the radioactive element ?
किस वैज्ञानिक ने रेडियोधर्मी तत्व की खोज की थी?
(a)Isaac Newton/ आइजैक न्यूटन
(b)Albert Einstein/ अल्बर्ट आइंस्टीन
(c)Benjamin Franklin/ बेंजामिन फ्रैंकलिन
(d)Marie Curie / मेरी कुरिए
किस वैज्ञानिक ने रेडियोधर्मी तत्व की खोज की थी?
(a)Isaac Newton/ आइजैक न्यूटन
(b)Albert Einstein/ अल्बर्ट आइंस्टीन
(c)Benjamin Franklin/ बेंजामिन फ्रैंकलिन
(d)Marie Curie / मेरी कुरिए
Show Answer
Ans.(d)
Sol. Marie Skłodowska Curie was a Polish and naturalized-French physicist and chemist who conducted pioneering research on radioactivity.
Sol. Marie Skłodowska Curie was a Polish and naturalized-French physicist and chemist who conducted pioneering research on radioactivity.
Q11. What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes?
कैल्टेक भूकंप विशेषज्ञ का क्या नाम है जिसने भूकंप के परिमाण को मापने के लिए उपयोग किए जाने वाले पैमाने का आविष्कार किया था?
(a)Charles Richter/ चार्ल्स रिक्टर
(b)Hiram Walker/ हिरम वाकर
(c)Giuseppe Mercalli/ जिएसेपे मरकल्ली
(d)Joshua Rumble / यहोशू रंबल
कैल्टेक भूकंप विशेषज्ञ का क्या नाम है जिसने भूकंप के परिमाण को मापने के लिए उपयोग किए जाने वाले पैमाने का आविष्कार किया था?
(a)Charles Richter/ चार्ल्स रिक्टर
(b)Hiram Walker/ हिरम वाकर
(c)Giuseppe Mercalli/ जिएसेपे मरकल्ली
(d)Joshua Rumble / यहोशू रंबल
Show Answer
Ans.(a)
Sol. Charles Richter is most famous as the creator of the Richter magnitude scale.
Sol. Charles Richter is most famous as the creator of the Richter magnitude scale.
Q12. Who discovered electric bulb?
विद्युत बल्ब की खोज किसने की थी?
(a) Thomas Edison / थॉमस एडिसन
(b) Alexander Graham Bell / अलेक्जेंडर ग्राहम बेल
(c) William Cooke / विलियम कुक
(d) Terry Addison / टेरी एडिसन
विद्युत बल्ब की खोज किसने की थी?
(a) Thomas Edison / थॉमस एडिसन
(b) Alexander Graham Bell / अलेक्जेंडर ग्राहम बेल
(c) William Cooke / विलियम कुक
(d) Terry Addison / टेरी एडिसन
Show Answer
Ans.(a)
Sol. American scientist Thomas Alva Edison is the inventor of the electric bulb.
Sol. American scientist Thomas Alva Edison is the inventor of the electric bulb.
Q13. In automobile hydraulic brakes work on-
ऑटोमोबाइल हाइड्रोलिक ब्रेक किस सिद्धांत पर कार्य करते हैं?
(a) Archimedes Principle / आर्किमिडीज सिद्धांत
(b) Newton’s law of motion / न्यूटन के गति नियम
(c) Bernoulli’s Principle / बर्नौली का सिद्धांत
(d) Pascal’s Law / पास्कल का नियम
Show Answer
Ans.(d)
Sol. Hydraulic brake, hydraulic press, hydraulic elevator all works on the principle of Pascal’s law which states that pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid such that the pressure variations remain the same.
Sol. Hydraulic brake, hydraulic press, hydraulic elevator all works on the principle of Pascal’s law which states that pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid such that the pressure variations remain the same.
Q14. A sudden fall in barometer reading indicates that the weather will be:
बैरोमीटर रीडिंग में अचानक गिरावट से पता चलता है कि मौसम _______ होगा:
(a) Stormy weather / तूफानी मौसम
(b) Rainy weather /बरसात का मौसम
(c) Cool dry weather / शीतोष्ण मौसम
(d) Hot and humid weather / गर्म और आर्द्र मौसम
बैरोमीटर रीडिंग में अचानक गिरावट से पता चलता है कि मौसम _______ होगा:
(a) Stormy weather / तूफानी मौसम
(b) Rainy weather /बरसात का मौसम
(c) Cool dry weather / शीतोष्ण मौसम
(d) Hot and humid weather / गर्म और आर्द्र मौसम
Show Answer
Ans.(a)
Sol. A sudden fall in barometer reading indicates that the weather will be stormy.
Sol. A sudden fall in barometer reading indicates that the weather will be stormy.
Q15. Which of the following is the by-product derived from the refining process of petroleum?
पेट्रोलियम की रिफाइनिंग प्रक्रिया से प्राप्त उप-उत्पाद निम्नलिखित में से कौन सा है?
(a) Petrol / पेट्रोल
(b) Charcoal / चारकोल
(c) Coal / कोयला
(d) Asphalt / बालू मिला हुआ मसाला
पेट्रोलियम की रिफाइनिंग प्रक्रिया से प्राप्त उप-उत्पाद निम्नलिखित में से कौन सा है?
(a) Petrol / पेट्रोल
(b) Charcoal / चारकोल
(c) Coal / कोयला
(d) Asphalt / बालू मिला हुआ मसाला
Show Answer
Ans.(d)
Sol. Asphalt is also known as bitumen, is a sticky, black and highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be refined product. The primary use of asphalt is in road construction, where it is used as the glue or binder mixed with aggregate particles to create asphalt concrete. Its other uses are for bituminous waterproofing product, including the production of roofing felt and for sealing flat roofs.
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Sol. Asphalt is also known as bitumen, is a sticky, black and highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be refined product. The primary use of asphalt is in road construction, where it is used as the glue or binder mixed with aggregate particles to create asphalt concrete. Its other uses are for bituminous waterproofing product, including the production of roofing felt and for sealing flat roofs.
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