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 1,20,000 seats to be filled by the valid candidates. Opportunity is here but you have to welcome it with a provident strategy.
रेलवे बोर्ड अपने उम्मीदवारों के लिए भव्य और प्रतिष्ठित कार्य पदों की पेशकश करता है. और हर साल ऐसा नहीं होता है कि हमें रेलवे की ओर से अधिसूचना मिलती है. लेकिन वर्तमान वर्ष 2018 आपके लिए बहुत सुखद वर्ष है क्योंकि इसमें लगभग 1,20,000 सीटों को वैध उम्मीदवारों द्वारा भरा जाएगा. आपके पास बहुत अच्छा अवसर है और आपको इसे एक बेहतर रणनीति से प्राप्त करना होगा.
Q1. There are rings around which of the following planets? निम्नलिखित में से किस ग्रहों के चारो ओर छल्ले हैं?
Uranus(अरुण ग्रह )
Mars(मंगल ग्रह)
Jupiter(बृहस्पति)
Saturn(शनि ग्रह)
Solution:
Several other planets in our Solar System have rings. It’s just that, unlike Saturn, their systems are less visible.
Q2. D.C. Generator works on the basis of? डीसी जेनरेटर ________ के आधार पर काम करता है?
Faraday’s law of EM induction (फैराडे का विद्युतचुम्बकीय प्रेरण का नियम)
Ohm’s law(ओम का नियम)
Lenz’s law(लेनज़ का नियम)
Newton’s law(न्यूटन का नियम)
Solution:
An AC generator produces alternating power. A DC generator produces direct power. Both of these generators produce electrical power, based on same fundamental principle of Faraday's law of electromagnetic induction.
Q3. Which one of the following noble gas is not found in the atmosphere? निम्नलिखित में से कौन सी नोबल गैस वायुमंडल में नहीं मिलती है?
Radon
Krypton
Argon
Xenon
Solution:
Ans.(a)
Q4. Phenol is used in the preparation of which among the following फेनोल का उपयोग निम्नलिखित में से किस में किया जाता है?
Bakelite(बैकेलाइट)
Polystyrene(पॉलीस्टीरीन )
Nylon(नायलॉन)
P.V.C.
Solution:
Bakelite is based on a chemical combination of phenol and formaldehyde (phenol-formaldehyde resin)
Q5. I.C Chips are usually made of? आईसी चिप्स आमतौर पर किससे बनी होती है?
Lead (लेड)
Chromium(क्रोमियम)
Silicon(सिलिकॉन)
Gold(सोना)
Solution:
An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, normally silicon.
Q6. The function of haemoglobin in body is शरीर में हीमोग्लोबिन का क्या कार्य है-
Transport of Oxygen(ऑक्सीजन का परिवहन)
Destruction of Bacteria(बैक्टीरिया का खंडन)
Prevention of Anaemia(एनीमिया की रोकथाम)
Utilization of Iron(लोहे का उपयोगीकरण)
Solution:
Red blood cells (RBCs) take up oxygen in the lungs or gills and release it into tissues while squeezing through the body’s capillaries. The cytoplasm of erythrocytes is rich in haemoglobin, an iron-containing biomolecule that can bind oxygen and is responsible for the red colour of the cells.
Q7. Milk protein is digested by which of the following enzyme- दूध प्रोटीन निम्न एंजाइम में से किसके द्वारा पचाया जाता है -
Pepsin(पेप्सिन)
Trypsin(ट्रिप्सिन)
Rennin(रेनिन)
Erepsin(एरेप्सिन )
Solution:
Rennin enzymes play an important role in helping young mammals to digest milk. Rennin enzymes are produced by the stomach cell.
Q8. Amino acids are required for the synthesis of: एमिनो एसिड किसके संश्लेषण के लिए आवश्यक है:
Alkaloids/क्षाराभ
Lipids/लिपिड
Proteins/प्रोटीन
Carbohydrates/कार्बोहाइड्रेट
Solution:
Amino acids are required for the synthesis of body protein and other important nitrogen-containing compounds. Amino acids are constituents of protein and act as precursors for many co-enzymes, hormones, nucleic acid, etc.
Q9. The mirror used in motor vehicles to see the rear view is मोटर वाहनों में पीछे का दृश्य के लिए कौन सा दर्पण उपयोग किया जाता है-
Biconcave/द्विअवतली
Convex/उत्तल
Plane/समतल
Concave/अवतल
Solution:
The convex mirror produces an upright image of any object and offers a wide viewing area as compared to the plane mirror. The usage of this type of mirror can be perceived on the car rear-view mirror.
Q10. Ringworm is a disease caused by दाद किसके कारण होने वाली एक बीमारी है?
Fungi/कवक
Bacteria/जीवाणु
Virus/वाइरस
Flies/मक्खियों
Solution:
Ringworm of the skin (tinea corporis) is most commonly caused by the fungus Trichophyton rubrum, which spreads from one person to another.
Q11. The vitamin which is generally excreted by humans in urine is मनुष्यों द्वारा आमतौर पर पेशाब में कौन सा विटामिन उत्सर्जित होता है
Vitamin A
VitaminD
Vitamin C
Vitamin E
Solution:
The vitamin which is generally excreted by humans in urine is Vitamin C.
Q12. The absorption of ink by blotting paper involves काग़ज़ को ब्लोटिंग करके स्याही के अवशोषण में शामिल है-
Viscosity of ink/ स्याही की चिपचिपाहट
Capillary action phenomenon/केशिल क्रिया घटना
Diffusion of ink through the blotting/ब्लोटिंग के माध्यम से स्याही का प्रसार
Siphon action/सिफ़ोन क्रिया
Solution:
Capillary action phenomenon
Q13. RDX was invented by आरडीएक्स का आविष्कार किया था:
Alfred Nobel (अल्फ्रेड नोबेल)
Soddy (सोडी)
Bergillins (बर्गिलिन)
Henning (हेनिंग)
Solution:
RDX is powerful explosive discovered by Georg Friedrich Henning of Germany and patent in 1898 but not used until World War II when most of the warring powers introduced it.
Q14. The red colour of the Sun at sunset and sunrise is due to- सूर्यास्त तथा सूर्योदय के समय सूर्य के लाल रंग होने का कारण है-
Scattering of light (प्रकाश का प्रकीर्णन)
Refraction of light(प्रकाश का अपवर्तन)
Total internal reflection of light(प्रकाश का संपूर्ण आंतरिक परावर्तन)
Dispersion of light(प्रकाश का परिक्षेपण)
Solution:
Red has the maximum wavelength. 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 least scattered enters our eyes. Hence, the sun and the sky appear red.
Q15. The colour of the star is an indication of its: स्टार का रंग किसका एक संकेत है:
Distance from the earth / पृथ्वी से दूरी
Temperature / तापमान
Luminosity / चमक
Distance from the sun / सूर्य से दूरी
Solution:
The colour of the stars reflects the age of stars. Colour is reflected from the temperature is high, then the star is young. The star will be blue during young stage which indicates high temperature. If star is red the temperature is low
Q16. ‘ELISA’ test is employed to diagnose: ‘एलिसा' परीक्षण किसके निदान करने के लिए नियोजित किया जाता है:
Polio virus / पोलियो वायरस
AIDS / एड्स
Tuberculosis bacterium / क्षय रोग जीवाणु
Cancer / कैंसर
Solution:
An enzyme-linked immunosorbent assay, also called ELISA or EIA, is a test that detects and measures antibodies in your blood. ... Antibodies are proteins that your body produces in response to harmful substances called antigens. An ELISA test may be used to diagnose: HIV, which causes AIDS.
Q17. Which of the following pairs are not correctly matched- निम्नलिखित में से कौन सा सुमेलित नहीं है?
Potassium Chlorate/ पोटेशियम क्लोरेट – Matchbox / माचिस
Manganese dioxide/ मैंगनीज डाइऑक्साइड – Dry cell / शुष्क सेल
Hydrochloric acid/ हाइड्रोक्लोरिक एसिड – Accumulator cell / संचयक सेल
Uranium/ यूरेनियम – Atom bomb / परमाणु बम
Solution:
The ignition of a matchbox is due to the phosphorous oxide. The red phosphorous is used in the making matches and fireworks accessories. For making striking surface of matchboxes typically red phosphorus, antimony sulphide, powdered glass and glue are used.
Q18. Which of the following is not an isotope of hydrogen? इनमें से कौन सा हाइड्रोजन का आइसोटोप नहीं है?
Tritium/ ट्रिटियम
Yttrium/ अट्रियम
Protium/ प्रोटियम
Deuterium/ ड्यूटेरियम
Solution:
Hydrogen is the only element whose isotopes have different names that are in common use today. The 2H (or hydrogen-2) isotope is usually called deuterium, while the 3H (or hydrogen-3) isotope is usually called tritium. The ordinary isotope of hydrogen, with no neutrons, is sometimes called "protium".
Q19. Constituents of atomic nucleus are परमाणु नाभिक के घटक क्या हैं -
Electron and proton / इलेक्ट्रॉन और प्रोटॉन
Electron and neutron/ इलेक्ट्रॉन और न्यूट्रॉन
Proton and neutron / प्रोटॉन और न्यूट्रॉन
Proton, neutron and electron / प्रोटॉन, न्यूट्रॉन और इलेक्ट्रॉन
Solution:
The constituents of an atom are protons, neutrons and electrons. The protons and neutrons are found in the nucleus of atoms. The nucleus of an atom is surrounded by electrons.
Q20. Which of the following carries a negative charge? निम्नलिखित म से किसमें ऋणात्मक आवेश है?
X-rays / एक्स-रे
Alpha particles / अल्फा कणों
Beta particles / बीटा कणों
Gamma rays / गामा किरणें
Solution:
Alpha rays or Alpha particles (α) are the positively charged particles. Beta particles (β) are highly energetic electrons which are released from inner part (β) of a nucleus. They are negatively charged (-1) and have a negligible mass. Gamma radiation (γ) consist of photons, which travel at the speed of light like all electromagnetic radiations. A ray has no mass or charge. Gamma radiation can travel much faster (speed of light) in the air than Alpha and Beta.
Q21. In an atom, the order of filling up of the orbitals is governed by- एक परमाणु में, कक्षाओं को भरने के क्रम को किसके द्वारा नियंत्रित किया जाता है
Aufbau’s principle / औफ़बाउ सिद्धांत
Heisenberg’s uncertainty principle / हाइजेनबर्ग की अनिश्चितता सिद्धांत
Hund’s rule / हुंड का नियम
Pauli’s exclusion principle / पॉली एक्सक्लूशन सिद्धांत
Solution:
So The aufbau principle states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. For example, the 1s shell is filled before the 2s subshell is occupied. ... Aufbau is a German noun that means construction or "building-up.
Q22. Isotopes are those atoms of the same element which have- आइसोटोप उन तत्वों के परमाणु वह हैं जिनके-
Atomic mass is same but atomic number is different / परमाणु द्रव्यमान समान है परमाणु संख्या अलग है
Atomic mass is different but atomic number is same / परमाणु द्रव्यमान भिन्न है परमाणु संख्या समान है
Atomic number and atoms mass both are same / परमाणु संख्या और परमाणु द्रव्यमान दोनों समान हैं
None of the above / इनमे से कोई भी नहीं
Solution:
The same atomic number having different atomic mass.
Q23. Rearing silk worms is known is- रेशम के कीड़ों के पालन को क्या कहा जाता है?
Apiculture / मधुमक्खीपालन
Horticulture / बागवानी
Sericulture/ सिल्क कृमि पालन
Floriculture / पुष्पकृषि
Solution:
Apiculture – Rearing bees Horticulture – Study of fruit and flower producing plants Sericulture – Rearing silk worm Floriculture – Study of flowers for decoration work
Q24. Pedology is the science related to the study of: पेडोलॉजी एक विज्ञान है जो___ के अध्ययन से संबंधित है.:
Atmosphere /वायुमंडल
Soil / मिट्टी
Pollutants / प्रदूषक
Seeds /बीज
Solution:
Pedology deals with the study of soil formation, soil morphology, and soil classification.
Q25. Which one of the following hormones stimulates pancreas for the production of digestive juice? निम्न में से कौन सा हार्मोन पाचन रस के उत्पादन के लिए अग्न्याशय को उत्तेजित करता है?
Rennin /रेनिन
Trypsin / ट्रिप्सिन
Secretin /सेक्रेटिन
Pepsin / पेप्सिन
Solution:
Secretin is a hormone that stimulates pancreas for the production of digestive juice. Secretin also helps to regulate the pH of the duodenum by inhibiting the secretion of gastric acid from the parietal cells of the stomach. It also stimulates the contraction of the pancreas.
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