General Science Questions for Railway 2018:
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 90,000 seats to be filled by the valid candidates. Opportunity is here but you have to welcome it with a provident strategy. The exam will be conducted in the months of April and May 2018.
Q1. Which one of the following fibre is not a product of plant stem /निम्नलिखित में से कौन सा फाइबर पौंधे के तने का एक उत्पाद नहीं है:
(a) Flax /फ्लेक्स
(b) Hemp /हेम्प
(c) Jute /जूट
(d) Cotton /कपास
Sol. The fibre from the flax, hemp, and jute is obtained from stems, while cotton is obtained from the fruit of the cotton plant, called cotton balls. Cotton fibres are classified into two types namely lint and fuzz respectively. Lint fibre is more important for the commercial purpose then fuzz fibre.
Q2. The energy released during cellular respiration is stored in _______.
कोशिकीय श्वसन के दौरान जारी ऊर्जा को _______ में संग्रहीत किया जाता है.
(a) ATP /एटीपी
(b) glucose /ग्लूकोज़
(c) lungs /फेफड़ों
(d) ileum /लघ्वान्त्र
Sol. During cellular respiration, glucose is broken down in the presence of oxygen to produce carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).
Q3. Which one of the following is a man-made cereal, not found in nature?
निम्नलिखित में से कौन सा अनाज मानव निर्मित है, प्रकृति में नहीं पाया जाता?
(a) बौना गेहूं/ Dwarf wheat
(b) हाइब्रिड मक्का / Hybrid maize
(c) ट्रिटीकेल / Triticale
(d) सोयाबीन/ Soybean
Sol. Triticale is man-made cereal which is not found in nature. In fact, it is a hybrid small grain produced by crossing wheat and rye.
Q4. Epiphytes are plants which depend on other plants for :
इपीफाईट्स वह पौधे हैं जो अन्य पौधों पर ____ के लिए निर्भर करते हैं:
(a) Food / भोजन
(b) physical support / भौतिक समर्थन
(c) Shade / छाया
(d) Water / पानी
Sol. Epiphyte organisms usually derive only physical support and not nutrition from their host, though they may sometimes damage the host.
Q5. Flowers emit fragrance to:
फूल, खुशबू का उत्सर्जन किस लिए करता है
(a) Purify air / हवा को शुद्ध करने के लिए
(b) Drive away files / मक्खियों को दूर करने के लिए
(c) Attract insects / कीड़ों को आकर्षित करने के लिए
(d) Perform all the above/ उपरोक्त सभी
Sol. Flowers emit fragrance to attract pollinators which are mainly insects. The fragrance plays a prominent role in the localization and selection of flowers by insects, especially moth-pollinated flowers, which are detected and visited at night.
Q6. The radiant energy absorbed by the plants result in-
पौधों द्वारा अवशोषित दीप्तिमान ऊर्जा का क्या परिणाम है-
(a) Photolysis of water / पानी का फोटोोलिसिस
(b) Oxidation of chlorophyll / क्लोरोफिल का ऑक्सीकरण
(c) Reduction of oxygen / ऑक्सीजन की कमी
(d) Oxidation of carbon dioxide / कार्बन डाइऑक्साइड का ऑक्सीकरण
Sol. Photolysis of water is the outcome of radiant energy taken by plants in which hydrogen ions and oxygen gas are made by the breaking of H_2 O molecules.
Q7. Plants receive their nutrients mainly from ?
पौधों को मुख्य रूप से अपने पोषक तत्व प्राप्त किससे प्राप्त होते हैं?
(a) atmosphere/ वायुमंडल
(b) chlorophyll/ क्लोरोफिल
(c) light/ प्रकाश
(d) soil / मिट्टी
Sol. Plants receive their nutrients mainly from soil because it is soil which contains humus, water and minerals for proper growth of the plant.
Q8. Most highly intelligent mammals are :
सबसे उच्च बुद्धिमान स्तनधारी कौन हैं:
(a)Elephants/ हाथी
(b)Whales/ व्हेल
(c)Dolphins/ डाल्फिन
(d)Kangaroos / कंगारू
Sol. Most highly intelligent mammals are dolphins.
Q9. What is a mushroom?
एक मशरूम क्या है?
(a) Fungi / कवक
(b) Plant / पौधा
(c) Animal / जीव
(d) Bacteria / जीवाणु
Sol. Mushroom is a fungus which is used as a vegetable for food.
Q10. Noscapine is obtained from-
नोस्कापाइन किससे प्राप्त किया जाता है
(a) Poppy / खसखस
(b) Basii / बेसी
(c) Eucalyptus / युकलिप्टुस
(d) Ephedra / ईफेड्रा
Sol. Noscapine is obtained from poppy.
Q11. Heroin is obtained from
हेरोइन किससे प्राप्त होता है?
(a) Indian hemp / भारतीय भांग
(b) Opium poppy/ अफीम पोस्ता
(c) Tobacco / तंबाकू
(d) Areca nut / सुपारी
Sol. Heroin is obtained from the Opium poppy plant. Opium poppy is the dried latex obtained from the opium poppy. Opium latex contains approximately 12% of the analgesic alkaloid morphine, which is processed chemically to produce heroin and other synthetic opioids for medicinal use and for the illegal drug trade.
Q12. Bamboo is classified as
बांस किसके रूप में वर्गीकृत है
(a)Bush/ झाड़ी
(b)Tree/ पेड़
(c)Grass/ घास
(d)Weed/ टंबाकू
Sol. Bamboo belongs to a group of woody perennial grasses in the true grass family.
Q13. Hereditary symptoms are moved in the descendant of creatures by-
वंशानुगत लक्षण किसके द्वारा प्राणियों के वंशज में स्थानांतरित होते हैं-
(a) Ribosome / राइबोसोम
(b) Chromosome / क्रोमोसाम
(c) Plasma / प्लाज्मा
(d) Lysosome / लाइसोसोम
Sol. In the descendant of creatures, the hereditary symptoms are moved by chromosomes. These are made from nucleoproteins. The term was coined by Von Waldeyer-Hastz. The small pieces of chromatin during the partition of cells are known as chromosome, on which genes are found.
Q14. Which of these is not correctly matched-
निम्नलिखित में से क्या सही मिलान नहीं है
(a) Blue-green algae/ नीले हरे शैवाल – Bio-fertilizer / जैव उर्वरक
(b) Chrysopa/क्रायसोपा – Maho-control / माहो नियंत्रण
(c) Bio 902/ बायो 902 – Variety of mustard / सरसों के विभिन्न प्रकार
(d) Azotobacter / एजोटोबैक्टर – Bioinsecticide / जैव कीटनाशक
Sol. Azotobacter is a bacteria. Azotobacter naturally fixes atmospheric nitrogen in the rhizosphere (the zone surrounding the root of plants). So option (d) is not correctly matched. Other three options are correctly matched.
Q15. Carotene in Indian cow’s milk causes ?
भारतीय गाय के दूध में कैरोटीन किसका कारण है?
(a) Deep yellow colour/ गाड़ा पीला रंग
(b) Creamish white colour/ क्रीमी सफेद रंग
(c) white colour/ सफेद रंग
(d) yellow colour/ पीला रंग
Sol. Cow milk contains beta-carotene pigment which imprats yellow colour to milk.
You may also like to read:
