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. 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
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
Ans.(d)
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.
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
Show Answer
Ans.(a)
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).
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) Dwarf wheat/ बौना गेहूं
(b) Hybrid maize/ हाइब्रिड मक्का
(c) Triticale/ ट्रिटीकेल
(d) Soybean/ सोयाबीन
Show Answer
Ans.(c)
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.
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
Show Answer
Ans.(b)
Sol. Epiphyte organisms usually derive only physical support and not nutrition from their host, though they may sometimes damage the host.
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
Show Answer
Ans.(c)
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.
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. When the left ventricle in the human heart contracts, the blood moves to the?
जब मानव हृदय में बायाँ वेंट्रिकल सिकुड़ता है तो रक्त किस ओर चलता है?
(a) Brain/मस्तिष्क
(b) Pulmonary artery/फेफड़ा-धमनी
(c) Aorta/बड़ी धमनी
(d) Lungs/फेफड़े
Show Answer
Ans.(c)
Sol. When the left ventricle in the human heart contracts, the blood moves to the Arota. Blood leaves the heart through the aortic valve, into the aorta and to the body.
Sol. When the left ventricle in the human heart contracts, the blood moves to the Arota. Blood leaves the heart through the aortic valve, into the aorta and to the body.
Q7. Glaucoma is a disease of the?
ग्लूकोमा ________ कि एक बीमारी है
(a) Skin/त्वचा
(b) Lungs/फेफड़े
(c) Liver/जिगर
(d) Eyes/आंखें
ग्लूकोमा ________ कि एक बीमारी है
(a) Skin/त्वचा
(b) Lungs/फेफड़े
(c) Liver/जिगर
(d) Eyes/आंखें
Show Answer
Ans.(d)
Sol. Glaucoma is a disease that damages your eye’s optic nerve. It usually happens when fluid builds up in the front part of your eye. That extra fluid increases the pressure in your eye, damaging the optic nerve.
Sol. Glaucoma is a disease that damages your eye’s optic nerve. It usually happens when fluid builds up in the front part of your eye. That extra fluid increases the pressure in your eye, damaging the optic nerve.
Q8. Haemoglobin contains the metal?
हैमोग्लोबिन में कौन सी धातु शामिल है:
(a) Copper/कॉपर
(b) Molybdenum/मोलिब्डेनम
(c) Iron/आयरन
(d) Magnesium/मैग्नेशियम
हैमोग्लोबिन में कौन सी धातु शामिल है:
(a) Copper/कॉपर
(b) Molybdenum/मोलिब्डेनम
(c) Iron/आयरन
(d) Magnesium/मैग्नेशियम
Show Answer
Ans.(c)
Sol. Hemoglobin is made up of globin proteins and an iron(metal) rich compound called heme found in RBC involved in transport of oxygen. Each heme group contain iron which is responsible for binding of oxygen.
Sol. Hemoglobin is made up of globin proteins and an iron(metal) rich compound called heme found in RBC involved in transport of oxygen. Each heme group contain iron which is responsible for binding of oxygen.
Q9. The life span of RBC of man is?
मनुष्य के RBC का जीवन काल कितना है –
(a) 120 days/दिन
(b) 150 days/दिन
(c) 180 days/दिन
(d) 190 days/दिन
मनुष्य के RBC का जीवन काल कितना है –
(a) 120 days/दिन
(b) 150 days/दिन
(c) 180 days/दिन
(d) 190 days/दिन
Show Answer
Ans.(a)
Sol. The life span of RBC of man is 120 days.
Sol. The life span of RBC of man is 120 days.
Q10. Cellulose is the chief constituent of?
सेलूलोज़ _______ का मुख्य घटक है:
(a) Cell wall/कोशिका भित्ति
(b) Cell membrane/कोशिका झिल्ली
(c) Secondary wall of xylem/जाइलेम की माध्यमिक भित्ति
(d) Body wall of insects/कीड़ों की अस्थिप्राचीर
सेलूलोज़ _______ का मुख्य घटक है:
(a) Cell wall/कोशिका भित्ति
(b) Cell membrane/कोशिका झिल्ली
(c) Secondary wall of xylem/जाइलेम की माध्यमिक भित्ति
(d) Body wall of insects/कीड़ों की अस्थिप्राचीर
Show Answer
Ans.(a)
Sol. Cellulose is the substance that makes up most of a plant’s cell walls.
Sol. Cellulose is the substance that makes up most of a plant’s cell walls.
Q11. How many pairs of nerves arise from the spinal cord?
रीढ़ की हड्डी से नसों के कितने जोड़े निकलते हैं?
(a) 13
(b) 31
(c) 33
(d) 12
रीढ़ की हड्डी से नसों के कितने जोड़े निकलते हैं?
(a) 13
(b) 31
(c) 33
(d) 12
Show Answer
Ans.(b)
Sol. The spine is a mixed nerve which carries motor, sensory and autonomic signals between the spinal cord and the body. In human there are 31 pairs of spinal nerves, one on each side of the vertebral column.
Sol. The spine is a mixed nerve which carries motor, sensory and autonomic signals between the spinal cord and the body. In human there are 31 pairs of spinal nerves, one on each side of the vertebral column.
Q12. A healthy human being excretes the following litres of urine in 24 hours-
एक स्वस्थ मनुष्य 24 घंटे में कितना लीटर मूत्र उत्सर्जित करता है-
(a) 1.5
(b) 3.0
(c) 6.0
(d) 9.0
एक स्वस्थ मनुष्य 24 घंटे में कितना लीटर मूत्र उत्सर्जित करता है-
(a) 1.5
(b) 3.0
(c) 6.0
(d) 9.0
Show Answer
Ans.(a)
Sol. Excretion of average urine in the adult human body is around 1.5 liters of urine per day. About 91-96% of urine consist of water.
Sol. Excretion of average urine in the adult human body is around 1.5 liters of urine per day. About 91-96% of urine consist of water.
Q13. Which one of the following nutritional elements is not essential for the formation and strengthening of bones and teeth?Which one of the following nutritional elements is not essential for the formation and strengthening of bones and teeth?
हड्डियों और दांतों की रचना और मजबूती के लिए निम्नलिखित पोषक तत्वों में से कौन सा आवश्यक नहीं है
(a) Calcium / कैल्शियम
(b) Phosphorus / फास्फोरस
(c) Fluorine/ फ्लुओरीन
(d) Iodine / आयोडीन
Show Answer
Ans.(d)
Sol. Calcium, Phosphorus, and Fluorine are essential elements for the formation and strengthening of bones and teeth. Deficiency of these nutritional elements may cause teeth and bone diseases, while Iodine is used to control thyroid gland.
Sol. Calcium, Phosphorus, and Fluorine are essential elements for the formation and strengthening of bones and teeth. Deficiency of these nutritional elements may cause teeth and bone diseases, while Iodine is used to control thyroid gland.
Q14. The number of teeth that are developed twice in the lifetime of human being is
मनुष्यों के जीवनकाल में दो बार विकसित दांतों की संख्या कितनी है?
(a) 4
(b) 12
(c) 20
(d) 28
मनुष्यों के जीवनकाल में दो बार विकसित दांतों की संख्या कितनी है?
(a) 4
(b) 12
(c) 20
(d) 28
Show Answer
Ans.(c)
Sol. In human life span, 20 teeth developed twice. Like a human, most of the mammals are diphyodont- It means our 12 permanent molars are monophyodont and others diphyodont. There are four type of teeth-Incisors, canine, premolars and molars.
Sol. In human life span, 20 teeth developed twice. Like a human, most of the mammals are diphyodont- It means our 12 permanent molars are monophyodont and others diphyodont. There are four type of teeth-Incisors, canine, premolars and molars.
Q15. Which of the following is the strongest part of our body?
निम्नलिखित में से कौन सा हिस्सा हमारे शरीर का सबसे मजबूत हिस्सा है?
(a) Bone / हड्डी
(b) Enamel / दंतवल्क
(c) Dentin / दंतधातु
(d) Cementum/ दंतबज्र
निम्नलिखित में से कौन सा हिस्सा हमारे शरीर का सबसे मजबूत हिस्सा है?
(a) Bone / हड्डी
(b) Enamel / दंतवल्क
(c) Dentin / दंतधातु
(d) Cementum/ दंतबज्र
Show Answer
Ans.(b)
Sol. Tooth enamel is the thin outer covering of the tooth and the strongest part of the body. It makes our teeth white and its exists to protect the crowns of healthy teeth. Tooth decay is due to the destruction of tooth enamel. It is made up of hydroxy-apatite crystals, which is calcium phosphate.
Sol. Tooth enamel is the thin outer covering of the tooth and the strongest part of the body. It makes our teeth white and its exists to protect the crowns of healthy teeth. Tooth decay is due to the destruction of tooth enamel. It is made up of hydroxy-apatite crystals, which is calcium phosphate.
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