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. ‘Dialysis’ is related to?
‘डायलिसिस’ संबंधित है?
(a) Liver /जिगर
(b) Kidney /गुर्दा
(c) Eyes /आंखें
(d) Brain / मस्तिष्क
Ans.(b)
Sol. Kidneys remove excess organic molecules from the blood. They serve the body as a natural filter of the blood and remove water-soluble wastes, such as urea and ammonium and they are also responsible for the reabsorption of water, glucose and amino acids.
Sol. Kidneys remove excess organic molecules from the blood. They serve the body as a natural filter of the blood and remove water-soluble wastes, such as urea and ammonium and they are also responsible for the reabsorption of water, glucose and amino acids.
Q2. Where is urea separated from the blood?
यूरिया रक्त से कहां अलग होता है?
(a) Intestine /आंत
(b) Stomach /पेट
(c) Spleen /प्लीहा
(d) Kidney /गुर्दा
Show Answer
Ans.(d)
Sol. The process, ultrafiltration occurs at the barrier between the blood and the filtrate in the renal capsule in the kidney. The kidneys remove urea and other toxic wastes from the blood, forming a dilute solution called urine in the process.
Sol. The process, ultrafiltration occurs at the barrier between the blood and the filtrate in the renal capsule in the kidney. The kidneys remove urea and other toxic wastes from the blood, forming a dilute solution called urine in the process.
Q3. The average blood flow through kidneys per minute is
प्रति मिनट गुर्दे के माध्यम से औसत रक्त प्रवाह है:
(a) 1000 cc
(b) 1200 cc
(c) 200 cc
(d) 500 cc
Show Answer
Ans.(b)
Sol. Kidneys are the most important organ in our body. Our kidneys purify around 1500 litre of blood and convert it into approximately 1.5 litre urine per day. 1200 ml of blood flows through both the kidneys per minute and out of it 1 ml of urine is formed per minute.
Sol. Kidneys are the most important organ in our body. Our kidneys purify around 1500 litre of blood and convert it into approximately 1.5 litre urine per day. 1200 ml of blood flows through both the kidneys per minute and out of it 1 ml of urine is formed per minute.
Q4. When kidneys fail to function, there is accumulation of-
जब गुर्दे कार्य करने में विफल हो जाता हैं, तो इसमें किसका संचय होता है-
(a) Fats in the body /शरीर में वसा
(b) Proteins in the body /शरीर में प्रोटीन
(c) Sugar in the blood /रक्त में शुगर
(d) Nitrogenous waste products in the blood /रक्त में नाइट्रोजनयुक्त अपशिष्ट पदार्थ
Show Answer
Ans.(d)
Sol. Metabolism refers to all of the body’s chemical process, the digestion of food and the elimination of waste. The main nitrogenous wastes are urea and uric acid. Urea is formed from gluconeogenesis of amino acids. Urea is one of the primary components of urine.
Sol. Metabolism refers to all of the body’s chemical process, the digestion of food and the elimination of waste. The main nitrogenous wastes are urea and uric acid. Urea is formed from gluconeogenesis of amino acids. Urea is one of the primary components of urine.
Q5. The dialyzer is used for the work of-
डायलिज़र का उपयोग___के कार्य के लिए किया जाता है.
(a) Heart /हृदय
(b) Kidney /गुर्दा
(c) Liver /जिगर
(d) Lungs /फेफड़े
Show Answer
Ans.(b)
Sol. The treatment option for kidney failure; peritoneal dialysis (PD), hemodialysis and kidney transplant. A dialyzer is an artificial kidney designed to provide controllable transfer of solutes and water across a semipermeable membrane separating flowing blood and dialysate streams.
Sol. The treatment option for kidney failure; peritoneal dialysis (PD), hemodialysis and kidney transplant. A dialyzer is an artificial kidney designed to provide controllable transfer of solutes and water across a semipermeable membrane separating flowing blood and dialysate streams.
Q6. The cross-section of a stem of tree has fifty rings, what is the age of the tree?
एक तने के पार अनुभाग में 50 वृत्त है,पेड़ की उम्र क्या है?
(a) 50 months / 50 महीने
(b) 5 years / 5 वर्ष
(c) 25 years / 25 वर्ष
(d) 50 years / 50 वर्ष
Show Answer
Ans.(d)
Sol. Dendrochronolgy or tree-ring dating is the scientific method of dating based on the analysis of patterns of tree rings, also known as growth rings. Visible rings result from the change in growth speed through the seasons of the year, thus one ring usually marks the passage of one year in the life of the tree.
Sol. Dendrochronolgy or tree-ring dating is the scientific method of dating based on the analysis of patterns of tree rings, also known as growth rings. Visible rings result from the change in growth speed through the seasons of the year, thus one ring usually marks the passage of one year in the life of the tree.
Q7. The bones are held together by elastic tissues are called-
लोचदार ऊतक द्वारा हड्डियों को एक साथ रखे जाने को क्या कहते है?
(a) Ligaments / स्नायुबंधन
(b) Fibrous tissues / रेशेदार ऊतक
(c) Fibrin / फाइब्रिन
(d) Muscular tissues / मांसपेशी ऊतक
लोचदार ऊतक द्वारा हड्डियों को एक साथ रखे जाने को क्या कहते है?
(a) Ligaments / स्नायुबंधन
(b) Fibrous tissues / रेशेदार ऊतक
(c) Fibrin / फाइब्रिन
(d) Muscular tissues / मांसपेशी ऊतक
Show Answer
Ans.(a)
Sol. A ligament is a tissue that connects two bones to form a joint. It is tough and fibrous which means that when it is formed, a ligament can take quite a while to heal and might even require surgery.
Sol. A ligament is a tissue that connects two bones to form a joint. It is tough and fibrous which means that when it is formed, a ligament can take quite a while to heal and might even require surgery.
Q8. Plaques formed on teeth are made up of-
दांतों पर निर्मित प्लैक्स किस से बने होते है?
(a) Food particles only / खाद्य कण से
(b) Food particles plus saliva / खाद्य कण और लार
(c) Food particles plus saliva plus mouth acids / खाद्य कण, लार और मुंह एसिड
(d) Food particles plus saliva plus mouth acids plus bacteria / खाद्य कण, लार, मुंह एसिड और बैक्टीरिया
दांतों पर निर्मित प्लैक्स किस से बने होते है?
(a) Food particles only / खाद्य कण से
(b) Food particles plus saliva / खाद्य कण और लार
(c) Food particles plus saliva plus mouth acids / खाद्य कण, लार और मुंह एसिड
(d) Food particles plus saliva plus mouth acids plus bacteria / खाद्य कण, लार, मुंह एसिड और बैक्टीरिया
Show Answer
Ans.(d)
Sol. Dental plaque is a biofilm or mass of bacteria that grows on surface within the mouth. It appears as a white/pale yellow “slime layer” commonly found in between the teeth and along the cervical margins. Plaques formed on teeth are made up of food particles, saliva, mouth acids and bacteria in the oral cavity.
Sol. Dental plaque is a biofilm or mass of bacteria that grows on surface within the mouth. It appears as a white/pale yellow “slime layer” commonly found in between the teeth and along the cervical margins. Plaques formed on teeth are made up of food particles, saliva, mouth acids and bacteria in the oral cavity.
Q9. Which of the following are required for the formation of bones and teeth?
हड्डियों और दांतों के गठन के लिए निम्नलिखित में से क्या आवश्यक है?
(a) Sodium and Potassium / सोडियम और पोटासियम
(b) Iron and Calcium / लोह और कैल्शियम
(c) Sodium and Calcium / सोडियम और कैल्शियम
(d) Calcium and Phosphorus / कैल्शियम और फॉस्फोरस
हड्डियों और दांतों के गठन के लिए निम्नलिखित में से क्या आवश्यक है?
(a) Sodium and Potassium / सोडियम और पोटासियम
(b) Iron and Calcium / लोह और कैल्शियम
(c) Sodium and Calcium / सोडियम और कैल्शियम
(d) Calcium and Phosphorus / कैल्शियम और फॉस्फोरस
Show Answer
Ans.(d)
Sol. Teeth and bones both are hard, white and heavy. Teeth are composed of calcium, phosphorous and other minerals. Bones contain calcium, phosphorus, sodium and other minerals, but mostly consist of the protein collagen.
Sol. Teeth and bones both are hard, white and heavy. Teeth are composed of calcium, phosphorous and other minerals. Bones contain calcium, phosphorus, sodium and other minerals, but mostly consist of the protein collagen.
Q10. In human beings, normally in which one of the following parts, does the sperm fertilize the ovum?
मनुष्यों में, आम तौर पर निम्नलिखित में से किस भाग में, शुक्राणु अंडाकार को निषेचित करता है
(a) Cervix / गर्भाशय ग्रीवा
(b) Fallopian tube / फलोपियन ट्यूब
(c) Lower part of uterus / गर्भाशय का निचला हिस्सा
(d) Upper part of uterus / गर्भाशय का ऊपरी भाग
Show Answer
Ans.(b)
Sol. Fallopian tube, also called oviduct or uterine tube, either of a pair of long narrow ducts located in the human female abdominal cavity that transport the male sperm cells to the egg, provide a suitable environment for fertilization and transport the egg from the ovary, where it is produced.
Sol. Fallopian tube, also called oviduct or uterine tube, either of a pair of long narrow ducts located in the human female abdominal cavity that transport the male sperm cells to the egg, provide a suitable environment for fertilization and transport the egg from the ovary, where it is produced.
Q11. The hormone related to drought tolerance is-
सहिष्णुता की कमी से संबंधित हार्मोन है-
(a) Abscisic acid / अब्स्सिसिक एसिड
(b) Gibberellin / गिब्ब्रेल्लिन
(c) Indole acetic acid / इंडोल एसिटिक एसिड
(d) Cytokinin / साइटोकिनिन
सहिष्णुता की कमी से संबंधित हार्मोन है-
(a) Abscisic acid / अब्स्सिसिक एसिड
(b) Gibberellin / गिब्ब्रेल्लिन
(c) Indole acetic acid / इंडोल एसिटिक एसिड
(d) Cytokinin / साइटोकिनिन
Show Answer
Ans.(a)
Sol. The hormone abscisic acid was discovered in the early 1960s and plant biologists have known for decades that it plays crucial role in keeping plants alive during the drought. Abscisic acid causes the temporary closure of stomata when there is a shortage of water. It is very useful for the plants growing in water deficient soil. It functions as antitranspirant and also known as the stress hormone.
Sol. The hormone abscisic acid was discovered in the early 1960s and plant biologists have known for decades that it plays crucial role in keeping plants alive during the drought. Abscisic acid causes the temporary closure of stomata when there is a shortage of water. It is very useful for the plants growing in water deficient soil. It functions as antitranspirant and also known as the stress hormone.
Q12. Iodine-containing hormone is-
आयोडीन युक्त हार्मोन है
(a) Thyroxine / थाइरॉक्सिन
(b) Insulin/ इंसुलिन
(c) Adrenaline / एड्रेनालाईन
(d) Testrogen /टेस्टोंजेन
आयोडीन युक्त हार्मोन है
(a) Thyroxine / थाइरॉक्सिन
(b) Insulin/ इंसुलिन
(c) Adrenaline / एड्रेनालाईन
(d) Testrogen /टेस्टोंजेन
Show Answer
Ans.(a)
Sol. The thyroid gland is located in the front of the neck attached to the lower part of the voice box (larynx) and to the upper part of the windpipe (trachea). The thyroid gland produces thyroid hormones. These are peptides containing 65% of iodine.
Sol. The thyroid gland is located in the front of the neck attached to the lower part of the voice box (larynx) and to the upper part of the windpipe (trachea). The thyroid gland produces thyroid hormones. These are peptides containing 65% of iodine.
Q13. Animals that are well known to use pheromones are
पशु जो फेरोमोन का उपयोग करने के लिए जाने जाते हैं, वह
(a) Centipedes/ सेंटीपीड
(b) Hydra/हाइड्रा
(c)Pigeons/ कबूतर
(d) Ants / चींटी
Show Answer
Ans.(d)
Sol. Bees, wasps, ants, moths and other insects rely largely upon pheromones as a means of communication.
Sol. Bees, wasps, ants, moths and other insects rely largely upon pheromones as a means of communication.
Q14. By whom estrogen is produced-
एस्ट्रोजन का उत्पादन किसके द्वारा किया जाता है –
(a) Egg(अंडा)
(b) Follicles(फली)
(c) Corpus luteum(पीत-पिण्ड)
(d) Uterus(गर्भाशय)
एस्ट्रोजन का उत्पादन किसके द्वारा किया जाता है –
(a) Egg(अंडा)
(b) Follicles(फली)
(c) Corpus luteum(पीत-पिण्ड)
(d) Uterus(गर्भाशय)
Show Answer
Ans.(b)
Sol. Estrogens hormones are produced primarily by the ovaries. They are released by the follicles on the ovaries and are also secreted by the corpus luteum after the egg has been released from the follicle and from the placenta. The primary function of estrogens is the development of female secondary sexual characteristics. These included breasts, endometrium, regulation of sperm, the menstrual cycle, etc.
Sol. Estrogens hormones are produced primarily by the ovaries. They are released by the follicles on the ovaries and are also secreted by the corpus luteum after the egg has been released from the follicle and from the placenta. The primary function of estrogens is the development of female secondary sexual characteristics. These included breasts, endometrium, regulation of sperm, the menstrual cycle, etc.
Q15. In the human body, which of the following is ductless gland?
मानव शरीर में, निम्नलिखित में से कौन सी एक लचीला ग्रंथि है?
(a) Liver / यकृत
(b) Sweat gland / पसीने की ग्रंथि
(c) Endocrine glands / अंत: स्रावी ग्रंथियां
(d) Kidney / वृक्क
मानव शरीर में, निम्नलिखित में से कौन सी एक लचीला ग्रंथि है?
(a) Liver / यकृत
(b) Sweat gland / पसीने की ग्रंथि
(c) Endocrine glands / अंत: स्रावी ग्रंथियां
(d) Kidney / वृक्क
Show Answer
Ans.(c)
Sol. Endocrine or internally secreting glands are ductless glands since they lack excretory ducts. Endocrine glands secrete their products, hormones, directly into the blood rather than through a duct. The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, thymus, thyroid gland, parathyroid gland and adrenal glands etc.
Sol. Endocrine or internally secreting glands are ductless glands since they lack excretory ducts. Endocrine glands secrete their products, hormones, directly into the blood rather than through a duct. The major glands of the endocrine system include the pineal gland, pituitary gland, pancreas, thymus, thyroid gland, parathyroid gland and adrenal glands etc.
