General Science Questions for Railway 2018:
Dear Students,
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. Curd making is an ancient “Biotechnological” process involving:
दही बनाना एक प्राचीन "बायोटेक्नोलॉजिकल" प्रक्रिया है जिसमें शामिल है
(a) Bacteria / जीवाणु
(b) Virus / वाइरस
(c) Fungus / कवक
(d) Protozoa / प्रोटोजोआ
Q2. Which of the following oil is an extract of clove oil?
निम्न तेलों में से कौन सा लौंग तेल का उद्धरण है?
(a) Metheol / मेथेओल
(b) Eugenol / यूगेनोल
(c) Methenol / मेथनॉल
(d) Benzayldehyde / बेंज़य्लडीहैड
Q3. Organic food is supposed to be better for us because it
कार्बनिक भोजन हमारे लिए बेहतर माना जाता है क्योंकि यह
(a) Relies on chemicals to improve the flavour / स्वाद को सुधारने के लिए रसायनों पर निर्भर है
(b) Is more expensive to buy / खरीदने के लिए और अधिक महंगा है
(c) Is grown in glasshouses keeping it clean of environmental pollutants/ इसे पर्यावरण प्रदूषण से साफ रखने के लिए गिलासहाउस में उगाया जाता है
(d) Is grown without the use of artificial fertilizers and pesticides. / कृत्रिम उर्वरकों और कीटनाशकों के उपयोग के बिना उगाया जाता है
Q4. Balloons are filled with
गुब्बारे से भरे जाते हैं:
(a) Helium/ हीलियम
(b) Argon/ आर्गन
(c) Nitrogen/ नाइट्रोजन
(d) Oxygen/ ऑक्सीजन
Q5. Which of the following is not a chemical fertilizer?
इनमें से कौन सी रासायनिक उर्वरक नहीं है?
(a) Urea / यूरिया
(b) Sodium Sulphate / सोडियम सल्फ़ेट
(c) Super Phosphate / सुपर फॉस्फेट
(d) Potassium Nitrate / पोटेशियम नाइट्रेट
Q6. Chemically ‘Vermillion’ is-
रासायनिक रूप से 'वर्मिलियन' है
(a) Calcium Carbonate / कैल्शियम कार्बोनेट
(b) Potassium Nitrate / पोटेशियम नाइट्रेट
(c) Mercuric Sulphide/ मर्क्यूरिक सल्फाइड
(d) Sodium Chloride / सोडियम क्लोराइड
Q7. Which one of the following is NOT correctly matched?
निम्न में से कौन सा सही से मेल नहीं खाता है?
(a) Magnesium/ मैगनीशियम - Fireworks / पटाखे
(b) Uranium/ यूरेनियम - Atom bomb/ परमाणु बम
(c) Silver/ चांदी - Electric bulb / बिजली के बल्ब
(d) Zinc/जस्ता - Galvanization / गैल्वनीकरण
Q8. Which of the following pairs are not correctly matched-
निम्नलिखित में से कौन सा सुमेलित नहीं है?
(a) Potassium Chlorate/ पोटेशियम क्लोरेट – Matchbox / माचिस
(b) Manganese dioxide/ मैंगनीज डाइऑक्साइड – Dry cell / शुष्क सेल
(c) Hydrochloric acid/ हाइड्रोक्लोरिक एसिड – Accumulator cell / संचयक सेल
(d) Uranium/ यूरेनियम – Atom bomb / परमाणु बम
Q9. Which one of the following is used for manufacturing safety matches?
माचिस के निर्माण के लिए निम्न में से किसका प्रयोग किया जाता है?
(a) Di-phosphorus / डि-फास्फोरस
(b) Black phosphorus / ब्लैक फॉस्फोरस
(c) Red phosphorus / लाल फॉस्फोरस
(d) Scarlet phosphorus / स्कार्लेट फास्फोरस
Q10. Carbon Nanotubes (CNTs) were prepared by-
कार्बन नैनोट्यूब (सीएनटी) किसके द्वारा तैयार किया गया था-
(a) Fuller /फुलर
(b) Iijima / ईजिमा
(c) Faraday / फैराडे
(d) Raman / रमन
Q11. In India, water desalination plant is located in-
भारत में, पानी के अलवणीकरण संयंत्र में स्थित है-
(a) Lakshadweep / लक्षद्वीप
(b) Goa / गोवा
(c) Cuttack / कटक
(d) Chennai / चेन्नई
Q12. Which of the following is not an isotope of hydrogen?
इनमें से कौन सा हाइड्रोजन का आइसोटोप नहीं है?
(a) Tritium/ ट्रिटियम
(b) Yttrium/ अट्रियम
(c) Protium/ प्रोटियम
(d) Deuterium/ ड्यूटेरियम
Q13. Which of the following is the electron configuration of a metallic element?
निम्न में से कौन सा एक धातु तत्व का इलेक्ट्रॉन विन्यास है?
(a) 2, 8
(b) 2, 8, 7
(c) 2, 8, 8
(d) 2, 8, 8, 2
Q14. The main constituents of pearl are-
मोती के मुख्य घटक हैं
(a) Calcium Carbonate and Magnesium Carbonate / कैल्शियम कार्बोनेट और मैग्नीशियम कार्बोनेट
(b) Magnesium oxide and Sodium Chloride/ मैग्नीशियम ऑक्साइड और सोडियम क्लोराइड
(c) Ammonium sulphate and Sodium Carbonate / अमोनियम सल्फेट और सोडियम कार्बोनेट
(d) Calcium oxide and Ammonium Chloride / कैल्शियम ऑक्साइड और अमोनियम क्लोराइड
Q15. There is no reaction when steam passes over-
भाप के _____ के ऊपर से गुजरने पर कोई प्रतिक्रिया नहीं होती है
(a) Aluminium / अल्युमीनियम
(b) Copper / तांबा
(c) Carbon / कार्बन
(d) Iron / लोहा
You may also like to read:
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.
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 90,000 सीटों को वैध उम्मीदवारों द्वारा भरा जाएगा. आपके पास बहुत अच्छा अवसर है और आपको इसे एक बेहतर रणनीति से प्राप्त करना होगा. परीक्षा अप्रैल और मई 2018 के महीने में आयोजित की जायेगी.
Q1. Curd making is an ancient “Biotechnological” process involving:
दही बनाना एक प्राचीन "बायोटेक्नोलॉजिकल" प्रक्रिया है जिसमें शामिल है
(a) Bacteria / जीवाणु
(b) Virus / वाइरस
(c) Fungus / कवक
(d) Protozoa / प्रोटोजोआ
Show Answer
S1. Ans.(a)
Sol. When pasteurized milk is heated to a temperature of 30-40°C or even at room temperature and a small amount of old curd or whey is added to it, the lactobacillus in that curd or whey sample starts to grow. They convert the lactose into lactic acid, which imparts the sour taste to curd.
Sol. When pasteurized milk is heated to a temperature of 30-40°C or even at room temperature and a small amount of old curd or whey is added to it, the lactobacillus in that curd or whey sample starts to grow. They convert the lactose into lactic acid, which imparts the sour taste to curd.
Q2. Which of the following oil is an extract of clove oil?
निम्न तेलों में से कौन सा लौंग तेल का उद्धरण है?
(a) Metheol / मेथेओल
(b) Eugenol / यूगेनोल
(c) Methenol / मेथनॉल
(d) Benzayldehyde / बेंज़य्लडीहैड
Show Answer
S2. Ans.(b)
Sol. Eugenol is a colourless or light yellow oil extract from clove oil having chemical formula C_10 H_12 O_2. It smells like cloves with spicy pungent taste.
Sol. Eugenol is a colourless or light yellow oil extract from clove oil having chemical formula C_10 H_12 O_2. It smells like cloves with spicy pungent taste.
Q3. Organic food is supposed to be better for us because it
कार्बनिक भोजन हमारे लिए बेहतर माना जाता है क्योंकि यह
(a) Relies on chemicals to improve the flavour / स्वाद को सुधारने के लिए रसायनों पर निर्भर है
(b) Is more expensive to buy / खरीदने के लिए और अधिक महंगा है
(c) Is grown in glasshouses keeping it clean of environmental pollutants/ इसे पर्यावरण प्रदूषण से साफ रखने के लिए गिलासहाउस में उगाया जाता है
(d) Is grown without the use of artificial fertilizers and pesticides. / कृत्रिम उर्वरकों और कीटनाशकों के उपयोग के बिना उगाया जाता है
Show Answer
S3. Ans.(d)
Sol. Organic food is produced by farmers who emphasize the use of renewable resources and the conservation of soil and water to enhance environmental quality for future generations. The organic food is produced without using most conventional pesticides; fertilizers made with synthetic ingredients or sewage sludge, bioengineering or ionizing radiation.
Sol. Organic food is produced by farmers who emphasize the use of renewable resources and the conservation of soil and water to enhance environmental quality for future generations. The organic food is produced without using most conventional pesticides; fertilizers made with synthetic ingredients or sewage sludge, bioengineering or ionizing radiation.
Q4. Balloons are filled with
गुब्बारे से भरे जाते हैं:
(a) Helium/ हीलियम
(b) Argon/ आर्गन
(c) Nitrogen/ नाइट्रोजन
(d) Oxygen/ ऑक्सीजन
Show Answer
S4. Ans.(a)
Sol. Balloons are filled with Helium.
Sol. Balloons are filled with Helium.
Q5. Which of the following is not a chemical fertilizer?
इनमें से कौन सी रासायनिक उर्वरक नहीं है?
(a) Urea / यूरिया
(b) Sodium Sulphate / सोडियम सल्फ़ेट
(c) Super Phosphate / सुपर फॉस्फेट
(d) Potassium Nitrate / पोटेशियम नाइट्रेट
Show Answer
S5. Ans.(b)
Sol. Urea super phosphate and Potassium Nitrate are chemical fertilizers. Sodium Sulphate Na_2 SO_4 is the sodium salt of Sulphuric acid. Sodium Sulphate is not used as a chemical fertilizer.
Sol. Urea super phosphate and Potassium Nitrate are chemical fertilizers. Sodium Sulphate Na_2 SO_4 is the sodium salt of Sulphuric acid. Sodium Sulphate is not used as a chemical fertilizer.
Q6. Chemically ‘Vermillion’ is-
रासायनिक रूप से 'वर्मिलियन' है
(a) Calcium Carbonate / कैल्शियम कार्बोनेट
(b) Potassium Nitrate / पोटेशियम नाइट्रेट
(c) Mercuric Sulphide/ मर्क्यूरिक सल्फाइड
(d) Sodium Chloride / सोडियम क्लोराइड
Show Answer
S6. Ans.(c)
Sol. Vermillion is a brilliant red or scarlet pigment originally made from the powdered mineral cinnabar. It is chemically known as mercuric sulphide with chemical formula HgS. It is virtually insoluble in water.
Sol. Vermillion is a brilliant red or scarlet pigment originally made from the powdered mineral cinnabar. It is chemically known as mercuric sulphide with chemical formula HgS. It is virtually insoluble in water.
Q7. Which one of the following is NOT correctly matched?
निम्न में से कौन सा सही से मेल नहीं खाता है?
(a) Magnesium/ मैगनीशियम - Fireworks / पटाखे
(b) Uranium/ यूरेनियम - Atom bomb/ परमाणु बम
(c) Silver/ चांदी - Electric bulb / बिजली के बल्ब
(d) Zinc/जस्ता - Galvanization / गैल्वनीकरण
Show Answer
S7. Ans.(c)
Sol. Silver possesses the highest electrical conductivity, thermal conductivity and reflectivity of any metal.
The correctly matched pairs are as follows:
Magnesium - Fireworks
Uranium - Atom Bomb
Tungsten - Electric bulb
Zinc - Galvanization
Sol. Silver possesses the highest electrical conductivity, thermal conductivity and reflectivity of any metal.
The correctly matched pairs are as follows:
Magnesium - Fireworks
Uranium - Atom Bomb
Tungsten - Electric bulb
Zinc - Galvanization
Q8. Which of the following pairs are not correctly matched-
निम्नलिखित में से कौन सा सुमेलित नहीं है?
(a) Potassium Chlorate/ पोटेशियम क्लोरेट – Matchbox / माचिस
(b) Manganese dioxide/ मैंगनीज डाइऑक्साइड – Dry cell / शुष्क सेल
(c) Hydrochloric acid/ हाइड्रोक्लोरिक एसिड – Accumulator cell / संचयक सेल
(d) Uranium/ यूरेनियम – Atom bomb / परमाणु बम
Show Answer
S8. Ans.(a)
Sol. 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.
Sol. 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.
Q9. Which one of the following is used for manufacturing safety matches?
माचिस के निर्माण के लिए निम्न में से किसका प्रयोग किया जाता है?
(a) Di-phosphorus / डि-फास्फोरस
(b) Black phosphorus / ब्लैक फॉस्फोरस
(c) Red phosphorus / लाल फॉस्फोरस
(d) Scarlet phosphorus / स्कार्लेट फास्फोरस
Show Answer
S9. Ans.(c)
Sol. Red Phosphorus and phosphorus trisulfide is used for manufacturing safety matches. The matchstick’s head is typically composed of the mixture of potassium chlorate, red lead, antimony sulphide and glue. The striking surface of matchboxes is typically composed of red phosphorus, antimony sulphide, powdered glass and glue.
Sol. Red Phosphorus and phosphorus trisulfide is used for manufacturing safety matches. The matchstick’s head is typically composed of the mixture of potassium chlorate, red lead, antimony sulphide and glue. The striking surface of matchboxes is typically composed of red phosphorus, antimony sulphide, powdered glass and glue.
Q10. Carbon Nanotubes (CNTs) were prepared by-
कार्बन नैनोट्यूब (सीएनटी) किसके द्वारा तैयार किया गया था-
(a) Fuller /फुलर
(b) Iijima / ईजिमा
(c) Faraday / फैराडे
(d) Raman / रमन
Show Answer
S10. Ans.(b)
Sol. Sumio Iijima is a Japanse physicist, often cited as the inventor of carbon nanotubes.
Sol. Sumio Iijima is a Japanse physicist, often cited as the inventor of carbon nanotubes.
Q11. In India, water desalination plant is located in-
भारत में, पानी के अलवणीकरण संयंत्र में स्थित है-
(a) Lakshadweep / लक्षद्वीप
(b) Goa / गोवा
(c) Cuttack / कटक
(d) Chennai / चेन्नई
Show Answer
S11. Ans.(a)
Sol. In India, first water desalination plant was opened in 2005 at Kavaratti in the Lakshadweep islands. This LTTD (Low Temperature Thermal Desalination) desalination plant with a capacity of 1 lakh litre per day was developed indigenously by National Institute of Ocean Technology (NIOT).
Sol. In India, first water desalination plant was opened in 2005 at Kavaratti in the Lakshadweep islands. This LTTD (Low Temperature Thermal Desalination) desalination plant with a capacity of 1 lakh litre per day was developed indigenously by National Institute of Ocean Technology (NIOT).
Q12. Which of the following is not an isotope of hydrogen?
इनमें से कौन सा हाइड्रोजन का आइसोटोप नहीं है?
(a) Tritium/ ट्रिटियम
(b) Yttrium/ अट्रियम
(c) Protium/ प्रोटियम
(d) Deuterium/ ड्यूटेरियम
Show Answer
S12. Ans.(b)
Sol. 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 symbols D and T (instead of 2H and 3H) are sometimes used for deuterium and tritium.
Sol. 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 symbols D and T (instead of 2H and 3H) are sometimes used for deuterium and tritium.
Q13. Which of the following is the electron configuration of a metallic element?
निम्न में से कौन सा एक धातु तत्व का इलेक्ट्रॉन विन्यास है?
(a) 2, 8
(b) 2, 8, 7
(c) 2, 8, 8
(d) 2, 8, 8, 2
Show Answer
S13. Ans.(d)
Sol. Calcium is a dull, grey, solid element with a silver appearance which exists in the solid state. It has a high melting point (1115k) and boiling point (1757 K). All these features make it related to the metals. The valence electron configuration of Calcium is 2, 8, 8, 2. Hence, it has a tendency to lose two electrons to get a noble gas configuration. Since it can lose electrons, it can be used in ionic bonding and can form ionic compounds. Like other metals, Calcium also reacts vigorously with dilute acids like hydrochloric acid and produce large amounts of heat, forms Calcium Chloride (CaCl2) and Hydrogen gas. All these properties of Calcium prove that it is a metal.
Sol. Calcium is a dull, grey, solid element with a silver appearance which exists in the solid state. It has a high melting point (1115k) and boiling point (1757 K). All these features make it related to the metals. The valence electron configuration of Calcium is 2, 8, 8, 2. Hence, it has a tendency to lose two electrons to get a noble gas configuration. Since it can lose electrons, it can be used in ionic bonding and can form ionic compounds. Like other metals, Calcium also reacts vigorously with dilute acids like hydrochloric acid and produce large amounts of heat, forms Calcium Chloride (CaCl2) and Hydrogen gas. All these properties of Calcium prove that it is a metal.
Q14. The main constituents of pearl are-
मोती के मुख्य घटक हैं
(a) Calcium Carbonate and Magnesium Carbonate / कैल्शियम कार्बोनेट और मैग्नीशियम कार्बोनेट
(b) Magnesium oxide and Sodium Chloride/ मैग्नीशियम ऑक्साइड और सोडियम क्लोराइड
(c) Ammonium sulphate and Sodium Carbonate / अमोनियम सल्फेट और सोडियम कार्बोनेट
(d) Calcium oxide and Ammonium Chloride / कैल्शियम ऑक्साइड और अमोनियम क्लोराइड
Show Answer
S14. Ans.(a)
Sol. The main constituents of pearl are Calcium Carbonate.
Sol. The main constituents of pearl are Calcium Carbonate.
Q15. There is no reaction when steam passes over-
भाप के _____ के ऊपर से गुजरने पर कोई प्रतिक्रिया नहीं होती है
(a) Aluminium / अल्युमीनियम
(b) Copper / तांबा
(c) Carbon / कार्बन
(d) Iron / लोहा
Show Answer
S15. Ans.(a)
Sol. There is no reaction when steam passes over Aluminium.
Sol. There is no reaction when steam passes over Aluminium.
You may also like to read:
No comments:
Post a Comment