General Science Questions And Answers Book PDF
General Science Questions And Answers Book PDF
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General Science Book prepared by “Science GK” has been brought through PDF. As all of you competitive students would know that often in all competitive exams a lot of questions are asked from Physics, Chemistry and Biology. And let us tell all of you that students like to read a lot of books made by “Drishti Publication”. Because very good information has been told in this book. Top 50 General Science GK Questions is very good for preparing for your upcoming upcoming exam. That’s why all of you students should download General Science Questions (MCQs) soon, and get involved in your preparation well.
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Science Quiz Questions and Answers
Que.-1. In 1729 AD, Pieter Van Musschenbroek used the term ‘PHYSICS’ for the first time. What was the subject called so far?
Ans. Natural philosophy.
Que.-2. What is known as ‘Suicidal bags of cell’?
Ans. Chloroplast
Que.-3. What is systolic and diastolic pressure in a healthy man?
Ans. 120mm & 80mm
Que.-4. What is the maximum capacity of d-orbital?
Ans. 10 electrons.
Que.-5. Which form of science dealing with the study of structural and cultural traits of human beings?
Ans. Anthropology.
Que.-6. What are Bryophytes ?
Ans. Amphibious Plants
Que.-7. Which component of the Cell is called it’s ‘Kitchen’?
Ans. Chloroplast
Que.-8. Which Greek philosopher suggested that the material world was composed of four basic elements – air, water, fire and earth?
Ans. Empedocles.
Que.-9. What is the shape of s-orbital?
Ans. Spherical.
Que.-10. What are the two functional groups in an ecosystem?
Ans. Autotrophs and heterotrophs.
Que.-11. Who in 1231 was the first to describe the science of optics?
Ans. Robert Grosseteste.
Que.-12. What do you mean by Zeeman Effect?
Ans. Splitting of spectral lines by magnetic field.
Que.-13. Where does the primary photo chemical reaction occur in chloroplast?
Ans. Quantasome.
Que.-14. Who was burnt to death for suggesting that the sun might be an ordinary star?
Ans. Giordano Bruno.
Que.-15. Which series of hydrogen atomic spectrum lies in the visible region?
Ans. Balmer series.
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General Science Questions
1. Which metal can be easily cut with a knife-
(A)Sodium
(B) Mercury
(C)Copper
(D)Iron
Answer- (A)
2. The best conductor of electricity is-
(A)Silver
(B) Lead
(C)Copper
(D) aluminum
Answer- (A)
3. When lemon juice is added to soda water, bubbles start coming out because it contains-
(A) alkali
(B) Acid
(C) indifferent
(D. ALL OF THE ABOVE
Answer- (A)
4. The color of a cut apple turns brown after some time because it reacts with air to form-
(A)Iron Oxide
(B) Potassium oxide
(C) aluminum oxide
(D) sodium oxide
Answer- (A)
5.Which gas is released when water is mixed with lime?
(A) Oxygen
(B) Carbon dioxide
(C) Hydrogen
(D) Helium
Answer- (B)
6. Which of the following substances is found in green henna, due to which it turns red?
(A) Lasson
(B) Potassium
(C)Carbon
(D)Iron
Answer- (A)
7. What happens in the oxidation reaction-
(A) Addition of oxygen
(B) Addition of hydrogen
(C) separation of oxygen
(D) receiving electrons
Answer- (A)
8. What color does blue litmus paper turn into-
(A) White
(B) Red
(C) Black
(D) Violet
Answer- (B)
9. Alkali turns red litmus into-
(A) Black
(B) White
(C) Blue
(D) Violet
Answer- (C)
10. The reason for the browning of the cut apple is that present in the apple-
(A)Calcium
(B) Zinc
(C)Iron
(D) Iodine
Answer- (D)
11.Which of the following is an extinct animal species-
(A) Dodo bird
(B) crow
(C) Elephant
(D) Tiger
Answer- (A)
12. Somatic reproduction is found in-
(A) Potato
(B) Wheat
(C) Neem
(D) in peas
Answer- (A)
13. The combination of male and female gametes is called-
(A)pollinating particle
(B) Fertilization
(C) Mukulan
(D) Spore
Answer- (B)
14. A unisexual flower is-
(A) Mecca
(B)mustard
(C) Rose
(D)Pitunia
Answer- (A)
15.Which of the following is a bisexual flower-
(A) Papaya
(B) Mecca
(C)Cucumber
(D)mustard
Answer- (D)
16. The approximate amount of water in the blood plaza is-
(A)70%
(B)90%
(C) 10%
(D)45%
Answer- (B)
17.How many times the heart of an adult person beats in 1 minute-
(A)50 times
(B)72 times
(C)100 times
(D)120 times
Answer- (C)
18. Red blood cells are known by which of the following names-
(A) platelets
(B)Pulse
(C)RBC
(D)WBC
Answer- (C)
19. What is lacking in the body due to anemia disease-
(A) hemoglobin in the blood
(B) Vitamin K
(C) of water
(D) Mineral salts
Answer- (A)
20. When the female Anopheles mosquito bites, which disease is caused by it-
(A)AIDS
(B) Cancer
(C) Malaria
(D) Dengue
Answer- (C)
21. The radioisotope used in the treatment of skin diseases is?
[A] radio lead
[B] Radio Cobalt
[C] Radio Phosphorous
[D] Radio Iodine
Answer: C
22. Red blood cells of man at very high altitude?
[A] increases in size
[B] increases the number of
[C] becomes smaller in size
[D] the number of decreases
Answer: B
23. Which heavy metal is found in modern tanning industries, which is toxic?
[A] Nickel
[B] zinc
[C] Chromium
[D] lead
Answer: C
24. What color is imparted to Bunsen flame by strontium salt?
[A] Blue green
[B] Green color of apple
[C] crimson red
[D] none of these
Answer: C
25. A person feels weightless inside an artificial satellite because the force of attraction of the earth?
[A] is zero at that place
[B] is balanced by the force of attraction of the moon
[C] centripetal force is equal to
[D] Ineffective due to the special design of the satellite
Answer: C
26. What are modern powerful magnets made of?
[A] Iron compounds
[B] Ferromagnetic materials
[C] Alloys of aluminium, cobalt and nickel
[D] Alloys of iron, cobalt and nickel
Answer: C
27.Which of the following event happened first?
[A] Albert Einstein presented the theory of general relativity
[B] Max Planck propounded the quantum theory
[C] Marconi sent the first wireless signal
[D] Madame Curie became the first woman Nobel laureate
Answer: C
28. What are the main colors in photography?
[A] Red, Blue, Yellow
[B] Red, Yellow, Green
[C] Red, Blue, Green
[D] Blue, Yellow, Green
Answer: C
29. When lemon juice is poured on the baking soda, it rises sharply because of the gas produced by it?
[A] Hydrogen
[B] Oxygen
[C] Carbon dioxide
[D] none of these
Answer: C
30.Which of the following types of photo prints have the longest life span?
[A] colored prints with fixer
[B] Color print without Pixar
[C] black and white print
[D] Computer developed black and white print
Answer: C
31.Heating takes place?
[A] on positive depreciation
[B] negative depreciation
[C] neutral state
[D] none of these
Answer: [A]
32. How much quantity of clean air is required for a human being?
[A] 1000 cubic feet of air every 20 minutes
[B] 1000 cubic feet of air every 20 seconds
[C] 1000 cubic feet of air every 10 minutes
[D] 1000 cubic feet of air every 10 seconds
Answer: [D]
33. Refrigeration is the process by which?
[A] germs die
[B] The growth rate of germs decreases
[C] The efficiency of germs stops
[D] Plasma of germs becomes
Answer: [B]
34. Where is the largest retrospective telescope of Asia?
[A] Kodaikanal
[B] Ooty
[C] Kavalur
[D] Nainital
Answer: [C]
35. A rear-view mirror for driving a vehicle is?
[A] Ordinary
[B] concave
[C] Convex
[D] inverted
Answer: [C]
36. Submarines move in water. Which of the following fuel is used in their engines?
[A] Petrol and Oxygen
[B] Diesel
[C] Battery
[D] Steam
Answer: [D]
37. What is a hologram?
[A] Graphical representation to show the frequency distribution
[B] 3D MR I.
[C] Photographic record for reproduction of a three dimensional image
[D] A liquid crystal display
Answer: [C]
Which of the following color combinations is most convenient during day and night?
[A] Orange and Blue
[B] White and Black
[C] Yellow and Blue
[D] Red and Green
Answer: [D]
Which of the following liquids is the most dense (viscous)?
[A] Oil
[B] Milk
[C] water
[D] Petrol
Answer: [A]
What is used in hydraulic press?
[A] Pascal’s law
[B] Bernoulli’s law
[C] Archimedes’ principle
[D] Boyle’s law
Answer: [A]
Science Quiz Questions and Answers for Class 8
Que.-16. What is the magnification of an electron microscope?
Ans. 100000.
Que.-17. Who in 1786 invented the gold leaf electro scope?
Ans. Abraham Bennet.
Que.-18. Who proposed elliptical orbits?
Ans. Sommerfeld.
Que.-19. Which is the monocarpic plant which shows gregarious flowering once in 48 years?
Ans. Bamboo.
Que.-20. Who encouraged Newton to write his idea for principia?
Ans. Edmund Halley.
Que.-21. How many atomic orbitals are known? What are they?
Ans. Four. S, p, d, and f.
Que.-22. Write an example of serendipity.
Ans. Discovery of penicillin by Fleming.
Que.-23. Who in 1808 discovered polarization of light and introduced the term ‘Polarization’?
Ans. Etienne-Louis Malus.
Que.-24. What is the maximum number of electrons that can be accommodated in an orbital?
Ans. 2.
Que.-25. What do you mean by Hydroponics?
Ans. Plant growth in liquid culture medium.
Que.-26. The first scientist to apply scientific reasoning to cosmology was Rene Descartes. What was his theory called?
Ans. Vortex Theory.
Que.-27. How many orbitals present 5f subshell?
Ans. Seven.
Que.-28. What is the technique of separation of disrupted cell components?
Ans. Fractionation.
Que.-29. In which year did Otto Von Guericke demonstrate his famous Magdeburg experiment dealing vacuum?
Ans. 1672.
Que.-30. On which property of electrons does the electron microscope work?
Ans. Wave nature.
Science Quiz Questions and Answers for Class 10
Que.-31. What is EM?
Ans. Electron microscope.
Que.-32. Who was the first to attack Newton’s Corpuscular theory of light?
Ans. Thomas Young.
Que.-33. The element with the minimum atomic number having 8 electrons in the outer most shell is what?
Ans. Neon.
Que.-34. Name two monocarpic plants which show gregarious flowering.
Ans. Bambusa tulda, Melocanna bambusoides.
Que.-35. Name the gas used for making vegetable ghee?
Ans. Hydrogen
Que.-36. Which is the largest gland in the human body?
Ans. Liver
Que.-37. The smallest functional unit of a kidney is the ?
Ans. Nephron
Que.-38. James D. Watson, a Nobel Prize winning scientist is expert in the field of .
Ans. Genetics
Que.-39. Who was the first person to design models of flying machine?
Ans. Leonardo da Vinci.
Que.-40. The s-orbital of the L shell is represented as what?
Ans. 2s.
Que.-41. Who was the first pre-Socratic philosopher to suggest that matter could neither be created nor destroyed?
Ans. Parmenides.
Que.-42. Which quantum number gives the shape of the orbital?
Ans. Azimuthal quantum number.
Que.-43. What is ecosystem?
Ans. The entire living community and non-living factors of the environment together from the ecosystem.
Que.-44. Under what system, organisms are provided with scientific means?
Ans. Binomial nomenclature.
Que.-45. Who in 1749 developed a method for making an artificial magnet?
Ans. John canton.
Science Quiz Questions and Answers for Class 9
Que.-46. Saliva helps in the digestion of .
Ans. Starch
Que.-47. Which Parent’s chromosome is used for sex determination test?
Ans. Father
Que.-48. The bio-gas used for cooking is a mixture of .
Ans. Methane & Carbon dioxide
Que.-49. What is the maximum number of electrons in principal energy level?
Ans. K-2, L-8, M-18, N-32.
Que.-50. What is the name of that branch of Biology which devoted to identifying, naming and classifying organisms?
Ans. Taxonomy.
Que.-51. Hydrodynamica gave explanation of Bernoulli’s theorem in 1738. Who was the first to suggest this theorem?
Ans. Daniel Bernoulli.
Que.-52. What is the atomic number of the element which has 3 electrons in its M shell?
Ans. 13.
Que.-53. Who was the author of ‘Man’s place in nature’?
Ans. Huxley.
Que.-54. Who invented Leyden jar?
Ans. Pieter Van Musschenbroek and Ewald Georg von Kleist.
Que.-55. Which atom has only one electron?
Ans. hydrogen.
Que.-56. Both living and the non-living are made of same elements and are governed by the similar physical laws. In which respect are they different?
Ans. Level organization.
Que.-57. is used as a catalyst for the synthesis of Sulphuric Acid by Contact Process.
Ans -: Platinum (Pt)
Que.-58. Vanaspati Ghee is synthesized with the help of which catalyst?
Ans -: Nickle (Ni)
Que.-59. Expand the TMV.
Ans. Tobacco Mosaic Virus.
Que.-60. What did Sir William Herschel discover in 1800?
Ans. Infra-red radiation.
SCIENCE QUESTIONS AND ANSWERS
- Question – Carbon dating method is adopted to determine the age of? Answer – Fossils.
- Question – Which part of the body is particularly affected by excessive alcohol consumption? Answer – Liver
- Question – Which organ does the work of blood bank in the body? Answer-fament (Spleen).
- Question – What is the unit of photosynthesis in green plants called? Answer-Quantasome.
- Question – What is the main function of white blood cells in the body? Answer – To protect the body from diseases.
- Question – How many chambers are there in the heart of a fish? Answer – Two (Two Chambered)
- Question – Which organ performs the function of separating undesirable substances from the blood in the human body? Answer – Kidney.
- Question – What is the famous ‘Apsara’ after completing forty years? Answer – Nuclear reactor.
- Question – What is the function of Dynamo? Answer – Production of electrical energy from mechanical energy.
- Question – Which radioactive element was obtained from pitchblende? Answer Radium.
- Question – What is the reason for the change of color in the skin of a chameleon? Answer – Due to the presence of innumerable pigment cells called melanophores in his skin
- Question – Which is the most abundant organic compound found in nature? Answer – Cellulose
- Question – Why do trees growing on the banks of the sea do not have annual rings? Answer – Because there is no clear variation in the climate here. ,
- Question- Under which branch of science is the study of old age done? Answer – Gerontology.
- Question – Dolomite (Cacos) is an ore of? Answer – Calcium. Question – Which vitamin is found in citrus fruits? Answer – Vitamin
- Question- What is the instrument used to measure the intensity of sound called? Answer – Audiometer.
- Question- By whom does milk turn sour? Answer – By bacteria.
- Question- By whom does milk turn sour? Answer – By bacteria.
- Question: In the spectrum of white light, which color is most deviated by the prism? Answer – Purple.
- Question – What is the refrigerant in the refrigerator? Answer: Freon.
- Question – Which bacteria are helpful in making curd from milk? Answer – Lacto-bacillus.
- Question- Dialysis is done when the organ is not functioning? Answer – Kidney.
- Question – What is the largest part of the human brain? North Cerebrum.
- Question- The shock caused by firing a rifle is an example of protection of? Answer – Conservation of linear momentum.
- Question: Who is the first scientist to synthesize genes in the laboratory? Answer – Hargovind Khurana
- Question- What is the reason for the absence of atmosphere on the moon? Answer – There the root mean square velocity of all gases is greater than their escape velocity.
Science One Liner Questions
- प्रश्न – किस एक कोशिकीय शैवाल (Unicellular Algae) का उपयोग अन्तरिक्ष में खाद्य की समुचित पूर्ति के लिए किया जाता है? उत्तर क्लोरेला (Chlorela)
- प्रश्न – प्राकृतिक रबर किसका बहुलक (Polymer) है? उत्तर -आइसोप्रीन (Isoprene) का .
- प्रश्न- द्रव्य की चौथी अवस्था क्या कहलाती है? उत्तर-प्लाज्मा (Plasma) .
- प्रश्न-प्रत्यावर्ती धारा की माप किस यंत्र से की जाती हे? उत्तर- तप्त तार अमीटर (hot Wire Ammeter) से .
- प्रश्न – प्रकाश तरंगों के किस गुण से उनके अनुप्रस्थ होने का प्रमाण मिलता है? उत्तर – ध्रुवण(Polarisation) से .
- प्रश्न- एक वृत्ताकार वलय (Circular Ring) का गुरुत्व केन्द्र कहाँ होता है? उत्तर- वलय वृत्त के केन्द्र पर .
- प्रश्न – मानव रक्त का pH मान होता है? उत्तर -7.4 .
- प्रश्न – खनिज संरचना की दृष्टि से हीरा क्या होता है? उत्तर – कार्बन .
- प्रश्न – ग्रह गति (Planetary Motion) का सिद्धान्त किसने प्रतिपादित किया? उत्तर – कोप्लर ने .
- प्रश्न- हाइड्रोजन बम किस सिद्धान्त पर आधारित है? उत्तर- नाभिकीय संलयन (Nuclear Fusion)पर .
- प्रश्न – प्रोट्रॉन की खोज किसने की थी? उत्तर – रदरफोर्ड ने .
- प्रश्न- कौनसा पदार्थ पृथ्वी पर तीनों अवस्थाओं में पाया जाता है? उत्तर- पानी
- प्रश्न – हीरे के सम्बन्ध में कैरेट (Carat) क्या होता हे? उत्तर – हीरे के भार का मात्रक (Unit of Weight of diamond) .
- प्रश्न- गैल्वेनीकृत लोहे पर किसका लेप होता है? उत्तर- जिंक का
- प्रश्न – गैल्वेनीकृत लोहे पर किसका लेप होता है? उत्तर – जिंक का
- प्रश्न- भारत में 28 फरवरी को विज्ञान दिसव किस उपलक्ष्य में मनाया जाता है? उत्तर – सी.वी.रमन द्वारा रमन प्रभाव की खोज करने के दिन के उपलक्ष्य में .
- प्रश्न- 7 नवम्बर, 1888 भारत के किस महान वैज्ञानिक का जन्मदिन है? उत्तर सी.वी.रमन का .
- प्रश्न – आयोडीन युक्त नमक का प्रयोग किस बीमारी की रोकथाम के लिए किया जाता है? उत्तर – गलगण्ड (Goitre) .
- प्रश्न – विद्युत मोटर का क्या कार्य है? उत्तर – विद्युत ऊर्जा का यांत्रिक ऊर्जा में रुपान्तरण करना।
- प्रश्न- हरे पौधों में प्रकाश-संश्लेषण की इकाई क्या कहलाती है? उत्तर क्वाण्टासोम(Quantasome) .
- प्रश्न – पृथ्वी का औसत घनत्व क्या है ? उत्तर -5.5 ग्राम/घन सेंटीमीटर .
- प्रश्न – सूर्य सदैव पूर्व में निकलता है, क्योंकि? उत्तर – पृथ्वी पश्चिम से पूर्व की ओर घूमती है। .
- प्रश्न – पौधों में वाष्पोत्सर्जन दर के निर्धारण के लिए किस यंत्र का उपयोग किया जाता है? उत्तर-पोटोमीटर का .
- प्रश्न- रेड लेड का रासायनिक सूत्र क्या है ? उत्तर -Pb304 .
- प्रश्न- मानव शरीर में विटामिन K का निर्माण किस अंग में होता है? उत्तर कोलन में बैक्टीरिया द्वारा
- प्रश्न- ‘DARK AVENGER’ क्या है? उत्तर- एक प्रकार का प्रमुख कम्प्यूटर वायरस
- प्रश्न – फाइकोलॉजी (Phycology) के तहत विज्ञान की किस शाखा का अध्ययन किया जाता है?उत्तर – शैवाल (Algae) का .
- प्रश्न – किस विटामिन में कोबाल्ट (Cobalt) पाया जाता है? उत्तर विटामिन B12 में .
- प्रश्न – ‘मेनिनजाइटिस’ (ताविका शोध) नामक रोग में शरीर का कौन सा अंग प्रभावित हो जाता है? उत्तर – मस्तिष्क .
- प्रश्न- मानव शरीर में रक्त का थक्का नहीं बनने का प्रमुख कारण है? उत्तर हिपेरिन की उपस्थिति .
- प्रश्न-चाय बनाने के लिए विद्युत द्वारा केतली में पानी किस विधि द्वारा गर्म होता है? उत्तर- कन्वेक्शन द्वारा .
- प्रश्न – वृद्धों के चिकित्साशास्त्रीय अध्ययन (Medical Study) को क्या कहा जाता है? उत्तर – गैरियाट्रिक्स (Geriatrics) .
- प्रश्न – हाइपोग्लाइसेमिया (Hypoglycemia) नामक रोग रक्त में किसकी कमी से होता है? उत्तर – ग्लूकोस .
- प्रश्न- एच.टी.एल.वी.-।। नामक वायरस से कौन सा रोग फैलता है? उत्तर एड्स (Aids)
- . प्रश्न – मानव शरीर में सबसे छोटी ग्रंथि है? उत्तर -पिट्यूटरी .
- प्रश्न- एन्जाइम मूलत: क्या है? उत्तर-प्रोटीन .
- प्रश्न-पित्त का निर्माण शरीर के किस भाग में होता है? उत्तर यकृत (Liver) में .
- प्रश्न- कृष्ण छिद्र (Black hole)सिद्धान्त को प्रतिपादित किया था? उत्तर एस. चन्द्रशेखर ने .
- प्रश्न – साइनोकोवालमिन क्या है? उत्तर – विटामिन B12
Science Questions
Question 1. कौन से ग्रह पूर्व से पश्चिम की ओर परिक्रमा करते हैं?
Question 2. पेरिस्कोप में किस दर्पण का प्रयोग होता है ?
Question 3. मौसम के पूर्वानुमान हेतु किसका प्रयोग किया जाता है ?
Question 4. टोर्च में किस दर्पण का प्रयोग होता है ?
Question 5. ज्वलनशील पदार्थ बड़ी शीघ्रता से आप पकड़ते हैं ऐसा इसलिए क्योंकि उनमें ?
Question 6. कवक और बैक्टीरिया जैसे जीवों का प्रयोग खरपतवारों को नष्ट करने के लिए किया जाता है , ऐसे जैविक घटक क्या कहलाते हैं ?
Question 7. जब वर्षा जल का इस्तेमाल भूजल के पुनर्भरण के लिए किया जाए तो इसे क्या कहते है ?
Question 8. तरल दबाव को मापने के लिए प्रयोग किए जाने वाला उपकरण कौन सा है ?
Question 9. रक्त में उपस्थित कौन सी कोशिका रोगाणुओं से लड़ने में मदद करती हैं?
Question 10. हृदय गति को मापने के लिए डॉक्टर द्वारा इस यंत्र का प्रयोग किया जाता है ?
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