10th Class General Knowledge Science and Technology Question Bank

done Science and Technology Total Questions - 20

• question_answer1)
  Willem Einthoven was a Dutch doctor and physiologist. He invented a common medical tool which is in use today. He received the Nobel Prize in Medicine in 1924 for his invention. What was his invention? 
  A)
   X-ray machine   done clear
  B)
   CAT Scanner    done clear
  C)
          ECG                done clear
  D)
          MRI done clear
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• question_answer2)
  Clyde Tombaugh is credited with the discovery of this object on the fringes of our Solar System in 1930. He did so by systematically imaging the night sky in pairs of photographs, then examining each pair and determining whether any objects had shifted position. Name the object.
  A)
   Ceres    done clear
  B)
          Triton   done clear
  C)
          Deimos done clear
  D)
          Pluto done clear
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• question_answer3)
  pH is a measure of the concentration of hydrogen ions in a solution. The lower the pH, the higher the concentration of hydrogen ions, and the more acidic a solution is. Alkaline or basic solutions have lower concentrations of hydrogen ions, and a pH above 7. Which of the following substances has the highest pH value?
  A)
   Pineapple juice done clear
  B)
          Caustic soda done clear
  C)
          Wine                done clear
  D)
          Blood               done clear
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• question_answer4)
  Fat can be separated from milk in a cream separator because of
  A)
   Centrifugal force done clear
  B)
          Cohesive force done clear
  C)
                      Gravitational force done clear
  D)
          Centripetal force done clear
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• question_answer5)
  The Indian Space Research Organisation (ISRO) successfully launched 104 satellites from Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh. Which of the following is the rocket vehicle used to launch 104 satellites
  A)
   PSLV-C37        done clear
  B)
          PSLV-C38        done clear
  C)
   PSLV-C39        done clear
  D)
          PSLV-C40        done clear
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• question_answer6)
  Which special physical trait does the cat called 'Hemingway cat" possess?
  A)
   Short tail done clear
  B)
   Extra toes done clear
  C)
   Curly fur done clear
  D)
   Mismatched eye colors done clear
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• question_answer7)
  Which of the following term describes the alignment of three celestial bodies?
  A)
   Syzygy done clear
  B)
          Sizzle    done clear
  C)
          Stretch done clear
  D)
          Symbology done clear
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• question_answer8)
  The time when the Sun crosses the plane of the Earth's equator, making night and day of approximately equal lengths all over the Earth is called
  A)
   Easter                  done clear
  B)
       Equinox      done clear
  C)
                                  Eclipse                 done clear
  D)
           Solistice                                    done clear
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• question_answer9)
  For his scientific work, he was awarded the Nobel Prize in Chemistry in 1954. In 1962, for his peace activism, he was awarded the Nobel Peace Prize. This makes him the only person to be awarded two unshared Nobel Prizes. Who is this incredible gentleman?               
  A)
   Linus Pauling                done clear
  B)
   Frederic Joliot     done clear
  C)
                      Richard Feynman done clear
  D)
          Aage Bohr                    done clear
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• question_answer10)
  Named after a Norse king, this wireless technology standard enables the exchange of data over short distances, from fixed and mobile devices, using short-wavelength UHF radio waves. It was invented by telecom vendor Ericsson in 1994 as an alternative to wireless. What is it called?                   
  A)
   Oneplus               done clear
  B)
          Xender                done clear
  C)
          Bluetooth    done clear
  D)
          Fugu                        done clear
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• question_answer11)
  The difference between an exothermic chemical reaction and an endothermic one is that one releases energy while the other uses energy. Which of the following is not an example of an exothermic reaction?                          
  A)
   Burning a log       done clear
  B)
                Water freezing into ice done clear
  C)
               Photosynthesis                  done clear
  D)
   Burning of sugar in the body     done clear
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• question_answer12)
  The Indian Navy has recently inducted four sonar systems to boost its underwater surveillance capabilities. Which of the following is not one of these four systems?
  A)
   PALS   done clear
  B)
          ABHAY            done clear
  C)
   HUMSA-UG      done clear
  D)
          AIDSS              done clear
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• question_answer13)
  From where was India's multipurpose telecommunication satellite INSAT-2E launched?
  A)
   Thumba           done clear
  B)
          Baikanour         done clear
  C)
   Kourou done clear
  D)
          Sriharikota done clear
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• question_answer14)
  The Chandrasekhar Limit is accepted to be approximately 1.4 times the mass of the Sun. A star that exceeds this mass is destined to end its life in a most violent form of explosion. What is it called when a star explodes in this manner?
  A)
   Red giant                      done clear
  B)
   Black hole         done clear
  C)
          White dwarf      done clear
  D)
          Supernova done clear
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• question_answer15)
  The 38 elements in groups 3 through 12 of the periodic table are called 'transition metals'. Transition metals include 3 elements that are known to produce a magnetic field. Which of the following is not one of them?  
  A)
   Iron      done clear
  B)
                      Cadmium         done clear
  C)
   Cobalt  done clear
  D)
          Nickel done clear
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• question_answer16)
  Scientists believe that about 75% of the universe consists of dark matter and dark energy, but roughly 75% of the ordinary matter consists of this element, with helium making up nearly 25%, and all of the other elements adding up to less than 1%. Name this element.
  A)
   Carbon             done clear
  B)
   Nitrogen            done clear
  C)
          Oxygen done clear
  D)
          Hydrogen          done clear
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• question_answer17)
  Light is deflected when it passes obliquely through the interface between one medium and another, or through a medium of varying density. What will happen when a light ray travelling in glass is incident on an air surface?
  A)
   It will refract away from the normal. done clear
  B)
   Some of the light may be reflected. done clear
  C)
   All of the light may be reflected. done clear
  D)
   All of these may happen. done clear
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• question_answer18)
  The American theoretical physicist shown in the picture is known for his work in quantum electrodynamics, for which he received the Nobel Prize in Physics in 1965. He assisted in the development of the atomic bomb during World War II and became known to a wide public in the 1980s as a member of the panel that investigated the Space Shuttle Challenger disaster. Identify this scientist.
  A)
   Erwin Schrodinger          done clear
  B)
   Richard Feynman           done clear
  C)
   Max Planck       done clear
  D)
          Paul Dirac done clear
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• question_answer19)
  Phytohomnones are chemicals that regulate plant growth. They are signal molecules produced within the plant, and occur in extremely low concentrations. Which of the following are not phytohormones?
  A)
   Auxins              done clear
  B)
   Jasmonates       done clear
  C)
   Cytokinins         done clear
  D)
          Corticoids         done clear
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• question_answer20)
  What is the term given to each of two or more alternative forms of a gene that usually arise by mutation and are found at the same place on a chromosome?
  A)
   Locus               done clear
  B)
   Allele    done clear
  C)
          DNA                done clear
  D)
          RNA done clear
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