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அந்த வகையில் இன்று அறிவியல் பாடத்துக்கான (English Medium) மாதிரி வினாத்தாளை இந்தக் கட்டுரையில் காணலாம். 


10 STANDARD MODEL QUESTION PAPER - 2023


SCIENCE   


                                                                                          Total Marks: 75


Part – I



  • Answer all the questions. ( 12×1= 12)

  • Choose the most appropriate answer from the given four alternatives and write the option code and the corresponding answer.


 


1. Power of a lens is -2D, then its focal length is


a) – 0.5 m   b)  - 20 m                   c)  -0.25 m                      d)   - 2 m


 


2. Kilowatt hour is the unit of


a) resistivity b) conductivity           c) electrical energy      d)   electrical power


3.  Gamma radiations are dangerous because,



  1. a) it affects eyes and bones b) it affects tissues        

  2. c) it produces genetic disorder d) it produces enormous amount of heat


4. 1 mole of any substance contains ---------------molecules


a) 6.023 ×1023 b) 023 ×10-23       c) 3.0115 × 1023             d)   12.046 × 1023


 


5. Identify the non-aqueous solution



  1. a) Sodium chloride in water                b) Glucose in water       

  2. c) Copper sulphate in water                  d) Sulphur in carbon di sulphide


6) The secondary suffix used in IUPAC nomenclature of a Ketone is --------------



  1. a) - ol           b)    - oic acid          c)   - al                            d)  - one


7) The animals which give birth to young ones are



  1. a) Oviparous b) Viviparous          c)    Ovoviviparous        d) All the above


8) Which one is referred as “Master Gland”?



  1. a) Pineal gland b) Pituitary gland     c) Thyroid gland          d) Adrenal gland


9) Paleontologists deal with



  1. a) Embryological evidences           b) Fossil evidences         

  2. c) Vestigial organ evidences             d) All the above


10) We can cut the DNA with the help of  



  1. a) scissors b) restriction endonucleases   c) knife            d)  


 


 


11) Excessive consumption of alcohol leads to



  1. a) Loss of memory  b) Cirrhosis of liver        

  2. c) State of hallucination d) Supression of brain function 


12) Which is used to edit programs?



  1. a) Inkscape b) script editor      c) stage                d) sprite


 


Part – II


Answer any seven questions. Question No. 22 is compulsory.     (7×2=14)


13) How does an astronaut float in a space shuttle?


14) What are the causes of myopia?


15)  Define: Atomicity.


16) Differentiate reversible and irreversible reactions.


17) Draw and label the structure of oxysomes.


18) How does leech suck blood from the host?


19) How does binary fission differ from multiple fission?


20) What are Okazaki fragments?


21) What precautions can be taken for preventing heart diseases?


22) Three resistors of resistance 5 Ώ, 3 Ώ, and 2 Ώ are connected in series with 10V battery. Calculate their effective resistance and the current flowing through the circuit.


 


                                          Part – III


Answer any seven questions. Question No. 32 is compulsory.    (7×4 = 28)


23) Describe rocket propulsion.


24) Derive the ideal gas equation.


25) a) What is an echo?



  1. b) State two conditions necessary for hearing an echo.


26) The electronic configuration of metal A is 2, 8,18,1. The metal A when exposed to air and moisture forms B a green layered compound. A with con. H2SO4 forms C and D along with water. D is a gaseous compound. Find A, B, C and D.


27) Arrive at, systematically, the IUPAC name of the compound: CH3 – CH2 – CH2 –OH.


28) Enumerate the functions of blood.


 


29) What is bolting? How can it be induced artificially?


30) How does fossilization occur in plants?


31) Discuss the importance of biotechnology in the field of medicine.


32)  a) The hydroxide ion concentration of a solution is 1×10-11 M. What is the pH of the              solution?



  1. b) What is the ideal pH for blood?


 


 


                                          Part – IV


Answer all the questions. Draw diagrams wherever necessary.    (3×7 = 21)


33)  a) With the help of a circuit diagram derive the formula for the resultant resistance of       three resistances connected: (a) in series and (b) in parallel.


                                                                         (Or)



  1. b) i) Compare the properties of alpha, beta and gamma radiations. (Any 5)

  2.         ii) State Rayleigh’s law of scattering.


 


34) a) (i)What happens when MgSO4 .7 H2O is heated? Write the appropriate equation.


          (ii) Define: Solubility


                                                    (Or)



  1. b) How is ethanol manufactured from sugarcane?


 


35) a) With a neat labelled diagram explain the structure of a neuron.


                                                   (Or)



  1.  b) (i) What are the consequences of soil erosion? (5 Points)


          (ii) Differentiate the following.


                Aerobic and Anaerobic respiration.


 


மாதிரி வினாத்தாள் உருவாக்கம்


- ஆசிரியர் விமல்குமார் (A3 குழு), 


பட்டதாரி ஆசிரியர்,


அரசு மேல்நிலைப்பள்ளி, 


அரசம்பாளையம், கோயம்புத்தூர்.




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