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Class 10th science 5 marks questions (2010 to 2018) : 2010 Question 1 . Write the name and symbols of two most reactive metals belonging to group I of the periodic table. Explain by drawing electronic structure how either one of the two metals reacts with a halogen. With which name is the bond formed between these elements known and what is the class of the compound so formed known? State any four physical properties of such compounds. .                                        OR What is meant by refining of metals? Name the most widely used method of refining impure metals produced by various reduction processes. Describe with the help of a labeled diagram how this method may be used for refining of copper. Question 2 . Derive the expression for the heat produced due to a current ‘I’ flowing for a time interval ‘t’ through a resistor ‘R’ having a potential difference ‘V’ across its ends. With which name is the relation known? How much heat will an instrument of 12 W produce in

Hello students in the previous test we are amazed by your performances  Last time who missed the chance to be in top 3 this time they have chance to mention their name in top 3 so be conscious and focused while attempting the test. Best of luck students click to attempt test : Redox Rxn Test

NEWS : According to NASA scientist Alien came to earth without being noticed by Human being. Detailed News :I know you all are aware of term UFO(unidentified flying object). Now nasa scientist saying that Aliens may have travelled to earth without noticing to humans Nasa scientist Silvano P colombano, computer scientist at nasa made a statement : that outer planet creature may have come to earth without noticing to human due to their 'Vastly Different Looks'. He added that aliens come to earth in such a form that human cannot detect yet..... Humans are form of carbon but may not be aliens are carbon form then how can human can detect or see aliens. If we assume what kind of form can be of aliens(higher intelligence creature) these hypothesis will rise to some serious inquiries. Another scientist said that 'mutants' can be giant marine like creature who can suck to chemical. But after all, these all are theoretical statements.But humans still don't have

Hello students there is a surprise gift who will top in this test so attempt this test and click the options very carefully and don't forget to comment down your name and how was your experience?? click here to attempt test : link is now closed Well done students, we love your performance in this test do more hard work to get the prize in your hand. Now result of this test :  Students who came first : Aman kumar,vivek pandit Download your certificates ( Certificate ) Students who came 2nd :  Aamir khan saifi, MD. Modasshar Hussain,Gautam singh,Suraj Kashyap Students who came 3rd :  Shadan imami,Ankit singh

Hello students attempt your first test and show us your knowledge you have gained and don't forget to comment down your name when you are done with your test click here to attempt Test 1 : link is now closed Result of Test 1 ; Congratulations Parijat Dubey, Sakshi kumari and Sanoj kumar you all topped in Test 1. Now you all will get surprise gift from Ram sir. Parijat Dubey Download your certificate from here :  Your Certificate Sakshi kumari Download your certificate from here: Your Certificate Sanoj kumar Download your certificate from here:  Your Certificate Enjoy your learning with Pooja Academy  Next test will be held soon stay tuned with us........ Test 2 : very soon.....

Hello students tomorrow is your test questions will be asked from chapter 8 gravitation so be prepare for the test  *Some 1 mark questions that asked in your CBSE exams are 1. Why is gravitational potential energy always negative? 2. On which fundamental law of physics Kepler's second law is based? 3. At what height above the surface of earth value of 'g' reduced to half of its value of surface of earth? 4. Where will weight of body be more at delhi or shimla? Why? 5. Earth attract apple and it falls down but earth doesn't move towards apple why? Comment down your answer with your name if you want answer of these question then stay tuned with pooja academy answers will be updated very soon.....

Hello students this is your first test Attempt all question and show us your knowledge Click here for test  Attempt your test This is your test 2 High order thinking skills(H.O.T.S) questions in test so think twice before clicking the answers best of luck click here for test    Attempt test 2