CBSE 10th Science - Chemistry

Last 5 year solutions (2011 - 2015)

Prepare for CBSE class 10 Science board paper with the help of previous years (2011-2015) solved question papers.
36 video solutions

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 20
by added on Fri Feb 20 10:04:56 UTC 2015 1626 views
Question - The atomic number of an dement is 16. Predict (i) the number of valence electrons in its atom (ii) its valency (iii) its group number (iv) whether it is a metal or a non-metal (v) the nature of oxide formed by it (vi) the formula of its chloride Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 19
by added on Fri Feb 20 10:00:39 UTC 2015 718 views
Question - Write chemical equations to show what happens when (i) ethanol is heated with concentrated sulphuric acid at 443 K. (ii) ethanol reacts with ethanoic acid in the presence of an acid acting as a catalyst. (iii) an ester reacts with a base Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 27
by added on Fri Feb 20 10:02:55 UTC 2015 517 views
Question - A student added acetic acid to test tubes I, II, III and IV containing the labeled substances and then brought a burning splinter near the mouth of each test tube. -------------- The splinter would be extinguished when brought near the mouth of test tube. A. I B. II C. III D. IV Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2014 - Chemistry - Question 1
by added on Fri Feb 20 10:13:28 UTC 2015 406 views
Question - The atomic numbers of three elements A, B and C are 12, 18 and 20 respectively. State, giving reason, which two elements will show similar properties. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 19
by added on Fri Feb 27 11:05:10 UTC 2015 372 views
Question - Write chemical equations to show what happens when (i) ethanol is heated with concentrated sulphuric acid at 443 K. (ii) ethanol reacts with ethanoic acid in the presence of an acid acting as a catalyst. (iii) an ester reacts with a base Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2014 - Chemistry - Question 1
by added on Thu Feb 26 10:42:37 UTC 2015 318 views
Question - The atomic numbers of three elements A, B and C are 12, 18 and 20 respectively. State, giving reason, which two elements will show similar properties. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 4
by added on Fri Feb 27 11:14:00 UTC 2015 287 views
Question - Draw the structure of Butanone molecule, CH_3COC_2H_5. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2014 - Chemistry - Question 8
by added on Thu Feb 26 10:43:22 UTC 2015 273 views
Question - Study the following table in which positions of six elements A, B, C, D, E and F are shown as they are in the modern periodic table: ---------------- On the basis of the above table, answer the following questions: (i) Name the element which forms only covalent compounds. (ii) Name the element which is a metal with valency three. (iii) Name the element which is a non-metal with valency three. (iv) Out of D and E, which is bigger in size and why? (v) Write the common name for the family to which the elements C and F belong. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 4
by added on Fri Feb 20 10:07:11 UTC 2015 270 views
Question - Draw the structure of Butanone molecule, CH_3COC_2H_5. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 24 b
by added on Fri Feb 20 10:04:17 UTC 2015 209 views
Question - Explain isomerism. State any four characteristics of isomers. Draw the structures of possible isomers of butane, C_4H_10. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2014 - Chemistry - Question 9
by added on Fri Feb 20 10:11:33 UTC 2015 179 views
Question - The elements Be, Mg and Ca each having two electrons in their outermost shells are in periods 2, 3, and 4 respectively of the modern periodic table. Answer the following questions, giving justification in each case: (i) Write the group to which these elements belong. (ii) Name the least reactive element. (iii) Name the element having largest atomic radius. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2014 - Chemistry - Question 9
by added on Mon Mar 02 12:10:22 UTC 2015 163 views
Question - The elements Be, Mg and Ca each having two electrons in their outermost shells are in periods 2, 3, and 4 respectively of the modern periodic table. Answer the following questions, giving justification in each case: (i) Write the group to which these elements belong. (ii) Name the least reactive element. (iii) Name the element having largest atomic radius. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2014 - Chemistry - Question 8
by added on Fri Feb 20 10:12:36 UTC 2015 150 views
Question - Study the following table in which positions of six elements A, B, C, D, E and F are shown as they are in the modern periodic table: ---------------- On the basis of the above table, answer the following questions: (i) Name the element which forms only covalent compounds. (ii) Name the element which is a metal with valency three. (iii) Name the element which is a non-metal with valency three. (iv) Out of D and E, which is bigger in size and why? (v) Write the common name for the family to which the elements C and F belong. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2014 - Chemistry - Question 8
by added on Mon Mar 02 12:11:54 UTC 2015 145 views
Question - Study the following table in which positions of six elements A, B, C, D, E and F are shown as they are in the modern periodic table: ---------------- On the basis of the above table, answer the following questions: (i) Name the element which forms only covalent compounds. (ii) Name the element which is a metal with valency three. (iii) Name the element which is a non-metal with valency three. (iv) Out of D and E, which is bigger in size and why? (v) Write the common name for the family to which the elements C and F belong. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2014 - Chemistry - Question 9
by added on Thu Feb 26 10:44:02 UTC 2015 141 views
Question - The elements Be, Mg and Ca each having two electrons in their outermost shells are in periods 2, 3, and 4 respectively of the modern periodic table. Answer the following questions, giving justification in each case: (i) Write the group to which these elements belong. (ii) Name the least reactive element. (iii) Name the element having largest atomic radius. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 11
by added on Fri Feb 20 09:59:40 UTC 2015 132 views
Question - In the modern periodic table, the element Calcium (atomic number = 20) is surrounded by elements with atomic numbers 12, 19, 21 and 38. Which of these elements has physical and chemical properties resembling those of Calcium and why? Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 30
by added on Fri Feb 20 10:06:12 UTC 2015 125 views
Question - A cleaned aluminium foil was placed in an aqueous solution of zinc sulphate. When the aluminium foil was taken out of the zinc sulphate solution after 15 minutes, its surface was found to be coated with a silvery grey deposit. From the above observation it can be concluded that: A. Aluminium is more reactive than zinc B. Zinc is more reactive than aluminium. C. Zinc and aluminium both are equally reactive. D. Zinc and aluminium both are non-reactive Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 10
by added on Fri Feb 20 10:10:18 UTC 2015 111 views
Question - How does the metallic character of elements change along a period of the periodic table from the left to the right and why? Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 29
by added on Fri Feb 20 10:08:10 UTC 2015 103 views
Question - Vapours of acetic acid smell: A. Pungent like vinegar. B. Sweet like rose. C. Suffocating like sulphur dioxide. D. Odorless like water. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 10 - 2011 - Chemistry - Question 38
by added on Fri Feb 20 10:09:07 UTC 2015 97 views
Question - Iron nails were dipped in an aqueous solution of copper sulphate. After about 30 minutes, it was observed that the colour of the solution changed from A. Colorless to light green. B. Blue to light green C. Blue to colourless. D. Green to blue. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 
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