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Class 10 Notes 2016 : Chemistry (Sharada Public School, Balrampur)

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Sagar Pathak
Sharada Public School, Balrampur
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http://www.cbseguess.com/ Sample Paper Subject: Chemistry Class 10th Time:- 2Hr Max Marks:- 35 Min Marks:- 28 Science Test Qus1 Qus2 Name the allotropes of carbon? Explain any one? (3) An element belonging to group 14 to the periodic table has two common allotropes A and B. A is very hard and a non-conductor of electricity while B is soft to touch and a good conductor of electricity. Identify the element? (2) Qus3 (a) Give the general formulae of alkynes . Identify the following: - CH4, C2H6, C2H2, C3H4, C2H4? (b) Give the molecular formulae of alkane, alkene, and alkynes? (4) Qus4 Name the following compound? (2) HHHH H-C-C-C-C-C= C-H HHHH Qus5 Calculate the molecular formulae? (4) (a) CH3OH and C2H5OH (b) C2H5OH and C3H7OH Qus6 Differentiate between soaps and detergent? (3) Qus7 The electron configuration of an element is 2, 8, and 7. (2) (a) Find the atomic number. (b) To which element in the following it would be chemically similar. N(7), F(9), P(15), A(18) Qus8 By considering their position in the periodic table, which one of the following elements would you expect to have the maximum metallic character? (2) Qus9 Elements X forms a chloride with the formulae XCl2 which is a solid at high melting point. X would most likely be in the same group? (2) (a) Na (b) Mg (c) Al (d) Si www.cbseguess.com Other Educational Portals www.icseguess.com | www.ignouguess.com | www.dulife.com | www.magicsense.com | www.niosguess.com | www.iitguess.com http://www.cbseguess.com/ Qus10 Carbon (atomic number 6) and silicon (atomic number 14) are elements in the same group of periodic table. Give the electron arrangements of carbon and silicon? (2) Qus11 The electron configuration of 3 elements X, Y and Z are:(3) X=2 Y = 2, 6 Z = 2, 8, 2 (a) Which element belongs to second period? (b) Which element belongs to second group? (c) Which belongs to 18 group? Qus12 The X, Y, Z belongs to group 2, 14, 16 respectively of the periodic table. (2) (a) Which two elements form covalent bond? (b) Which two elements form ionic bond? Qus13 The electron configuration of X is K, L, M (4) 2, 8, 6 (a) Find group number in periodic table? (b) Find periodic number in periodic table? (c) What is the number of valance electrons in an atom of X? (d) Valency of X? (e) Is it metal or non-metal? E.D.U.C.A.T.I.O.N. POINT THE AIM OF EDUCATION IS THE KNOWLEDGE NOT OF FACT, BUT OF VALUES PREPARED BY:- RICHA SETIA, PH:- 9999373616 www.cbseguess.com Other Educational Portals www.icseguess.com | www.ignouguess.com | www.dulife.com | www.magicsense.com | www.niosguess.com | www.iitguess.com

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