ECAT 2013 CHEMISTRY

Note:-Please write the answer in comment box.it will help us a lot in finding answer of these questions. 1) When Borax Is Hydrolized Then Caustic Soda And Boric Acid Is Produced Then The Solution Is a) Neutral b) Acidic c) Alkaline d) Basic 2) In Exothermic Reaction If Temp Is Increased Then Reaction Moves a) Backward b) Forward c) No change d) None 3) Nylon Is Which Type Of Polyme a) Condensation b) Addition c) Both d) None 4) How Many Maximum Amino Groups In Amino Acid? a) 1 b) 2 c) 3 d) 4 5) Lithium and sodium both belongs to same group but Lithium differs in properties remarkably because a) Lithium is lighter than sodium b) large charge to size ratio c) Li slowly react with water d) All 6) The repeating unit is(-ch2-ch2-)n the molecular mass of repeating unit is a) 6300 b) 63000 c) 5800 d) None 7) which has no Hydrogen bonding a) Alcohol b) Water c) Ethane d) Acetic Acid 8) which one is not true about hydrocarbons a) They are aromatic compound b) They have high C-H ratio c) They are ring compound d) All have odour 9) hydroocarbon containing triple bond are a) Alkene b) Aromatic c) Alkane d) Alkyne 10) Suring the preparation of Na electrolysis of sodium salt CaCl2 Is added to a) To increase the temperature b) To decrease the temperature c) No effect d) None 11) Oxidation state of cl in NaCl and NaOCl is a) -1,+1 b) 2,-1 c) -1,2 d) None 12) which of following does not have haxagonal structure a) Zn b) Zn Oxide c) Graphite d) Gold 13) Phenol is a) Similar to alcohol b) Contains one OH c) It is aromatic containing benzene ring d) Both b & c 14) Zn can be converted into Cu by a) Neutron b) &#913 particles c) &#914 particles d) None 15) How to obtain bio gas? a) It is not a gas b) Obtained from cattle waste c) Obtained from underwater reservoir d) None 16) Which one is covalent giant molecule? a) Diamond b) Sugar c) Ice d) None 17) What is oxidation state of Sulphur in Na2SO4? a) 2 b) 5 c) 4 d) None 18) Free Cl forms is?? a) Lithosphere b) Troposphere c) Biosphere d) Stratosphere