1) What is the molecular mass of C6H12O6? a) 70u b) 180u c) 60u  d) 200u 2) Calculate the no. of moles in 36 g of carbon? a) 6.022x10^23 mole b) 6 moles c) 3moles d) 12 moles 3) What is molar mass of carbon in CO2? a) 0.3 b) 12 c) 44 d) 6 4) What is the symbol of Avogadro number? a) NA b) A.N c) AvN 5) Empirical formula of C6H12O6? a) C3H4O3 b) CH2O c) 6H2O 6) The unit of Molarity? a) M b) m c) Mo 7) The symbol of Molality? a) M b) m c) Mo 8) Percentage of carbon in C2H5OH? a) 52.14% b) 50.1X10^23 c) 13.13% 9) Mass % of Hydrogen in C2H5OH? a) 34.73% b) 13.13% c) 88.79% 10) Mass% of H in H2O? a) 88.79% b) 11.18% c) 18

Some Basic concepts of chemistry

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