The number average molar mass and mass average molar mass of a polymer are respectively 30,000 and 40,000. The polydispersity index (PDI) of the polymer is
1. -1
2. 0
3. > 1
4. < 1
1. -1
2. 0
3. > 1
4. < 1
1. K+ < Ca2+ < Mg2+ < Be2+
2. Be2+ < K2+ < Ca2+ < Mg2+
3. Mg2+ < Be2+ < K+ < Ca2+
4. Ca2+ < Mg2+ <Be+ < K+
1. 4.32
2. 3.34
3. 9.46
4. 5.97
1. 500 K
2. 400 K
3. 600 K
4. 200 K
glucopyranose is found at equilibrium in the aqueous solution?1. 64%
2. 36%
3. 100%
4. 50%
1. 0.0105 equivalent of H2C2O4. 2H2O<0.625g of Fe<0.006g atom of Ag<6.0×1021 atoms of Zn
2. 0.625 g of Fe < 0.0105 equivalent of H2C2O4 2H2O<6.0×1021 atoms of Zn<0.006g atoms of Ag
3. 0.625 g of Fe<6.0×1021 atoms of Zn<0.006 g atoms of Ag<0.0105 equivalent of H2C2O4.2H2O
4. 0.0105 equivalent of H2C2O4. 2H2O < 0.006 g atoms of Ag<6.0×1021 atoms of Zn<0.625 g of Fe
1. I > II > IV > III
2. IV > III > II > I
3. II > III > IV > I
4. III> IV> II> I
If for a given substance, melting point is T8 and freezing point is TA then correct variation of entropy by graph between entropy changes:
1.
2.
3.
4.
When a mixture of 1-hexanol and hexanoic acid in diethyl ether is shaken with an aqueous NaHC03solution, then which of the following is right distribution?
1. a
2. b
3. c
4. d
S and 
S for the reaction, 
, are 30.56 KJ mol-1 and 66.00 Jk-1 mol-1respectively. The temperature at which the free energy change for the reaction will be zero change for the reaction will be zero, is1. 3528 K
2. 463 K
3. 73 K
4. 144 K
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