How many mL of 0.125 M Cr³⁺ must be reacted with 12.00 mL of 0.200 M if the redox products are and Mn²⁺?

 

1.  8 mL

2.  16 mL

3.  24 mL

4.  32 mL

 

At 300 K, the 36 g of glucose present per litre of solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of the solution is 1.52 bar at the same temperature, what would be its concentration?

1.  11 g L^-1

The composition of a sample of wurtzite is Fe_0.93O. What percentage of the iron is present in the form of Fe (III)?

 

1.  5%

When acidified K₂Cr₂O₇ solution is added to Sn²⁺ salts, then Sn²⁺ changes to

 

1.  Sn

What would be the expected product of the reaction of propyne with Br₂/H₂O if the mechanism of this reaction is analogous to that of propene?

 

1.  2-brompropenol

Which of the following carbocation would have the greatest stability?

 

1.  CH₃ -S-CH₂⁺

Electron affinity is positive, when

 

1.  O changes into O^-

Which one of the following pairs represents stereoisomerism?

 

Using the date given below find out the strongest reducing agent. 
E^oCr₂O₄/Cr³⁺ = 1.33 V, E^o Cl₂/Cl^- = 1.36 V, 
E^o/Mn²⁺ = 1.51 V, E^o Cr³⁺/Cr = -0.74 V

 

1.  Cl^-

EMF of Daniell cell was found using different concentrations of Zn²⁺ion. A graph was then plotted between E_cell and log\(\frac{[Zn^{2+}]}{[Cu^{2+}]}\). The plot was found to be linear with an intercept of \(E_{cell}\) axis equal to 1.10 V. E_cell for Zn/Zn²⁺ (0.1 M)||Cu²⁺(0.01 M)| Cu will be:

1. 1.10 V
2. 1.0705 V
3. 0.93 V
4. 0.078 V