Class 12 > PYQ CHEMISTRY > 2017 > Set 1

2017

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Q1
Write the formula of an oxo-anion of Manganese (Mn) in which it shows the oxidation state equal to its group number.

Q3
For a reaction R ––> P, half-life (t½) is observed to be independent of the initial concentration of reactants. What is the order of reaction ?

Q5
Write one similarity between Physisorption and Chemisorption.

Q6
Complete the following reactions :
(i) NH₃ + 3Cl₂ (excess) –––––>
(ii) XeF₆ + 2H₂O –––––>
OR
What happens when
(i) (NH4)₂Cr₂O₇ is heated ?
(ii) H₃PO₃ is heated ?
Write the equations.

Q7
Define the following terms :
(i) Colligative properties
(ii) Molality (m)

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