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  4. An insecticide contains 47.5 % C , 2.54 % H and 50 % Cl by mass. Its empirical formula is

Q. An insecticide contains and by mass. Its empirical formula is

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Solution:




Questions from KCET 2022

1. The metal pusified by (iquation is

2. Heisenberg uncertainity principle mathematically is

3. Clathatiates or Cage compounds formed by

4. The eleetron affinity. of halugens follow the order

5. Conductivity of a solution is directly proportional to

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1. If for a certain reaction is at , the value of (in for which the same reaction will be spontaneous at the same temperature is

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2. If of a non-electrolyte solute is dissolved in of n-octane to reduce its vapour pressure to , the molar mass (in of the solute is [Given that molar mass of n-octane is

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3. At standard conditions, if the change in the enthalpy for the following reaction is Given that bond energy of and is and , respectively, what is the bond energy (in of ?

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4. An organic compound contains (by wt.) carbon and remaining percentage of hydrogen. The right option for the empirical formula of this compound is: [Atomic wt. of is is ]

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5. The density of 2 M aqueous solution of NaOH is 1.28 g/cm. The molality of the solution is
[Given that molecular mass of NaOH = 40 g mol]

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6. Given below are half cell reactions:




Will the permanganate ion, liberate from water in the presence of an acid ?

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7. In water saturated air the mole fraction of water vapour is . If the total pressure of the saturated air is , the partial pressure of dry air is :

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8. Following limiting molar conductivities are given as



for will be-

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9. One atom of an element weighs . Its atomic mass is

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10. In the following reaction,
A,
the number of sigma(s) bonds present in the product A is :-

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