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  4. Which of the following rare gas is the most abundant is air?

Q. Which of the following rare gas is the most abundant is air?

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Solution:

Correct answer is (c) Ar

Questions from KCET 2022

1. Clathatiates or Cage compounds formed by

2. The eleetron affinity. of halugens follow the order

3. Conductivity of a solution is directly proportional to

4. Which of the following is a Lewis acid ?

5. For the reaction , it is found that doubling the concentration of increases rate 4 times and doubling the concentration of B doubles the reaction rate. What is the overall order of the reaction ?

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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. 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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4. 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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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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