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  1. Tardigrade
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  3. Chemistry
  4. The reaction condition leading to the best yield of <msub><mi></mi></msub> C2H5Cl are:

Q. The reaction condition leading to the best yield of are:

NTA AbhyasNTA Abhyas 2020 Report Error

Solution:

During chlorination of alkane, if excess of an alkane is treated with in presence of light or heat, the chance of mono–chlorination predominate.

Questions from NTA Abhyas 2020

1. Volume of required to neutralize of is

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2. The lanthanide contraction is responsible for the fact that

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3. The alkene C6H10 producing OHC(CH2)4CHO on ozonolysis is:

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4. The final step for the extraction of copper from copper pyrite in Bessemer converter involves the reaction-

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5. Consider the following diazonium ions :



The order of reactivity towards diazo-coupling with phenol in the presence of dil. NaOH is -

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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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