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Assertion: N2 is less reactive than P4.
Reason: Nitrogen has more electron gain enthalpy than phosphorus.
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Salvarsan is arsenic-containing drug which was first used for the treatment of ______.
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In \[\ce{PCl5}\], phosphorus is in sp3d hybridised state but all its five bonds are not equivalent. Justify your answer with reason.
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Arrange the following in the increasing order of their property indicated:
Benzoic acid, Phenol, Picric acid, Salicylic acid (pka values).
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Account for the following:
Zinc is a comparatively a soft metal, iron and chromium are typically hard.
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For the reaction, \[\ce{A +2B → AB2}\], the order w.r.t. reactant A is 2 and w.r.t. reactant B. What will be change in rate of reaction if the concentration of A is doubled and B is halved?
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The number of ions formed on dissolving one molecule of FeSO4.(NH4)2SO4.6H2O in water is ______.
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Identify the order of reaction from the following unit for its rate constant:
L mol–1 s–1
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The conversion of molecules A to B follow second order kinetics. If concentration of A is increased to three times, how will it affect the rate of formation of B?
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Which acid of the following pair would you expect to be stronger?
F−CH2−COOH or CH3−COOH
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Read the following passage and answer the questions that follow:
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The rate of reaction is concerned with decrease in the concentration of reactants or increase in the concentration of products per unit of time. It can be expressed as instantaneous rate at a particular instant of time and average rate over a large interval of time. A number of factors such as temperature, concentration of reactants, catalyst affect the rate of reaction. Mathematical representation of rate of a reaction is given by rate law: Rate = k[A]x [B]y x and y indicate how sensitive the rate is to change in concentration of A and B. Sum of x + y gives the overall order of a reaction. |
- What is the effect of temperature on the rate constant of a reason? [1]
- For a reaction \[\ce{A + B → Product}\], the rate law is given by, Rate = k[A]2 [B]1/2. What is the order of the reaction? [1]
- How order and molecularity are different for complex reactions? [1]
- A first-order reaction has a rate constant 2 × 10–3 s–1. How long will 6 g of this reactant take to reduce to 2 g? [2]
OR
The half-life for radioactive decay of 14C is 6930 years. An archaeological artifact containing wood had only 75% of the 14C found in a living tree. Find the age of the sample.
[log 4 = 0.6021, log 3 = 0.4771, log 2 = 0.3010, log 10 = 1] [2]
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Assertion (A): Order of reaction is applicable to elementary as well as complex reactions.
Reason (R): For a complex reaction, molecularity has no meaning.
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Which of the following statement is true?
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Write the structures of the following organic halogen compound.
1,4-Dibromobut-2-ene
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Write the structures of the following organic halogen compound.
4-tert-Butyl-3-iodoheptane
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Write structure of the following compound:
4-tert. Butyl-3-iodoheptane
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Name the following halide according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:
\[\ce{CH3CH2C(CH3)2CH2l}\]
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Write the structure of the following organic halogen compound.
1,4-Dibromobut-2-ene
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Give the IUPAC names of the following compound:
(CCl3)3CCl
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Write the structures of the following organic halogen compound.
1,4-Dibromobut-2-ene
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