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Test: Equivalence concept, Redox titrations - JEE MCQ


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15 Questions MCQ Test Chemistry for JEE Main & Advanced - Test: Equivalence concept, Redox titrations

Test: Equivalence concept, Redox titrations for JEE 2024 is part of Chemistry for JEE Main & Advanced preparation. The Test: Equivalence concept, Redox titrations questions and answers have been prepared according to the JEE exam syllabus.The Test: Equivalence concept, Redox titrations MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Equivalence concept, Redox titrations below.
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Test: Equivalence concept, Redox titrations - Question 1

The mass of produced when excess of is bubbled through a solution of is

Detailed Solution for Test: Equivalence concept, Redox titrations - Question 1

Atomic wt. of
No. of mole
1 mole of gives 1 mole of
205 mole of will give 205 mole of
wt. of mole of will be
Test: Equivalence concept, Redox titrations - Question 2

The ratio of amounts of needed to precipitate all the metal ions from of and of will be

Detailed Solution for Test: Equivalence concept, Redox titrations - Question 2

mole mole
millimole millimole required

1 mole mole millimole
100 milimole milimole required
Ratio
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Test: Equivalence concept, Redox titrations - Question 3

0.45 g of acid (molecular weight 90) is neutralised by 20ml of 0.5 N caustic potash. The basicity of acid is

Detailed Solution for Test: Equivalence concept, Redox titrations - Question 3

Eq. of acid = Eq of base,
E.
Basicity

Test: Equivalence concept, Redox titrations - Question 4

platinic chloride of a mono- acidic base on ignition gives platinum. The molecular weight of the base is molecular weight of

Detailed Solution for Test: Equivalence concept, Redox titrations - Question 4

Apply the formula : M.wt

Test: Equivalence concept, Redox titrations - Question 5

Given :
The values of and in the above redox reaction are respectively :

Detailed Solution for Test: Equivalence concept, Redox titrations - Question 5

On balancing the given reaction, we find

Test: Equivalence concept, Redox titrations - Question 6

The number of electrons involved in the reduction of one nitrate ion to hydrazine is

Detailed Solution for Test: Equivalence concept, Redox titrations - Question 6


So, for reduction of 1 mole of number of electrons required is 7 .

Test: Equivalence concept, Redox titrations - Question 7
The concentration of oxalic acid is ' ' . of this solution reacts with of acidified . What is the of ' ' oxalic acid solution ? (Assume that oxalic acid dissociates completely)
Detailed Solution for Test: Equivalence concept, Redox titrations - Question 7
Oxalic acid
Oxalic acid




Now convert molarity into normality
eq. wt. mol. wt. of oxalic acid


This normality represents the hydrogen ion concentration.
So,
Test: Equivalence concept, Redox titrations - Question 8
In the reaction
Detailed Solution for Test: Equivalence concept, Redox titrations - Question 8
In the given reaction, oxidation state of is changing from 0 to , while in nitrogen it is changing from 0 to . So oxidation of and reduction of nitrogen takes place.
Test: Equivalence concept, Redox titrations - Question 9
Which of the following involves transfer of five electrons ?
Detailed Solution for Test: Equivalence concept, Redox titrations - Question 9
O.N. of in is and in it is The difference is of 5 electrons
Test: Equivalence concept, Redox titrations - Question 10
The colour of phenolphthalein in acid and base ranges of the indicator respectively, are
Detailed Solution for Test: Equivalence concept, Redox titrations - Question 10
Phenolphthalein is colourless in acid range and pink in base range of the indicator.
Test: Equivalence concept, Redox titrations - Question 11
Which of the following indicators can be used to detect end point in the titration of a weak acid versus strong base?
Detailed Solution for Test: Equivalence concept, Redox titrations - Question 11
In the titration of a weak acid (say, acetic acid) versus strong base (say, sodium hydroxide), the at the equivalence point is more that 7 due to hydrolysis of congugate base of the weak acid. The steep rise in around equivalence point encompasses the range 7 to 10 . Thus, thymolphthalein can be used as the indicator to locate end point.
Test: Equivalence concept, Redox titrations - Question 12
The titration of a weak base versus weak acid cannot be carried out by using acid-base indicator because
Detailed Solution for Test: Equivalence concept, Redox titrations - Question 12
During the titration, a buffer solution of weak acid and salt of its cojugate base is formed. Its is given by

From the given date, we find

This gives
After the addition of of solution, we will have
Test: Equivalence concept, Redox titrations - Question 13
Which of the following indicators (buffer range provided in brackets) cannot be used to detect end point of titration between strong acid and strong base?
Detailed Solution for Test: Equivalence concept, Redox titrations - Question 13
Indicator range of trinitrobenzene is beyond the steep portion of near the equivalence point.
Test: Equivalence concept, Redox titrations - Question 14

Find the value of for the following half equation.

Detailed Solution for Test: Equivalence concept, Redox titrations - Question 14

Balanced half equation is

Value of is .

Test: Equivalence concept, Redox titrations - Question 15
The product of oxidation of  with in alkaline medium is:-
Detailed Solution for Test: Equivalence concept, Redox titrations - Question 15
Oxidaiton of with in alkaline solution is given by
Reaction:
Here the oxidation state of reduced from +7 to +6 and the oxidation state of I oxidised from -1 to +5.
is involved in the reaction.
Oxidation product form is .
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