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Analytical & Nuclear Chemistry


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20 Questions MCQ Test GATE Chemistry Mock Test Series | Analytical & Nuclear Chemistry

Analytical & Nuclear Chemistry for Chemistry 2022 is part of GATE Chemistry Mock Test Series preparation. The Analytical & Nuclear Chemistry questions and answers have been prepared according to the Chemistry exam syllabus.The Analytical & Nuclear Chemistry MCQs are made for Chemistry 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Analytical & Nuclear Chemistry below.
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*Answer can only contain numeric values
Analytical & Nuclear Chemistry - Question 1

The distribution coefficient of an organic compound A for benzene and water is 10. The amount of A extracted if 1.0 gm of it dissolved in 100 mL of water is equilibrated in a separatory funnel with 100 mL of benzene is ______ gm. (Round off to two one decimal place)


Detailed Solution for Analytical & Nuclear Chemistry - Question 1

Suppose amount of A extracted with 100 mL of benzene = xg. The amount of A left in 100 mL water = 1–xg

The amount of A extracted with 100 mL of benzene is 0.909 gm.

*Answer can only contain numeric values
Analytical & Nuclear Chemistry - Question 2

Substances X and Y were found to have a retention time of 18.30 and 29.92 minutes respectively on a 20 cm long column. The widths (at the base) for A and B were 1.50 and 1.60 minutes respectively. The column resolution is ____. (Round off to two decimal places).


Detailed Solution for Analytical & Nuclear Chemistry - Question 2

Analytical & Nuclear Chemistry - Question 3

In differential thermal analysis (DTA) the correct representation of ΔT (temperature) difference between sample and thermally inert reference are continuously recorded as a function of temperature or time. 

Detailed Solution for Analytical & Nuclear Chemistry - Question 3

Analytical & Nuclear Chemistry - Question 4

The correct form of half wave potential in a typical polarogram.

Detailed Solution for Analytical & Nuclear Chemistry - Question 4


Analytical & Nuclear Chemistry - Question 5

The major limitations of quinhydrone electrode are

Detailed Solution for Analytical & Nuclear Chemistry - Question 5

All are correct. In alkaline solution (above pH 9) the weakly acidic  is neutralised and is subject to oxidation by air and dissolved oxygen.

Analytical & Nuclear Chemistry - Question 6

Which of the following metals can be used as indicator electrodes in potentiometric methods

Detailed Solution for Analytical & Nuclear Chemistry - Question 6

Metals that undergo reversible oxidation

Analytical & Nuclear Chemistry - Question 7

Which of the following statements are correct for a successful mass spectroscopic analysis
1. Each component must exhibit atleast one peak that differs makedly from the others
2. The contribution of each component to a peak must be linearly additive
3. The sensitivity must be reproducible to 1% relative
4. Suitable standards must be available for calibration

Detailed Solution for Analytical & Nuclear Chemistry - Question 7

All are correct, sensitivity is defined as ion current per unit partial pressure.

Analytical & Nuclear Chemistry - Question 8

U235 nucleus splits into two new nuclei whose mass numbers are in the ratio of 2 : 1. The ratio of the radii of the new nuclei is

Detailed Solution for Analytical & Nuclear Chemistry - Question 8

The ratio of radii of two nuclei:

Analytical & Nuclear Chemistry - Question 9

Half life of Na24 radionuclide is 15h the time in which the activity of a sample of  Na24 radionuclide will decrease by 87.5% is

Detailed Solution for Analytical & Nuclear Chemistry - Question 9

Let the initial activity of sample is 100 u. Then from question the final activity should be 100 – 87.5 = 12.5 u

Analytical & Nuclear Chemistry - Question 10

The number of α and β particles are emitted out in the transition 92U238 to 82Pb206 are

Detailed Solution for Analytical & Nuclear Chemistry - Question 10

*Answer can only contain numeric values
Analytical & Nuclear Chemistry - Question 11

Y90 has a half-life of 64h and Sr90 28 year. Sr90 by β-emission the amount of Y90 in equilibrium with 1 gm of Sr90 is ___  x 10-4 gm. (Round off to two decimal places)


Detailed Solution for Analytical & Nuclear Chemistry - Question 11

For radio active equilibrium

Analytical & Nuclear Chemistry - Question 12

A cell voltage measured using an SCE reference electrode is –0.774 V. (The indicates electrode is more negative half cell). The cell voltage with a Ag/AgCl reference electrode (1 MKCl : E = 0.228 V) or with NHE are

Detailed Solution for Analytical & Nuclear Chemistry - Question 12

The potential of Ag/AgCl electrode is more negative than that of the SCE by 0.242 – 0.228 = 0.014 V Hence the cell voltage using the former electrode is less negative by this amount

Analytical & Nuclear Chemistry - Question 13

Which of the following forms of analytical chemistry seeks to obtain the condition of full polarization

Detailed Solution for Analytical & Nuclear Chemistry - Question 13

Voltametry
Correct options is (b).

Analytical & Nuclear Chemistry - Question 14

Compared to AAS, AES has the advantage of providing

Detailed Solution for Analytical & Nuclear Chemistry - Question 14

Because of the excitation source is general, all atoms are atomized, excited, and product atomic emission.

Analytical & Nuclear Chemistry - Question 15

Which statement is FALSE about light source

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Analytical & Nuclear Chemistry - Question 16

1.0 gram of a sample of  H2O2 solution containing y% H2O2 by weight requires y mL of KMnO4 solution for complete titration under acidic condition. The molarity of KMnOsolution is

Detailed Solution for Analytical & Nuclear Chemistry - Question 16


Analytical & Nuclear Chemistry - Question 17

Which type of chromatography process requires that when materials that cannot be readily dissolved in a solvent for chromatography need to be heated or pyrolyzed to a high temperature is

Detailed Solution for Analytical & Nuclear Chemistry - Question 17

Gas chromatography
Correct option is (b).

Analytical & Nuclear Chemistry - Question 18

Differential scanning calorimetry (DSC) is a technique useful in determining

Detailed Solution for Analytical & Nuclear Chemistry - Question 18

glass transition temperatures

Analytical & Nuclear Chemistry - Question 19

The best procedure to improve resolution between two chromatographic peak is

Detailed Solution for Analytical & Nuclear Chemistry - Question 19

decreasing column length, decreasing band-width
Correct option is (d).

Analytical & Nuclear Chemistry - Question 20

In paper chromatographic separation of silver, lead and Hg the solvent front was 18 cm while front due these elements were respectively 16, 12 and 6 cm. What is the Rf value of all metals.

Detailed Solution for Analytical & Nuclear Chemistry - Question 20


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