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Chemistry - Corrosion, Spectroscopy and Inorganic Applications

Comprehensive chemistry quiz covering corrosion mechanisms, spectroscopy techniques, electromagnetic radiation, and inorganic chemistry applications. Suitable for GATE, CSIR-NET, SLET, and IITJEE exam preparation.

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

According to the galvanic series, which of the following substances will corrode at the fastest rate?

  1. Stainless steel 316
  2. Yellow brass
  3. Monel 400
  4. Titanium
  5. Naval brass 464
Question 2 Multiple Choice (Single Answer)

Which of the following are corrosion protection techniques involving metallic coating?

  1. Electroplating
  2. Galvanising
  3. Anodising
  4. Metal spraying
  1. Only 1 and 2
  2. Only 1, 2 and 3
  3. Only 1, 2 and 4
  4. Only 2, 3 and 4
  5. Only 3 and 4
Question 3 Multiple Choice (Single Answer)

Which of the following statements is/are true about corrosion?
1. In an electrochemical corrosion, corrosion occurs at anode, but rust is deposited at the cathode.
2. Dry corrosion is slow process while wet corrosion is a fast process.
3. In an electrochemical corrosion, corrosion does not depend on the size of the anodic part of the metal.
4. Dry corrosion involves direct attack of the chemicals on the metal surface.

  1. Only 1, 2 and 3
  2. Only 2, 3 and 4
  3. Only 1, 3 and 4
  4. Only 1, 2 and 4
  5. All of these
Question 4 Multiple Choice (Single Answer)

Which of the following forms of corrosion occurs due to the concentration difference of two regions of same metal component?

  1. Pitting corrosion
  2. Stress corrosion
  3. Uniform corrosion
  4. Galvanic corrosion
  5. Crevice corrosion
Question 5 Multiple Choice (Single Answer)

TMS is the most suitable reference compound for NMR spectroscopy. However, it cannot be used with deuterium oxide solvent because:
1. it is highly volatile
2. it is chemically inert
3. it is magnetically isotropic
4. it is insoluble in deuterium oxide

  1. Only 1
  2. Only 2
  3. Only 2 and 3
  4. Only 3 and 4
  5. Only 4
Question 6 Multiple Choice (Single Answer)

Which of the following statements is/are correct?
1. Metal cladding is a process of sandwiching a metal between two corrosion resistant metals.
2. In galvanising, zinc protects iron sacrificially.
3. Thinner reduces viscosity of paint and increases it elasticity.
4. Anodic coating is done by a metal, which is situated after the base metal in the electrochemical series.

  1. Only 1 and 2
  2. Only 1, 2 and 3
  3. Only 3 and 4
  4. Only 2, 3 and 4
  5. Only 1, 2 and 4
Question 7 Multiple Choice (Single Answer)

In which of the following bonds the strongest absorption in the IR spectra will be observed?

  1. B-H
  2. C-H bond
  3. N-H bond
  4. O-H bond
  5. S-H bond
Question 8 Multiple Choice (Single Answer)

Which of the following statements is/ are true?

  1. Microwave radiation has shorter wavelength than IR radiation.
  2. IR radiation has higher wave number than UV radiation.
  3. UV radiation is more energetic than visible light.
  4. Gamma rays have higher frequency than X rays.
  1. Only 2 and 4
  2. Only 1 and 4
  3. Only 1 and 2
  4. Only 2 and 3
  5. Only 3 and 4
Question 9 Multiple Choice (Single Answer)

Which of the following mentioned methods are used for disinfection of potable water?
I. Break point chlorination
II. Hot soda-lime process
III. Ozonisation
IV. Foaming
V. Chloramine treatment

  1. Only I, IV and V
  2. Only I, II and V
  3. Only II, III and IV
  4. Only I, III and V
  5. Only II, III and V
Question 10 Multiple Choice (Single Answer)

Which of the following do not contain sulphur?

  1. Cinnabar
  2. Gypsum
  3. Lithopone
  4. Talc
  1. Only 1 and 4
  2. Only 2 and 3
  3. Only 2, 3 and 4
  4. Only 2 and 4
  5. Only 3 and 4
Question 11 Multiple Choice (Single Answer)

Which of the following statements are not false?

  1. The protecting power of lyophilic colloidal sol is expressed in terms of gold number.
  2. Rate of physical adsorption increase with decrease in temperature.
  3. In Freundlich Adsorption isotherm, the value of 1/n is 0 in case of physical adsorption and 1 in case of chemisorptions.
  4. In Langmuir's model of adsorption of a gas on a solid surface the mass of gas striking a given area of surface is independent of the pressure of the gas.
  1. Only 1 and 2
  2. Only 1, 2 and 3
  3. Only 1 and 4
  4. Only 2 and 3
  5. Only 3 and 4
Question 12 Multiple Choice (Single Answer)

Match column A and column

Column A 
        </strong>|<strong>Column B</strong>|

|a. Bathochromic shift|i. The shifting of absorption to lower frequency.|
|b. Hypsochromic shift|ii. Increase in absorbance|
|c. Hypochromic shift|iii. Decrease in absorbance|
|d. Hyperchromic shift|iv. Blue shift|

  1. a-i, b-iv, c-ii, d-iii
  2. a-i, b-iv, c-iii, d-ii
  3. a-iv, b-i, c-ii, d-iii
  4. a-iii, b-ii, c-i, d-iv
  5. a-ii, b-iii, c-iv, d-i
Question 13 Multiple Choice (Single Answer)

Which of the following is/are examples of iron-sulphur proteins?

  1. Rubredoxin
  2. Methane monooxygenase
  3. Rieske proteins
  4. Aconitase
  1. Only 1 and 2
  2. Only 1, 2 and 3
  3. Only 1, 3 and 4
  4. Only 2 and 3
  5. Only 2, 3 and 4
Question 14 Multiple Choice (Single Answer)

Match entries in column I (elements) and Column II (their medical uses)
Column I 
        </strong>|<strong>Column II</strong>|

|P. Selenium|1. Anti-dandruff|
|Q. Magnesium|2. Antacid|
|R. Antimony|3. Antileishmaniasis|
|S. Tin|4. Anti-caries|

  1. P-1, Q-2, R-3, S-4
  2. P-1, Q-3, R-2, S-4
  3. P-2, Q-1, R-4, S-3
  4. P-2, Q-3, R-1, S-4
  5. P-4, Q-3, R-2, S-1
Question 15 Multiple Choice (Single Answer)

Match entries in column I (elements) and Column II (used in the treatment of
Column I 
        </strong>|<strong>Column II</strong>|

|P. Li|1. Gastritis|
|Q. Pt|2. Rheumatoid arthritis|
|R. Au|3. Bipolar disorder|
|S. Bi|4. Cancer|

  1. P-4, Q-2, R-1, S-3
  2. P-3, Q-4, R-2, S-1
  3. P-2, Q-3, R-4, S-1
  4. P-1, Q-4, R-2, S-3
  5. P-1, Q-3, R-2, S-4
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