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Cause and Modes of chemi..



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Q1. . Anhydrous inorganic liquid metal surface in absence of moisture undergoes ___________

(a) Wet corrosion
(b) Dry corrosion
(c) Galvanic corrosion
(d) Pitting corrosion

Q2. . Dry corrosion is also called as _________

(a) Chemical corrosion
(b) Electrochemical corrosion
(c) Wet corrosion
(d) Oxidation corrosion

Q3. Leakage of inflammable gas from a corroded pipe can cause ___________

(a) Acidity
(b) Alkalinity
(c) Turbidity
(d) Fire hazards

Q4. Select the incorrect statement from the following option.

(a) Replacement of corroded equipment is time-consuming
(b) Corrosion causes contamination of product
(c) Corrosion increases the electrical conductivity of metals
(d) Corrosion causes leakage of toxic liquid or gases

Q5. Due to corrosion, useful properties of metals such as malleability, ductility and electrical conductivity are lost.

(a) True
(b) False
(c)
(d)

Q6. Which of the following is the most stable state of metal?

(a) Ore of metal
(b) Pure metal
(c) Corroded metal
(d) Metal ion

Q7. Metals does not exist in nature in the form of ___________

(a) Nitrates
(b) Sulphates
(c) Carbonates
(d) Oxides

Q8. How many rust will be formed when 100kg of iron have completely rusted away?

(a) 100 kg
(b) 190 kg
(c) 250 kg
(d) 320 kg

Q9. Which of the following is an example of corrosion?

(a) Rusting of iron
(b) Tarnishing of silver
(c) Liquefaction of ammonia
(d) Rusting of iron and tarnishing of silver

Q10. The process of deterioration of a metal due to unwanted chemical or electrochemical interaction of the metal with its environment is called ___________

(a) Electrolysis
(b) Electrodialysis
(c) Corrosion
(d) Deposition


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Two Element Have Electronegativity Of 1.2 And 3.0. Bond Formed Between Them Would Be

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Two Element Have Electronegativity Of 1.2 And 3.0. Bond Formed Between Them Would Be

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The Molecular Formula Of Chloride Of A Metal M Is MCL3. The Formula Of Its Carbonate Would Be

Modified 245 Year Ago

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The Molecular Formula Of Chloride Of A Metal M Is MCL3. The Formula Of Its Carbonate Would Be

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Chemical Formula For Calcium Pyrophosphate Is Ca2P2O7. The Formula For Ferric Pyrophosphate Will Be

Modified 245 Year Ago

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245 Year Ago

Chemical Formula For Calcium Pyrophosphate Is Ca2P2O7. The Formula For Ferric Pyrophosphate Will Be

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439 views

RbO2 Is

Modified 16 Year Ago

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RbO2 Is

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Formula Of A Metallic Oxide Is MO. The Formula Of Its Phosphate Will Be

Modified 245 Year Ago

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245 Year Ago

Formula Of A Metallic Oxide Is MO. The Formula Of Its Phosphate Will Be

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0 Answer
393 views

Magnesium Reacts With An Element (X) To Form An Ionic Compound. If The Ground State Electronic Configuration Of (X) Is 1s2 2s2 2p3, The Simplest Formula For This Compound Is

Modified 245 Year Ago

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245 Year Ago

Magnesium Reacts With An Element (X) To Form An Ionic Compound. If The Ground State Electronic Configuration Of (X) Is 1s2 2s2 2p3, The Simplest Formula For This Compound Is

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