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Corrosion



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Q1. The drawback of this battery is the working voltage of battery is _________ due to the internal losses.

(a) Higher
(b) Lower
(c) Moderate
(d) Not considerable

Q2. In zinc-air cells are composed of three parts of zinc used as ___________

(a) Anode
(b) Cathode
(c) Based on the half cell
(d) Can?t be said

Q3. The advantages of the nickel metal hydrated batteries are having _________ more energy than the nickel cadmium batteries.

(a) 100%
(b) 50%
(c) 75%
(d) 25%

Q4. Nickel metal hydrated batteries having the low cell voltage of __________

(a) 1V
(b) 1.2V
(c) 1.3V
(d) 1.4V

Q5. The amount of iron wasted by corrosion each year is estimated about _________ of its annual production.

(a) 1
(b) 1/2
(c) 1/4
(d) 1/8

Q6. Which of the following is not lost during corrosion?

(a) Malleability
(b) Ductility
(c) Conductivity
(d) Colour

Q7. The corrosion is the reverse process of ____________

(a) Metal extraction
(b) Metal production
(c) Metal heating
(d) Metal moulding

Q8. Iron undergoes corrosion to produce __________ coloured hydrated ferric oxide.

(a) Red
(b) Brown
(c) Green
(d) Blue

Q9. The metals except ________ exist in nature in the form of their minerals or ores.

(a) Gold
(b) Silver
(c) Copper
(d) Iron

Q10. In corrosion, as a result of decay, the metals are not converted into __________

(a) Oxides
(b) Hydroxides
(c) Carbonates
(d) Peroxides


0 votes
0 Answer
818 views

Assertion : 1.231 Has Three Significant Figures. Reason : All Numbers Right To The Decimal Point Are Significant

Modified 242 Year Ago

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242 Year Ago

Assertion : 1.231 Has Three Significant Figures. Reason : All Numbers Right To The Decimal Point Are Significant

0 votes
0 Answer
803 views

Assertion : Gases Combine In Simple Ratio Of Their Volume But, Not Always. Reason : Gases Deviate From Ideal Behaviour.

Modified 242 Year Ago

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803
242 Year Ago

Assertion : Gases Combine In Simple Ratio Of Their Volume But, Not Always. Reason : Gases Deviate From Ideal Behaviour.

0 votes
0 Answer
751 views

A Sample Of Phosphorus Trichloride (PCL3) Contains 1.4 Moles Of The Substance. How Many Atoms Are There In Atoms Sample

Modified 243 Year Ago Sangeeta

751
Sangeeta
243 Year Ago

A Sample Of Phosphorus Trichloride (PCL3) Contains 1.4 Moles Of The Substance. How Many Atoms Are There In Atoms Sample

0 votes
0 Answer
632 views

The Significant Figures In 34.00 Are

Modified 242 Year Ago Sangeeta

632
Sangeeta
242 Year Ago

The Significant Figures In 34.00 Are

0 votes
0 Answer
478 views

The Passege Of Current Liberates H2 At Cathode And CL2 At Anode. The Solution Is

Modified 236 Year Ago

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478
236 Year Ago

The Passege Of Current Liberates H2 At Cathode And CL2 At Anode. The Solution Is

0 votes
0 Answer
464 views

Assertion : Atoms Can Neither Be Created Nor Destroyed. Reason : Under Similar Condition Of Temperature And Pressure, Equal Volume Of Gases Does Not Contain Equal Number Of Atoms.

Modified 242 Year Ago

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464
242 Year Ago

Assertion : Atoms Can Neither Be Created Nor Destroyed. Reason : Under Similar Condition Of Temperature And Pressure, Equal Volume Of Gases Does Not Contain Equal Number Of Atoms.

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