MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Prevention of Corrosion

Thermite proc...

Question

Thermite process is used in the reduction of _________ .
1. $C r_{2} O_{3}$
2. $C r_{3} O_{7}$
Select the correct option.

Open in App

Solution

1. $C r_{2} O_{3}$
The thermite process is very useful for the welding of broken metal parts. When Aluminimum powder reacts with iron oxide or chromium oxide, a large amount of heat is released and about a temperature of $3500^{o} C$ is attained which is enough to weld broken metallic parts.

Suggest Corrections

thumbs-up

0

Similar questions

Q. (a) Thermite welding process exploits the difference in reactivity of different metals.
(b) Zinc spelter is used as cathode in electrolyte refining process of zinc.
(c) Iron is generally refined by electrolytic reduction process
(d) Iron is alloyed with other metals and carbon, only to prevent corrosion.
Which of the following options regarding the above statements is correct?

Q. Match Column 1 with Column 2:

Column 1	Column 2
A. Mond's process	$1. C r_{2} O_{3} + 2 A l △ - \to 2 C r + A l_{2} O_{3}$
B. van Arkel process	$2. T i C l_{4} + 2 M g △ - \to T i + 2 M g C l_{2}$
C. Thermite process	$3. N i (C O)_{4} △ - \to N i + 4 C O$
D. Kroll's process	$4. Z r I_{4} △ - \to Z r + 2 I_{2}$

Q. Alumina thermite process involves reduction of chromium(II) oxide with ..................... .

Q. Assertion: Aluminium is used as a reducing agent in the extraction of chromium from its oxide,

C r_{2} O_{3}

.
Reason: Reduction by Aluminium is known as Gold Schmidt thermite process or Aluminothermic process.

Q. Identify the correct equations representing thermite reduction.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Prevention of corrosion_video tackle

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Prevention of Corrosion

Standard VII Chemistry

Join BYJU'S Learning Program

CrossIcon