Check sibling questions
Class 10
Solutions to CBSE Sample Paper - Science Class 10

A cable manufacturing unit tested few elements on the basisof their physical properties.

Q 48 - few elements on the basisof their physical properties - Teachoo.jpg

Which of the above elements were dicarded for usage by the company?

(A) W, X, Y

(B) X, Y, Z

(C) W, X, Z

(D) W, X, Z

 

Answer - 

Cable Manufacturing company-01.jpg

Now,

  • Metals can be beaten into thin sheets , this property of metals is called malleability .
  • The ability of metals to be drawn into thin wires is called ductility .



A Cable Manufacturing company makes cables (thin wire). Thus, it needs

  • Elements which are malleable
  • Elements which are ductile
  • Elements which conduct electricity
  • And, elements which have high melting point

 

A cable manufacturing unit will discard elements with  

  • low malleability, 
  • low ductility 
  • low melting point. 
  • And it will also discard elements which don’t conduct electricity

 

From our options

  • W cannot be discarded as it has all desired characteristics
  • X is discarded because it is not malleable
  • Y is discarded because it is not malleable
  • Z is discarded because it does not conduct electricity

 

Hence, from this view elements X, Y, and Z should be discarded.

 

So, the correct answer is (b)  

 

 

CA Maninder Singh's photo - Expert in Practical Accounts, Taxation and Efiling

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo