English

Fill in the Blank : the Most Ductile Metal Is .................... - Chemistry

Advertisements
Advertisements

Question

Give two uses of Germanium  

Short/Brief Note
Advertisements

Solution

  • Germanium is used as a semiconductor.
  • It is used as a transistor in many electronic applications when mixed with arsenic, gallium, antiomony, etc.
  • Germanium is also used to form alloys and as a phosphor in fluorescent lamps
shaalaa.com
  Is there an error in this question or solution?
Chapter 6: Metals and Non-metals - Exercise

APPEARS IN

Selina Concise Chemistry [English] Class 7 ICSE
Chapter 6 Metals and Non-metals
Exercise | Q 8.4

RELATED QUESTIONS

Give reasons for the following.

Sodium and potassium are stored in kerosene.


What happens when Iron nails are placed in copper sulphate solution?

Write word equations of the reactions involved.


What elements are present in steel? How are the properties of steel different from those of pure iron?


Fill in the blank 

_______ is a soft metal. 


Statements given below are incorrect. Write the correct statements : 

Aluminium is best conductor of electricity.   


Write ‘True’ or ‘False’ in front of following statement. 

Magnesium is used in making light weight alloys of aluminium. 


State the position of the following in the periodic table:

Alkali metals


State the position of the following in the periodic table:

Alkaline earth metals


State the position of the following in the periodic table:

Iron and zinc


Give the general characteristics of:

Alkaline earth metals with reference to

(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid


What was Mendeleev's basis for the classification of elements?


What is it made from? Why?

Ornaments


With reference to the following metals state their use in daily life metal:

Lead


State a specific reason for using copper in electrical cables


Which one of the following metals do not react with cold as well as hot water?


Give an example of a metal which

  1. is liquid at room temperature.
  2. is the best conductor of heat.

Compare the conductivity of metals and non–metals.


The metals which are found in both free state as well as combined state are ______.


X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:

______ is the reducing agent.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×