English

State the Composition and Two Uses of Given Alloy : Brass - Chemistry

Advertisements
Advertisements

Question

State the composition and two uses of given alloy:  

Brass   

Short Note

Solution

 Brass :It is an alloy of 40% to 20% zinc and 60% to 80% copper.
Uses of brass :

  • It is used for making tap and electric switches,
  • It is used for making household utensils.
shaalaa.com
  Is there an error in this question or solution?
Chapter 6: Metals and Non-metals - Additional questions 2

APPEARS IN

Selina Concise Chemistry [English] Class 7 ICSE
Chapter 6 Metals and Non-metals
Additional questions 2 | Q 9.3

RELATED QUESTIONS

Name the non-metal which is used to make electrodes of dry cells.


"Is malleable and ductile". This best describes:
(a) a metal
(b) a compound
(c) a non-metal
(d) a solution


The electronic configurations of three elements A, B and C are as follows:

A 2, 8, 1
B 2, 8, 7
C 2, 4

(a) Which of these element is a metal?
(b) Which of these elements are non-metals?
(c) Which two elements will combine to form an ionic bond?
(d) Which two elements will combine to form a covalent bond?
(e) Which element will form an anion of valency 1?


Statements given below are incorrect. Write the correct statements : 

Soda water is prepared by dissolving washing soda in water.  


Name a non-metal whose compounds help in the growth of plants.  


What is an amalgam? How does an amalgam different from an alloy?  


Define metal and non-metal on the basis of electron loss or gain.


Name:

a metal which can be cut with a knife.


`Na _____ → Na^+`


Name two metals which react with cold water.


Name:

a metal whose oxide is reduced only by carbon


Explain how the activity series accounts for each of the following:

reaction with acids


Give the balanced reactions for the following:

Iron reacts with dilute HCI


Fill in the Blank and Rewrite the Statements:

Elements showing properties of both metals and nonmetals are known as _________.


Name the following: 
An Alloy of copper and Zinc.


Complete the statement given below, by filling in the blank with the correct word:

A non-metal added to swimming pools to kill germs_____.


State whether the statement given below is true or false. If false write the correct statement.

The chemical name of rust is iron [III] oxide.


Write the name.

Nonmetal which is a good conductors of electricity.


Non-metals form covalent chlorides because ____________.


Reason out

Mercury is the only metal that is liquid at room temperature.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×
Our website is made possible by ad-free subscriptions or displaying online advertisements to our visitors.
If you don't like ads you can support us by buying an ad-free subscription or please consider supporting us by disabling your ad blocker. Thank you.