English

Fill in the blank. A non-metal used to purify water is ______. - Chemistry

Advertisements
Advertisements

Question

Fill in the blank.

A non-metal used to purify water is ______.

Fill in the Blanks

Solution

A non-metal used to purify water is Charcoal.

shaalaa.com
  Is there an error in this question or solution?
Chapter 6: Metals and Non-metals - Objective type questions

APPEARS IN

Selina Concise Chemistry [English] Class 7 ICSE
Chapter 6 Metals and Non-metals
Objective type questions | Q 1.6

RELATED QUESTIONS

Classify the following elements into metals, non–metals and metalloids: C, Mg, Si, S, Hg, As.


Give an example of a metal which can be easily cut with a knife.


Match the substances given in Column A with their uses given in Column B.

  A   B
1 Gold a Thermometers
2 Iron b Electric wire
3 Aluminium c Wrapping food
4 Carbon d Jewellery
5 Copper e Machinery
6 Mercury f Fuel

Name one property which is characteristic of  metals.


Metals are said to be shiny. Why do metals generally appear to be dull? How can their brightness be restored?


Which of the following non-metal is a liquid?
(a) carbon
(b) sulphur
(c) bromine
(d) iodine


(a) Give the names and formulae of one metal chloride and one non-metal chloride.
(b) State an important property in which these metal chloride and non-metal chloride differ.
(c) Why do they differ in this property?


Tick (√) the most appropriate answer. 

A metal which is a poor conductor of electricity is:


State two important uses of following non-metal

iodine


State two important uses of following non-metal 

Uses of graphite  


What is an alloy? 


`Na _____ → Na^+`


Select from the following ist:

`Fe_2O_3, , NO, PbO, Mn_2O_7`

Basic oxide………..


Name:

the most abundant metal and the most abundant non=metal


Explain the term  Gangue .


Name the following:
or

With reference to the physical properties of metals and non-metals, state the following exception.

A metal which is liquid at room temperature.


Distinguish between the physical properties of metals and non-metals with reference to:

(a) lusture (b) malleability (c) ductility (d) tensile strength (e) sonority (f) conduction of heat and electricity (g) melting and boiling point (h) density.


With reference to the physical properties of metals and non-metals, state the following exception.

a non-metal which sublimes and is non-lustrous


Paheli bought a statue made up of copper. To her surprise, it acquired a dull green coating after a couple of months. Explain the reason.


Reason out

Sulphur is used in the vulcanization of rubber.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×