Which substance is commonly used to manufacture dyes and detergents?
Diagram shows the stages in Contact Process.
Name the substances P and Q.
The manufacturing of sulphuric acid involves several reactions. Which of the following equations represents the sulphuric acid reaction that use a catalyst?
Which gas is the main agent of pollution which causes acidic rain?
Acid rain causes the land to be acidic. Farmers neutralize the acidity in the soil by adding................
Which of the following is the main usage of the product in Haber Process?
The chemical equation shows the reaction which occurs in Haber Process.
N2 + 3H2 --> NH3
Which of the following represents catalyst, temperature and presure in the process?
Pure metals are ductile and malleable. this is because...........
Diagram below shows the atomic arrangement in an alloy.
this alloy is harder than its pure metal because..........
diagram shows the arrangement of atoms in alloy X.
What is the name of alloy X?
The body of the car shown in diagram below is made of alloy W.
What is alloy W?
In order to produce a glass that more resistant to heat and chemicals, substance X is added to soda lime glass in the manufacturing process.
What is X?
which of the following substances is found in a photochromic glass?
kaolin is used to made porcelain. A substance is added to kaolin to harden it.
What is the substance?
Which of the following describe the characteristics of ceramics?
III High melting point
IV Good electrical insulator
Why is ceramic used for the wall of a nuclear reactor?
Which substance is a composite material?
Digital communication plays a very important role in modern living. Effective transmission of data, voice and images in a digital format requires a suitable material.
What is the material?
What is the main purpose of using superconductors?
Diagram shows the layout of water pipe system in a house.
What are the best materials that can be used as pipes for the above purposes?
Polymer, glass, alloy and composite material are some examples of manufactured substance in industry.
Which statement is correct about these substances?
Plaster of Paris which is used to make plaster casts for supporting broken bones is made up of ...................
Diagram shows the lead crystal glass.
What are the major components used in the making of lead crystal glass?
Ammonium sulphate is used as a chemical fertilizer. This fertilizer can be prepared in the laboratory through the reaction between ............
A student was dazzled by the sunlight while doing her revision as shown in diagram.
She want to change the window glass to solve this problem. The new window glass should contain substance M.
What is substance M?