Tag: physical properties of non-metals

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Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

Iron is used in construction of bridges and houses.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

There are many different types of steels available today. Each type is made with iron combined with different elements including carbon, silicon, and nickel among others. Steel is an important component in every structure, in every type of construction. Therefore Buildings, bridges, skyscrapers, and other types of construction would not be complete if it does not include iron in its framework. 

Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

A fire work gave bright crimson light. It probably contained a salt of ____________.

  1. Ca

  2. Sr

  3. Ba

  4. Mg
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Strontium element gives crimson red flame and it may be the salt of strontium carbonate which is used in the manufacture of red fireworks and pure strontium is used in the study of neurotransmitter release in neurons.

Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

Which of the following metal is found in our body?

  1. Iron

  2. Calcium

  3. Potassium

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All the above metals are found in body and are required for normal functioning of our body. Iron is found in haemoglobin and myoglobin which are required for oxygen transport in the body. Calcium is found in the structure of bone and teeth. Also plays a role in the growth of nerve cells.

Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

________ is called a space age metal and used in military jets and spacecrafts.

  1. Zinc

  2. Platinum

  3. Copper

  4. Titanium
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

TItanium is known as the space age metal and  is expected to replace most of the metals used around the industries. However, its expensive and difficult mining process is keeping it from being used so commonly as aluminium or steel. Titanium is found to be stronger, durable and corrosion resistive in comparison to steel. It has the highest strength to weight ratio of all the metals. All these properties, along with its light weight, make it an ideal metal for space crafts and military jets. It is also used in making highly water - resistant diving watches.

Multiple choice chemistry metals chemical properties and uses of metals and non-metals introduction to metals physical properties of non-metals

Which of the following non-metal is commonly used for purifying water?

  1. Sulphur

  2. Oxygen

  3. Chlorine

  4. Xenon
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlorine is one of the most commonly used disinfectants for water disinfection. Chlorine can be applied for the deactivation of most microorganisms and it is relatively cheap. Although several methods eliminate disease-causing microorganisms in water, chlorination is the most commonly used. Chlorination is effective against many pathogenic bacteria, but at normal dosage rates it does not kill all viruses, cysts, or worms. When combined with filtration, chlorination is an excellent way to disinfect drinking water supplies.