Tag: metals

Questions Related to metals

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

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

  1. Ca

  2. Sr

  3. Ba

  4. Mg

Show answer
Correct Option: B
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.

Some non-metals are used in water purification.

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

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Given statement is true as chlorine being non-metal used in water purification.

Which of the following metal is found in our body?

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

  1. Iron

  2. Calcium

  3. Potassium

  4. All of the above

Show answer
Correct Option: D
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.

Common salt consists of which non-metal?

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

  1. Iodine

  2. Carbon

  3. Oxygen

  4. Sulphur

Show answer
Correct Option: A
Explanation:

Salt is a food that almost everyone eats throughout the day, and every day. Iodized salt (also spelled iodized salt) is table salt mixed with a minute amount of various salts of the element iodine. 

Copper metal is used in making:

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

  1. electric wires

  2. fuse wires

  3. filling cavity in teeth

  4. preparation of hydrogen

Show answer
Correct Option: A
Explanation:
Copper is good conductor of electricity. Because of that, it is used as an electric wire to conduct the electricity.

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

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

  1. Zinc

  2. Platinum

  3. Copper

  4. Titanium

Show answer
Correct Option: D
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.

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

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

  1. Sulphur

  2. Oxygen

  3. Chlorine

  4. Xenon

Show answer
Correct Option: C
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.

Graphite is most commonly used in:

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

  1. pesticides

  2. pencil leads

  3. water purification

  4. fertilizers

Show answer
Correct Option: B
Explanation:

Cores of pencil are made of graphite which leaves grey or black marks that can be easily erased. Graphite pencils are useful for writing as well as drawing too. 

Liquid metals used for making thermometer is:

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

  1. zirconium

  2. mercury

  3. lead

  4. none of the above

Show answer
Correct Option: B
Explanation:

Mercury is the only liquid. Except mercury all metals are solids at room temperature. Mercury is used for making thermometer.

Which of the following metal is used in atomic energy and space projects?

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

  1. Titanium

  2. Zirconium

  3. Sodium

  4. All of above

Show answer
Correct Option: D
Explanation:

Titanium, sodium and zirconium metals are used in atomic energy and space science projects.