Chemistry · General Awareness

Chemistry of Metals and Alloys

1,851 Questions

Review the physical and chemical properties of various metals and their common alloys. This collection covers industrial applications, metallurgical processes, and practical uses of elements like silicon and boron. Practice these questions to strengthen your chemistry fundamentals for exams.

Properties of metalsCommon alloysIndustrial metallurgyChemical applications

Chemistry of Metals and Alloys Questions

Multiple choice geography manufacturing industries in india - ii : mineral-based distribution of major industries automobile and electronic industries electronic, heavy and petrochemical industries in india

The metal which is used as a raw material for the manufacture of heavy machinery is ______.

  1. Aluminium

  2. Tin

  3. Sodium

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

  • The metal which is used as a raw material for the manufacture of heavy machinery is iron. Manufacturing of heavy machinery, equipment and bulk tools fall under heavy machinery.
  • Iron and steel industry is a very good example of heavy industry all most all the manufacturing process involves use of iron and steel like shipbuilding, manufacture of trains, trucks etc. It is often referred to as backbone of modern industry.

Multiple choice chemistry group 2 physical properties of alkaline earth metals alkali metals properties of alkaline earth metals

Alkaline earth metal(s) which does (do) not
impart colour to the flame is (are):

  1. Be

  2. Mg

  3. Ca

  4. Sr
Reveal answer Fill a bubble to check yourself
A,B Correct answer
Explanation

Beryllium($Be$) and magnesium($Mg$) cannot give flame test. They have small size. They strongly binds their electrons. Thus they have high ionization enthalpies. The thermal energy of flame is not sufficient to excites their electrons.

Multiple choice aluminium patterns and properties of metals chemistry

Thermite is a mixture of iron oxide and ___________.

  1. aluminium powder

  2. zinc powder

  3. iron turnings

  4. copper turnings
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Answer:- (A) Aluminium Powder
Thermite is the mixture of iron oxide $Fe _2O _3$ (rust) and aluminum powder. When it is ignited the aluminum powder reacts with the $O _3$ part of the rust in a highly exothermic reaction, the resulting product is molten iron. Thermite is commonly used in welding because the molten iron has the ability to seep into cracks in metal.

Multiple choice aluminium patterns and properties of metals chemistry

Which of the following metal is protected by a layer of its own oxide?

  1. Silver

  2. Sodium

  3. Aluminium

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

Aluminium is reactive and reacts spontaneously with water or air to form aluminium oxide $(Al _2O _3)$, forms a stable passive layer which protects aluminium from corrosion or further oxidation.

Multiple choice aluminium patterns and properties of metals chemistry

Duralumin is a alloy. It does not contains:

  1. $Al$
  2. $Cu$
  3. $Mg$
  4. $Na$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Duralumin is an alloy of aluminium that has copper and contains small amounts of magnesium, manganese, iron, and silicon: its applications requiring lightness and strength, as in aeroplane construction.So sodium is not present in Duralumin.

Hence option $D$ is correct.

Multiple choice physics heat - measurement thermometers application of various thermometric scales different types of thermometers

What does the bulb of a clinical thermometer contain?

  1. Water

  2. Mercury

  3. Iron

  4. Zinc
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
A clinical thermometer is a thermometer used to measure human body temperature. Most old ones use mercury thermometer. It is accurate and sensitive, because it has a narrow place where the mercury level rises very fast.

These thermometers are used in clinics by doctors, so they are also called a doctor's thermometers or medical thermometers. Most of them show both Celsius scale and Fahrenheit temperature scales. The scale runs from 35 degree Celsius to 42 degree Celsius.

Medical thermometers are cleaned before and after each use, with alcohol.
Multiple choice chemistry the periodic table dobereiner's triads development of the modern periodic table into the history

Which of the following is an artificial element made by man?

  1. Gallium

  2. Iron

  3. Helium

  4. Americium
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
In chemistry, a synthetic element is a chemical element that does not occur naturally on Earth, and can only be created artificially. So far, 24 synthetic elements have been created (those with atomic numbers 95–118). Americium is one of them having atomic no. 95.

Hence, the answer is option $D$.
Multiple choice nanochemistry nanotechnology applied chemistry materials chemistry

Gold nanoparticles are highly effective as:

  1. selective oxidation catalysts

  2. selective reduction catalysts

  3. non selective oxidation catalysts

  4. non selective reduction catalysts
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gold nanoparticles are highly effective as selective oxidation catalysts. It is used in the oxidation of alcohols and aldehydes.