KBC Questions and Quiz, Multiple Choice Questions and Answers

Question: Most of the magnetic power appears to be concentrated at certain points of a magnet. These points are called...?

1. Poles
   
2. Inductors
   
3. Keepers
   
4. Pointers
   

Incorrect Answer

Correct Answer
Magnetic poles are the points (N for north and S for south) slightly within the ends of a magnet where most of the magnetic power appears to be concentrated.

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Question: _______ materials are those that can be influenced by a magnet.

1. Magnetic
   
2. Thermal
   
3. Optical
   
4. None
   

Incorrect Answer

Correct Answer
Magnetic substances like iron, steel, cobalt and nickel can be influenced by a magnet.

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Question: The least reactive elements of the periodic table are...?

1. Alkaline Earth Metals
   
2. Noble Gases
   
3. Alkali Metals
   
4. Transition Metals
   

Incorrect Answer

Correct Answer

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Question: The law that "the physical and chemical properties of elements are periodic functions of their atomic weights" was given by...?

1. Mendeleev
   
2. Bohr
   
3. Lothar Meyer
   
4. Moseley
   

Incorrect Answer

Correct Answer

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Question: The Law of Octaves was given by...?

1. Mendeleev
   
2. Dobereiner
   
3. John Newlands
   
4. Bohr
   

Incorrect Answer

Correct Answer

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Question: Elements in the modern periodic table are arranged on the basis of their...?

1. Atomic Mass
   
2. Atomic Number
   
3. Boiling Point
   
4. Chemical Symbols alphabetically
   

Incorrect Answer

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Question: Elements in the same group have similar...?

1. Atomic masses
   
2. Chemical properties
   
3. Atomic radii
   
4. Atomic numbers
   

Incorrect Answer

Correct Answer

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Question: The horizontal rows in a periodic table are called...?

1. Groups
   
2. Lanthanides
   
3. Periods
   
4. Atomic Structures
   

Incorrect Answer

Correct Answer

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Question: The law that "the properties of elements are periodic functions of their atomic numbers" was given by...?

1. Linus Pauling
   
2. Mendeleev
   
3. Heisenberg
   
4. Moseley
   

Incorrect Answer

Correct Answer

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Question: The first element in the modern periodic table is...?

1. Hydrogen
   
2. Lithium
   
3. Oxygen
   
4. Helium
   

Incorrect Answer

Correct Answer

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