Material Science MCQ Questions Pdf Download - 1

Question: 1

The mass of an electron is _____ kg.

Answer:

9.107 × 10-31

Question: 2

Elements of electric heaters and filament lamps are made of high resistivity materials. This is done to ____ the filament length.

Answer:

reduce

Question: 3

The total excess or deficiency of electrons in a body is called the _____

Answer:

charge

Question: 4

When a normal atom loses an electron, it becomes a _____ ion.

Answer:

positive

Question: 5

Secondary bonds are _____ than primary bonds.

Answer:

weaker

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