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11th CBSE
IMPORTANT
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NaCl crystals have some yellow colour. This is due to the presence of .

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Important Questions on States of Matter: Solid State

HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 6 - States of Matter: Solid State>TEST YOUR GRIP>Q 31
The process of adding impurities to a crystalline substance so as to change its properties like conductivity etc. is called _____.
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 6 - States of Matter: Solid State>TEST YOUR GRIP>Q 32
If arsenic is added as impurity to silicon, the type of semiconductor obtained is called _____.
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 6 - States of Matter: Solid State>TEST YOUR GRIP>Q 33
If aluminium is added as impurity to silicon, the type of semiconductor formed is called _____.
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 6 - States of Matter: Solid State>TEST YOUR GRIP>Q 37
If there is a large energy gap between the filled valence band and empty conduction band, the substance acts as _____.
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 6 - States of Matter: Solid State>TEST YOUR GRIP>Q 38
The electrical conductivity of semiconductors _____ with increase in temperature.
EASY
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 6 - States of Matter: Solid State>TEST YOUR GRIP>Q 39
Pure substances which show conductivity similar to that of silicon and germanium are called _____ semiconductors.
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 6 - States of Matter: Solid State>TEST YOUR GRIP>Q 40
As regards magnetic behaviour, TiO2 is _____.
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 6 - States of Matter: Solid State>TEST YOUR GRIP>Q 41
Substances which show permanent magnetism even in the absence of magnetic field are called _____.