Advertisements
Advertisements
प्रश्न
One of the following substances is neither a good conductor of electricity nor an insulator. This substance is :
विकल्प
chromium
germanium
gallium
potassium
Advertisements
उत्तर
germanium
Germanium is metalloid. It is neither a good conductor of electricity nor an insulator. It is a semiconductor.
APPEARS IN
संबंधित प्रश्न
Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............
What do you mean by the inter-molecular spaces? How do they vary in different states of matter?
Gases have definite volume but no definite shape.
Name the processes involved in two cases.
Name the terms for the change of vapour into a liquid.
A kind of matter which can sublime is
Describe in your own words, what happens to the particles when salt dissolves in water.
Explain why, osmosis can be considered to be a special kind of diffusion. Classify the following into
(i) osmosis, and (ii) diffusion :
- swelling up of a raisin on keeping in water
- spreading of virus on sneezing
- earthworm dying on coming in contact with common salt
- shrinking of grapes kept in thick sugar syrup
- preserving of pickles in salt
- spreading of smell of cake being baked in the kitchen
- aquatic animals using oxygen dissolved in water during respiration
How will you differentiate between a suspension and a colloid ?
Define Foam Give one example.
What is the effect of temperature on the solubility of solids in liquids ?
Fill in the following blanks with suitable words :
The separation of liquids by fractional distillation is based on the difference in their .....................
How will you separate a mixture of iron filings and powdered carbon ?
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
The property which allows the metals to be hammered into their sheets is ______.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
Intermolecular space is maximum in ______.
Give an example of liquid in gas.
Define the term matter.
Define the term matter.
