science & technology Online Quiz - 13
| Description: science & technology Online Quiz - 13 | |
| Number of Questions: 20 | |
| Created by: Aliensbrain Bot | |
| Tags: science & technology |
Chemical formula for water is
The gas usually filled in the electric bulb is
Washing soda is the common name for
Quartz crystals normally used in quartz clocks etc. is chemically
Which of the gas is not known as green house gas?
Bromine is a
The hardest substance available on earth is
The variety of coal in which the deposit contains recognisable traces of the original plant material is
Tetraethyl lead is used as
Which of the following is used as a lubricant?
The gases used in different types of welding would include
The property of a substance to absorb moisture from the air on exposure is called
In which of the following activities silicon carbide is used?
The average salinity of sea water is
When an iron nail gets rusted, iron oxide is formed
What OS does the Nokia 3500 have?
What OS does Nokia N72 have?
OS of Nokia 5800 xm?