General science questions with answers
116 multiple-choice questions. Open any question for its answer and explanation.
- 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 recognizable traces of the original plant material is
- Tetraethyl lead is used as
- Which of the following is used as a lubricant?
- The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is
- 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?
- When an iron nail gets rusted, iron oxide is formed
- Galvanised iron sheets have a coating of
- Among the various allotrope of carbon
- The group of metals Fe, Co, Ni may best called as
- Heavy water is
- The chemical (Ethyl Mercaptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
- The element common to all acids is
- Non stick cooking utensils are coated with
- Monazite is an ore of
- Carbon, diamond and graphite are together called
- Potassium nitrate is used in
- Permanent hardness of water may be removed by the addition of
- Soda water contains
- The most important ore of aluminum is