Which of the following is the lightest gas?
1 Nitrogen
2 Hydrogen
3 Ammonia
4 Carbon dioxide
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Which are the research centres of department of atomic energy?
At which place will second centre of the indian institute of science be opened?
What is the Nutrition ?
Which of the following is used as a lubricant? 1 Graphite 2 Silica 3 Diamond 4 Iron oxide
which of the following fibers is generally preferred for making gauze and lint? 1 Cotton 2 Rayon 3 Nylon 4 Terylene
What are pulsars?
The wavelength of X-ray is of order of 1 1 cm 2 1m 3 1 Angstrom 4 10 micron
The neutral atom’s two isotopes differ in the number of 1 Electron shells 2 Protons 3 Valence electrons 4 Neutrons
infra-red rays were first detected by? the intensity level of sound is measured in? the material used for a fuse wire should? radioactivity is a property of? what is the source of electric energy in an artificial satellite? the following is used as a lubricant in heavy machines? supher, bauxite , graphite, phosphorus
The chemical (ethyl merceptan) added to the otherwise odorless LPG cooking gas for imparting a detectable smell to the gas is a compound of 1 Sulphur 2 Fluorine 3 Chlorine 4 Bromine
Isotopes are separated by 1 Filtration 2 Sublimation 3 Distillation 4 Crystallization
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The country helped in arihant’s built?