The type of glass used in making lenses and prisms is
1 Soft glass
2 Pyrex glass
3 Jena glass
4 Flint glass
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The ratio of pure gold in 18 carat gold is 1 60% 2 75% 3 80% 4 100%
3 Answers DSSSB-Delhi Subordinate Service Selection Board,
Which is the research reactors of bhabha atomic research centre?
The major constituents of Portland cement include 1 Lime, silica and iron oxide 2 Lime, silica and magnesia 3 Silica, alumina and magnesia 4 Lime, silica and alumina
The pink color of Bayer’s reagent is discharged when acetylene is passed through it. This is due to the formation of 1 Acetic acid 2 Ethylene 3 Water 4 Oxalic acid
NO OF PLANT IN ONGC
atoms are composed of Electrons & Protons or Electrons & Protons ?
Which of the following reagents gives a silver mirror test when added to aldehydes? 1 Fehling’s solution 2 Tollen’s Reagent 3 Ebaeyer’s Reagent 4 Nessler’s Reagent
How can we determine the no: of revolutions of earth around sun?
What is balanced diet? Give the everyday diet of a normal man.
Why is ice wrapped in gunny sacks to prevent it from melting
What is the Cellular Structure ?
plants in a food chain are actually the
2 Answers Competitive Exams, Stenographer,