What is the safety curtain in cinema or theatre made off ?
Explain acid gas?
What is solubility product ?
Why does water boil above 100 o C in mines ?
pH is having unit?
Explain the following ? Isotope, Isobars, Stable configuration, Electronic Theory of Valency, Valency
Which gas is used, in laboratories etc. for burners ?
Why does the water in tanks and ponds not freeze in winter ?
How to do acidity alkanity test ofsodium chloride
what is the name of the material used in making the plates used for serving food in hotels?
Explain the structure of a dna molecule?
Explain extraction of ephedrine from a mineral block?
How many elements have been discovered on the Periodic Table?