How can you mark your name on a glass plate by a simple chemical method ?1 2173
If you are given two liquids, which look like water, how can you, by two physical tests, prove which one of them may be water ?2 2789
When carbon is made to burn in an atmosphere of oxygen, what is produced ?1 1981
How can the iron sheets be prevented from rusting ?3 2452
How is cement manufactured ?3 4473
What is electroplating ?5 5763
What is gas-filled lamp ?1 2177
How is electricity generated from water ?7 7112
Which metal is used for coating the backs of the mirrors ?2 2586
At what temperature does mercury freeze ?3 5074
Is air mixture or compound ?3 5456
Which gas is used in bulbus ?2 2510
Which gas is used in refrigeration plants ?2 4230
What is the role of silver sulphate?
What is density of a liquid?
Why is ammonia solution added while preparing edta solution?
Do all explosions produce carbon dioxide or carbon monoxide?
What is pka of acid?
Define what is oxidation and reduction reaction?
What is fluidity of a liquid?
Why is the role of glycerol & naoh?
What are the products formed after cod analysis?
what is difference b/w "regio selectivity" & "sterio selectivity"
What is chemical oxygen demand?
How are ph and pka related?
What makes a molecule into organic molecule?
Write the equation of photosynthesis?
Mention a few application of cod test in environmental engineering practice.