Rubber is coagulated from latex by adding
1 Hydrochloric acid
2 Acetic acid
3 Sulphuric acid
4 Carbonic acid
Diamond is harder than graphite because of 1 Difference of layers of atoms 2 Tetrahedral structure of diamond 3 Difference of crystalline structures 4 None of these
In which of the following processes light energy is converted into chemical energy? 1 Respiration 2 Fermentation 3 Photosynthesis 4 Photoresiration
The filament of an electric bulb is made of 1 Iron 2 Nichrome 3 tungsten 4 Graphite
9 Answers Germanium, Google, Graphite India, Tungsten,
If today is Saturday what day will it be from 500 days?
what is center of gravity?
Which of the following reactions is used for increasing the number of carbon atoms in a chain? 1 Substitution reaction 2 Wurtz reaction 3 Friedel – Crafts reaction 4 Cannizzaro’s reaction
The major ingredient of leather is 1 Carbohydrate 2 Collagen 3 Polymer 4 Nucleic acid
When and by whom was the meteorological unit founded in bangalore science institute?
Which of the following elements is not-radioactive? 1 Uranium 2 Thorium 3 Plutonium 4 zirconium
Why is ice wrapped in gunny sacks to prevent it from melting
In vulcanization, natural rubber is heated with 1 Carbon 2 Sulphur 3 Silicon 4 Phosphorus
Names of some plants and trees that sleep during the day