Chemistry The compound to which H2 does not add is Tetra – a –naphthylethylene Tetraphenyl ethylene Tetra –9 – phenanthrylethylene Biphenyl ethylene Tetra – a –naphthylethylene Tetraphenyl ethylene Tetra –9 – phenanthrylethylene Biphenyl ethylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry Galvanised iron is made by coating iron with Sulphur Nickel Chromium Zinc Sulphur Nickel Chromium Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry When ice cubes are made, the entropy of water Does not change Increases May either increase or decrease depending on the process used Decreases Does not change Increases May either increase or decrease depending on the process used Decreases ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum sublimation of sodium to emit yellow colour The low ionisation energy of sodium Its ability to absorb all other colours except yellow The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum sublimation of sodium to emit yellow colour The low ionisation energy of sodium Its ability to absorb all other colours except yellow ANSWER DOWNLOAD EXAMIANS APP
Chemistry Galena is a mineral of Calcium Iron Gold Lead Calcium Iron Gold Lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of 'laughing gas' is Nitrogen dioxide Nitric oxide Nitrous oxide Nitrogen pentoxide Nitrogen dioxide Nitric oxide Nitrous oxide Nitrogen pentoxide ANSWER DOWNLOAD EXAMIANS APP
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