Chemistry Atomic number of an atom gives the number of which of the following ? Neutrons and protons Protons Neutrons Electrons Neutrons and protons Protons Neutrons Electrons ANSWER DOWNLOAD EXAMIANS APP
Chemistry The nucleus of a hydrogen atom consists of 1 neutron only 1 proton + 2 neutron 1 electron only 1 proton only 1 neutron only 1 proton + 2 neutron 1 electron only 1 proton only ANSWER DOWNLOAD EXAMIANS APP
Chemistry Neoprene is a polymer of Isoprene Chloroprene Isobutane Isopentane Isoprene Chloroprene Isobutane Isopentane ANSWER DOWNLOAD EXAMIANS APP
Chemistry The substance most commonly used as a food preservative is Sodium salt of benzoic acid Tartaric acid Sodium carbonate Acetic acid Sodium salt of benzoic acid Tartaric acid Sodium carbonate Acetic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Why is water not suitable for putting out a petrol fire ? The oxygen content of water is isolated by petrol and thus it helps in burning Water, being heavy, slips below petrol which thus remains in contact with air and burns Petrol is too inflammable to be extinguished by water The heat required for combustion of petrol is very low The oxygen content of water is isolated by petrol and thus it helps in burning Water, being heavy, slips below petrol which thus remains in contact with air and burns Petrol is too inflammable to be extinguished by water The heat required for combustion of petrol is very low ANSWER DOWNLOAD EXAMIANS APP
Chemistry Trinitrotoluene is Used to fuse two metals Used as an explosive Used as an abrasive Used to melt metals Used to fuse two metals Used as an explosive Used as an abrasive Used to melt metals ANSWER DOWNLOAD EXAMIANS APP
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