Chemistry Spontaneous change is one in there is: A lowering of free energy Increase in free energy An increase in Internal energy A lowering of entropy A lowering of free energy Increase in free energy An increase in Internal energy A lowering of entropy ANSWER DOWNLOAD EXAMIANS APP
Chemistry Mercury is emitted into air by Steam engine Coal fire Burning garbage Burning coal Steam engine Coal fire Burning garbage Burning coal ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is a mixture of potassium nitrate, powdered charcoal and sulphur called? Gun powder Glass Cement Paint Gun powder Glass Cement Paint ANSWER DOWNLOAD EXAMIANS APP
Chemistry In vulcanisation process, rubber can be hardened by adding Alcohol Nitrogen Silicon Sulphur Alcohol Nitrogen Silicon Sulphur ANSWER DOWNLOAD EXAMIANS APP
Chemistry Highly toxic gas which causes headache, visual difficulty, paralysis and even death is CO O3 CO2 All of these CO O3 CO2 All of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Poison used for killing rats is Calcium phosphide (Ca3P2) Zinc phosphide (Zn3P2) Magnesium nitride (Mg3N2) Magnesium phosphide (Mg3P2) Calcium phosphide (Ca3P2) Zinc phosphide (Zn3P2) Magnesium nitride (Mg3N2) Magnesium phosphide (Mg3P2) ANSWER DOWNLOAD EXAMIANS APP
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