Question : Which type of reaction produces the most harmful radiation?

Option 1: fusion reaction

Option 2: Fission reaction

Option 3: chemical reaction

Option 4: Photo-Chemical reaction

Question : What is the process of melting also called?

Option 1: Fusion

Option 2: Galvanisation

Option 3: Crystallisation

Option 4: Evaporation

Question : An emulsion is a colloid of a

Option 1: Gas in a liquid

Option 2: liquid in a liquid

Option 3:  liquid in a gas

Option 4: Gas in a solid

Question : Burning of coal is an example of_________.

Option 1: decomposition reaction

Option 2: double displacement reaction

Option 3: combination reaction

Option 4: displacement reaction

Question : An electric current is expressed by a unit called:

Option 1: Metre

Option 2: Ampere

Option 3: Watt

Option 4: Joule