General Science Permanent hardness of water can be removed by adding Chlorine Potassium Permanganate Washing Soda Bleaching Powder Chlorine Potassium Permanganate Washing Soda Bleaching Powder ANSWER DOWNLOAD EXAMIANS APP
General Science Which layer protects earth from harmful rays of the Sun? Ionosphere Troposphere Ozone layer Magnetosphere Ionosphere Troposphere Ozone layer Magnetosphere ANSWER DOWNLOAD EXAMIANS APP
General Science The percentage of oxygen present in air is approximately- 0.44 0.4 0.21 0.23 0.44 0.4 0.21 0.23 ANSWER DOWNLOAD EXAMIANS APP
General Science Atoms are composed of: Electrons and Nuclei Protons only Electrons only Electrons and protons Electrons and Nuclei Protons only Electrons only Electrons and protons ANSWER DOWNLOAD EXAMIANS APP
General Science The gas usually filled in the electric bulb is Hydrogen None of the listed here Nitrogen Oxygen Hydrogen None of the listed here Nitrogen Oxygen ANSWER DOWNLOAD EXAMIANS APP
General Science Amalgams are Alloys which contain mercury as one of the contents Alloys which have great resistance to abrasion Alloys which contain carbon Highly coloured alloys Alloys which contain mercury as one of the contents Alloys which have great resistance to abrasion Alloys which contain carbon Highly coloured alloys ANSWER DOWNLOAD EXAMIANS APP
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