Chemistry Helium gas is used in gas balloons instead of hydrogen gas because it is Non-combustible More abundant than hydrogen More stable Lighter than hydrogen Non-combustible More abundant than hydrogen More stable Lighter than hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Terylene is a condensation polymer of ethylene glycol and which acid? Terephthalic acid Benzoic Acid Phthalic acid Salicylic acid Terephthalic acid Benzoic Acid Phthalic acid Salicylic acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the petroleum wax ? Jojoba wax Bees wax Carnauba wax Paraffin wax Jojoba wax Bees wax Carnauba wax Paraffin wax ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following laser types is used in a laser printer? Dye laser Excimer laser Semiconductor laser Gas laser Dye laser Excimer laser Semiconductor laser Gas laser ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following elements is an example of noble gas ? Hydrogen Helium Nitrogen Chlorine Hydrogen Helium Nitrogen Chlorine ANSWER DOWNLOAD EXAMIANS APP
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