Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Sodium peroxide Hydrogen peroxide Ozone Barium peroxide Sodium peroxide Hydrogen peroxide Ozone Barium peroxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nitrogen forms a variety of compounds in all oxidation states ranging from –3 to + 5 –3 to + 3 –3 to + 6 –3 to + 4 –3 to + 5 –3 to + 3 –3 to + 6 –3 to + 4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Conduction band electrons have more mobility than holes because they Have negative charge Experience collision less frequently Need less energy to move them Are lighter Have negative charge Experience collision less frequently Need less energy to move them Are lighter ANSWER DOWNLOAD EXAMIANS APP
Chemistry The enzyme that converts glucose to ethyl alcohol is : Maltase Invertase Zymase Diastase Maltase Invertase Zymase Diastase ANSWER DOWNLOAD EXAMIANS APP
Chemistry How many electrons in a Hydrogen atom Three Two One Four Three Two One Four ANSWER DOWNLOAD EXAMIANS APP
Chemistry If a buffer solution is diluted its pH Remains same Is decreased Is increased Will slowly increase and then it will decrease Remains same Is decreased Is increased Will slowly increase and then it will decrease ANSWER DOWNLOAD EXAMIANS APP
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