Q. The most commonly used substances in fluorescent tubes are
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Q. When formaldehyde and potassium hydroxide are heated , we get
Q. The 'Green House effect' is produced due to the presence of excess amount of
Q. Which one of the following is a natural colloid ?
Q. Which one among the following is called philosopher's wool?
Q. The bleeding of a wound is stopped by the application of ferric chloride because_____
Q. When a lead storage battery is discharged,
Q. Which one of the following has a maximum tendency to form M3 ion ?
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