Increase in the OH– ion concentration, leads to
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Increase in the OH– ion concentration, leads to
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One of the constituents of baking powder is sodium hydrogencarbonate, the other constituent is
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Which gas is evolved when acids react with metals?
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Farmers neutralise the effect of acidity of the soil by adding
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Which among the following is not a base?
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Sodium carbonate is a basic salt because it is a salt of
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A teacher gave two test tubes to the students, one containing water and the other containing sodium hydroxide.
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To protect tooth decay, one is advised to brush the teeth regulary. The ingredient of the paste which checks tooth decay is:
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If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?
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Which of the following gives the correct increasing order of acidic strength?
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A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish- blue?
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PH scale of a neutral solution is
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