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General Science for Class 7
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Alkaline has ph value above
10
14
4
7
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Nature of solute has an effect on its
solubility
reaction
distillation
purification
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If carbon dioxide is passed through limewater it will form
white precipitate
white smoke
acid rain
blue flame
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Another name of ‘lime’ is
caustic soda
calcium dioxide
milk of magnesia
calcium oxide
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Examples of alkalis include
aqueous ammonia
sodium hydroxide
calcium hydroxide
all of them
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The antacids that are used for treating indigestion contain
potassium hydroxide
sodium hydroxide
magnesium carbonate
magnesium hydroxide
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Grapes contain
ethanoic acid
acetic acid
citric acid
tartaric acid
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Paint gets dissolved in
alcohol
turpentine
water
acetone
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‘Lactic acid’ is present in
yogurt
lemon
apple
guava
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The acid which is used to make fizzy drinks, is
citrus acid
acetic acid
citric acid
carbonic acid
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