E-PolyLearning

1. Consider reaction: AgNO₃ + NaCl → AgCl + NaNO₃. state of NaNO₃ will be
a. solid
b. aqueous
c. gaseous
d. liquid
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Answer: (b).aqueous

2. If hydrogen (H) of an acid (H+) is partially replaced by a metal, it forms
a. neutral oxides
b. amphoteric oxides
c. acid salt
d. salt
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Answer: (c).acid salt

3. Incorrect statement is: Fizzy sweets _______
a. contain sodium hydrogen acetate.
b. makes tongue feel cold.
c. eating is an endothermic reaction.
d. are produced in chewing food.
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Answer: (a).contain sodium hydrogen acetate.

4. Sufficient hemoglobin in blood can be tested by adding a drop of
a. Zinc Sulphate
b. Copper Sulphate
c. Magnesium Sulphate
d. Potassium Sulphate
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Answer: (b).Copper Sulphate

5. If metal hydroxide (-OH-) and acid (H+) reaction to form Potassium Nitrate (KNO₃), other by-product will be
a. water
b. hydrogen
c. Carbon dioxide
d. water and carbon dioxide
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Answer: (a).water

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