Chemistry Questions Practice Question and Answer
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Q: A pungent small often present near the urinals is due to
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5ef1b1187fed557ba2abd940- 1Ammoniatrue
- 2Ureafalse
- 3Sulphur- di-oxidefalse
- 4Chlorinefalse
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Answer : 1. "Ammonia "
Q: The substances used for artificial rain is
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5ef1afdd7fed557ba2abd7d3- 1Silver iodidetrue
- 2Silver bromidefalse
- 3Ammonium nitratefalse
- 4All of the abovefalse
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Answer : 1. "Silver iodide "
Q: If the pH value of a substance is lower than 7, it would be considered as–
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5ee85e95109b5d6e015e3b7b- 1Neutralfalse
- 2Basefalse
- 3Acidtrue
- 4Ionfalse
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Answer : 3. "Acid"
Q: Which of the following is the most common kidney stone-forming compound?
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5ee85d18c9ddb00b8bda9adc- 1Calcium oxalatetrue
- 2Magnesium oxidefalse
- 3Sodium bicarbonatefalse
- 4Magnesium citratefalse
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Answer : 1. "Calcium oxalate"
Q: What is the mass number of an element, the atom of which contains two Protons, two neutrons and two electrons?
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5ee35e7455d51a0f6482cd3c- 12false
- 24true
- 36false
- 48false
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Answer : 2. "4 "
Q: The air is the example of:
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5ee0d53b1541492ae598124e- 1The solution of solid in the gasfalse
- 2The solution of gas in the gastrue
- 3The solution of liquid in the gasfalse
- 4The solution of liquid in the solidfalse
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Answer : 2. "The solution of gas in the gas"
Q: In which of the following chlorine has + 1 oxidation number?
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5ee0d1d3ca41b347ed350a6c- 1Zinc chloridefalse
- 2Chlorinefalse
- 3Hypochlorous acidtrue
- 4Hydrochloric acidfalse
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Answer : 3. "Hypochlorous acid"
Q: What is the role of a positive catalyst in a chemical reaction?
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5ed8d7d354f88e519fa2312f- 1It increases the rate of reactiontrue
- 2It decreases the rate of reactionfalse
- 3It increases the yield of the productsfalse
- 4It provides better purity of the productsfalse
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Answer : 1. "It increases the rate of reaction "
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