Chemistry Questions Practice Question and Answer
8 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: 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: Which of the following gases is used in cigarette lighter?
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5f155520cf79540a7533b909- 1Propanefalse
- 2Radonfalse
- 3Butanetrue
- 4Methanefalse
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Answer : 3. "Butane "
Q: Which two atoms form an ionic bond? 1353 05b5cc604e4d2b4197774b4b7
5b5cc604e4d2b4197774b4b7- Show AnswerHide Answer
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Answer :
Explanation :
Ionic bonding is a type of chemical bond in which valence electrons are lost from one atom and gained by another.. This bond generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion. Example :: One example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it. The ions produced are oppositely charged and are attracted to one another due to electrostatic forces.
Q: Percentage of lead in lead pencil is:
1189 05ed62769436d8a49583c61d8
5ed62769436d8a49583c61d8- 1zerotrue
- 220false
- 380false
- 47false
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Answer : 1. "zero "
Q: Which is the purest form of iron?
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5ed8a86454f88e519fa1af9a- 1Steelfalse
- 2Cast ironfalse
- 3Pig ironfalse
- 4Wrought irontrue
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Answer : 4. "Wrought iron "
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: Table salt gets moist during rainy season because -
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5f2cf6ad79b9e641a7606520- 1sodium chloride contains some quantity of sodium iodidefalse
- 2sodium chloride contains hygroscopic impurities like - magnesium chloridetrue
- 3sodium chloride Is hygroscopicfalse
- 4sodium chloride is deliquescentfalse
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