Chemistry Questions Practice Question and Answer
8 Q: __________________ is a drug or substance that makes you feel relaxed and makes your body work and react more slowly.
435 062e7ec656f92bf0da7c49f2d
62e7ec656f92bf0da7c49f2d- 1Antidotefalse
- 2Analgesicfalse
- 3Antihistaminefalse
- 4Depressanttrue
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Answer : 4. "Depressant"
Q: NaHCO3 is chemical formula for ___________.
452 062de6d24313eb40eb89fc5a4
62de6d24313eb40eb89fc5a4- 1Boraxfalse
- 2Vinegarfalse
- 3Limefalse
- 4Baking sodatrue
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Answer : 4. "Baking soda"
Q: What is the more common name for solid carbon dioxide?
428 062bea9681d322d793f52a911
62bea9681d322d793f52a911- 1Quick Silverfalse
- 2Epsomfalse
- 3Potashfalse
- 4Dry Icetrue
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Answer : 4. "Dry Ice"
Q: Curie is the unit of:
714 061655c5bd881f96172322089
61655c5bd881f96172322089- 1Heatfalse
- 2Energyfalse
- 3Radioactivitytrue
- 4Temperaturefalse
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Answer : 3. "Radioactivity "
Q: Atomic number of which of the following elements is greater than that of Copper?
899 06113d25688e0566940a80fd8
6113d25688e0566940a80fd8- 1Zinctrue
- 2Manganesefalse
- 3Ironfalse
- 4Chromiumfalse
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Answer : 1. "Zinc"
Q: Which two atoms form an ionic bond? 1157 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: Lightest metal is___
1085 05f7465f1a921aa16e68bd6a5
5f7465f1a921aa16e68bd6a5- 1Potassiumfalse
- 2Lithiumtrue
- 3Sodiumfalse
- 4Aluminumfalse
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Answer : 2. "Lithium"
Q: Potassium nitrate is used in
971 05f6c2e19ec13dd7480faf0f8
5f6c2e19ec13dd7480faf0f8- 1medicinefalse
- 2saltfalse
- 3glassfalse
- 4fertilisertrue
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