Chemistry Questions Practice Question and Answer
8 Q: What is the more common name for solid carbon dioxide?
582 062bea9681d322d793f52a911
62bea9681d322d793f52a911- 1Quick Silverfalse
- 2Epsomfalse
- 3Potashfalse
- 4Dry Icetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Dry Ice"
Q: The gas used for artificial fruit ripening of green fruit is
1532 05ed634c2436d8a49583c72fa
5ed634c2436d8a49583c72fa- 1Ethanefalse
- 2Ethylenefalse
- 3Methanefalse
- 4Acetylenetrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Acetylene "
Q: Which gas is known as 'noble gas' ?
816 05ef2f5457c1ec61320b14d6b
5ef2f5457c1ec61320b14d6b- 1Heliumtrue
- 2Carbon dioxidesfalse
- 3Hydrogenfalse
- 4Oxygenfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "Helium "
Q: Which two atoms form an ionic bond? 1357 05b5cc604e4d2b4197774b4b7
5b5cc604e4d2b4197774b4b7- Show AnswerHide Answer
- Workspace
- SingleChoice
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:
1196 05ed62769436d8a49583c61d8
5ed62769436d8a49583c61d8- 1zerotrue
- 220false
- 380false
- 47false
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 1. "zero "
Q: Which is the purest form of iron?
1498 05ed8a86454f88e519fa1af9a
5ed8a86454f88e519fa1af9a- 1Steelfalse
- 2Cast ironfalse
- 3Pig ironfalse
- 4Wrought irontrue
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 4. "Wrought iron "
Q: If the pH value of a substance is lower than 7, it would be considered as–
1002 05ee85e95109b5d6e015e3b7b
5ee85e95109b5d6e015e3b7b- 1Neutralfalse
- 2Basefalse
- 3Acidtrue
- 4Ionfalse
- Show AnswerHide Answer
- Workspace
- SingleChoice
Answer : 3. "Acid"
Q: Table salt gets moist during rainy season because -
2191 05f2cf6ad79b9e641a7606520
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
- Show AnswerHide Answer
- Workspace
- SingleChoice