Chemistry Practice Question and Answer
8 4 Q:
5f699109397b1a52908c9799 4 Q:
5feb034bf33a00432afeea62 4 Q:
5ed63d274bd6e60aba33c8a4 4 Answer : 1. "a nonpolar molecule with polar bonds"
4 Q:
5edefcd28c4c964f73d38693 4 Q:
5ed634c2436d8a49583c72fa 4 Q:
60828f7fbfeec334bc88fc0b 4 Q:
5feb056c00e3f71b828c2206
Q: What is liberated when the base is dissolved in water?
1546 05f699109397b1a52908c9799
5f699109397b1a52908c9799- 1(OH) - iontrue
- 2H + ionfalse
- 3Both ionsfalse
- 4No ionfalse
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Answer : 1. "(OH) - ion"
Q: A fermentation of grapes?
1542 05feb034bf33a00432afeea62
5feb034bf33a00432afeea62- 1chemical change istrue
- 2physical changefalse
- 3Both chemical and physical changesfalse
- 4Othersfalse
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Answer : 1. "chemical change is"
Q: Milk is a natural
1541 05ed63d274bd6e60aba33c8a4
5ed63d274bd6e60aba33c8a4- 1Solutionfalse
- 2Mixturefalse
- 3Suspensionfalse
- 4Emulsiontrue
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Answer : 4. "Emulsion "
Q: The carbon tetrachloride molecule (CCl4) is 1538 05b5cc604e4d2b4197774b4e7
5b5cc604e4d2b4197774b4e7- 1a nonpolar molecule with polar bondstrue
- 2a nonpolar molecule with nonpolar bondsfalse
- 3a polar molecule with polar bondsfalse
- 4a polar molecule with nonploar bondsfalse
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Answer : 1. "a nonpolar molecule with polar bonds"
Explanation :
Answer: A) a nonpolar molecule with polar bonds Explanation: The four bonds of carbon tetrachloride (CCl4) are polar, but the molecule is nonpolar because the bond polarity is cancelled by the symmetric tetrahedral shape. Hence, making the net dipole as zero and molecule as non-polar. When other atoms substitute for some of the Cl atoms, the symmetry is broken and the molecule becomes polar.
Q: Permanent hardness of water may be removed by the addition of
1536 05edefcd28c4c964f73d38693
5edefcd28c4c964f73d38693- 1sodium carbonatetrue
- 2alumfalse
- 3potassium permanganatefalse
- 4limefalse
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Answer : 1. "sodium carbonate"
Q: The gas used for artificial fruit ripening of green fruit is
1526 05ed634c2436d8a49583c72fa
5ed634c2436d8a49583c72fa- 1Ethanefalse
- 2Ethylenefalse
- 3Methanefalse
- 4Acetylenetrue
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Answer : 4. "Acetylene "
Q: Which of the below allotropes of carbon is in the form of geodesic globe?
1514 060828f7fbfeec334bc88fc0b
60828f7fbfeec334bc88fc0b- 1Fullerenetrue
- 2Carbon nanotubefalse
- 3Graphitefalse
- 4Diamondfalse
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Answer : 1. "Fullerene "
Q: Approximate pH value of lemon juice?
1503 05feb056c00e3f71b828c2206
5feb056c00e3f71b828c2206- 110false
- 22.2true
- 312false
- 414false
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Answer : 2. "2.2"
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