Chemistry General Knowledge Questions Practice Question and Answer
8 Q: The atomic mass of an element has the maximum number of electrons in its second orbit—
1668 05f86a83ddcf12a01a1418fb3
5f86a83ddcf12a01a1418fb3- 12false
- 28true
- 310false
- 416false
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Answer : 2. "8"
Q: Washing soda is the common name for
1647 15edef8088c4c964f73d377df
5edef8088c4c964f73d377df- 1Calcium carbonatefalse
- 2Sodium carbonatetrue
- 3Calcium bicarbonatefalse
- 4Sodium bicarbonatefalse
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Answer : 2. "Sodium carbonate"
Q: Crystallization is an example of
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5f742bd338027c5313ed6bc9- 1Physical changetrue
- 2Chemical Transformationfalse
- 3Chemical reactionfalse
- 4Galvanizationfalse
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Answer : 1. "Physical change"
Q: The carbon tetrachloride molecule (CCl4) is 1554 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
1553 05edefcd28c4c964f73d38693
5edefcd28c4c964f73d38693- 1sodium carbonatetrue
- 2alumfalse
- 3potassium permanganatefalse
- 4limefalse
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Answer : 1. "sodium carbonate"
Q: Which of the below allotropes of carbon is in the form of geodesic globe?
1538 060828f7fbfeec334bc88fc0b
60828f7fbfeec334bc88fc0b- 1Fullerenetrue
- 2Carbon nanotubefalse
- 3Graphitefalse
- 4Diamondfalse
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Answer : 1. "Fullerene "
Q: The chemical name of limestone is?
1469 05f0eda3fb6738d790d13f5d3
5f0eda3fb6738d790d13f5d3- 1Sodium Chloridefalse
- 2Sodium Sulphidefalse
- 3Calcium carbonatetrue
- 4Magnesium Chloridefalse
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Answer : 3. "Calcium carbonate "
Q: The melting point of tungsten is____.
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5f86a2598a599d39499a8013- 13,083 ° Cfalse
- 23,830 ° Cfalse
- 33,380 ° Ctrue
- 43,308 ° Cfalse
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