Chemistry General Knowledge Questions Practice Question and Answer
8 Q: Who was the inventor of positron?
916 061655bfa7d6182610f5d706e
61655bfa7d6182610f5d706e- 1Chadwickfalse
- 2Andersontrue
- 3Rutherfordfalse
- 4J.J. Thomsonfalse
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Answer : 2. "Anderson "
Q: Which of the following compound contains only Carbon and Hydrogen atoms in their formation?
685 0613ac986dffb173b7bd55970
613ac986dffb173b7bd55970- 1Chloroformfalse
- 2Teflonfalse
- 3Ethanolfalse
- 4Benzenetrue
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Answer : 4. "Benzene"
Q: Which of the following is a non-metal?
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61275e1a302e8b067c99d237- 1Cobaltfalse
- 2Hydrogentrue
- 3ironfalse
- 4goldfalse
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Answer : 2. "Hydrogen"
Q: Methane an air pollutant is produced ___________
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6113d4d088e0566940a8176d- 1by burning of coal in insufficient airfalse
- 2by digestion of food by animalstrue
- 3by action of ultraviolet light on nitrogenous compounds.false
- 4as a by-product of manufacturing ammoniacal fertilizersfalse
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Answer : 2. "by digestion of food by animals"
Q: Which energy is converted into electrical energy by a solar cell?
1010 060fe429981fb4616a6566734
60fe429981fb4616a6566734- 1Chemical Energyfalse
- 2Nuclear energyfalse
- 3Solar energytrue
- 4Magnetic energyfalse
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Answer : 3. "Solar energy"
Q: In which state of matter, the distance between the molecules is minimum ?
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60fe402081fb4616a6565dbb- 1Solidtrue
- 2Liquidfalse
- 3Gasfalse
- 4Plasmafalse
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Answer : 1. "Solid"
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: What is the systematic name of PbO? 1372 05b5cc5ffe4d2b4197774b412
5b5cc5ffe4d2b4197774b412- 1Plumbic oxidefalse
- 2Lead oxidefalse
- 3Lead(II) oxidetrue
- 4All of the abovefalse
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Answer : 3. "Lead(II) oxide"
Explanation :
Answer: C) Lead(II) oxide Explanation: The systematic name for a chemical is the unique name given to it by the International Union of Pure Applied Chemistry (IUPAC). The IUPAC name can differ from a chemical compound's general name. PbO is an ionic compound since it consists of a Lead as metal and Oxygen as nonmetal. The systematic name for PbO is Lead (II) oxide. Here we need to put the (II) since lead has more than one combining capacity.