Chemistry General Knowledge Questions Practice Question and Answer
8 Q: Baking soda is
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5f04358ed996064ceba911d9- 1Sodium Sulphatefalse
- 2Sodium Hydroxidefalse
- 3Sodium Chloridefalse
- 4Sodium Bicarbonatetrue
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Answer : 4. "Sodium Bicarbonate "
Q: The atomic mass of an element has the maximum number of electrons in its second orbit—
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5f86a83ddcf12a01a1418fb3- 12false
- 28true
- 310false
- 416false
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Answer : 2. "8"
Q: What is the systematic name of PbO? 1345 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.
Q: Which gas is mostly present in Venus atmosphere?
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5ed600125ccf7008ed8ceeb9- 1Hydrogenfalse
- 2Carbon Dioxidetrue
- 3Heliumfalse
- 4Nitrogenfalse
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Answer : 2. "Carbon Dioxide"
Q: How many categories of elements are divided on the basis of properties?
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5eeadf0fad25df5a63247e87- 14false
- 26false
- 33true
- 42false
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Answer : 3. "3"
Q: In atom, neutron was discovered by –
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5f0ed5dfdcdb5f61f5c4c220- 1Rutherfordfalse
- 2Newtonfalse
- 3J.J . Thomsonfalse
- 4Chadwicktrue
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Answer : 4. "Chadwick "
Q: Which of the following is purified by Elevation method-
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5f72f3dea921aa16e68288a7- 1Naphthalenetrue
- 2Etherfalse
- 3Benzoic acidfalse
- 4None of thesefalse
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Answer : 1. "Naphthalene"
Q: The catalyst is a substance through which the rates of chemical reactions ________.
780 06082b13391a9f43a97b71fca
6082b13391a9f43a97b71fca- 1Decreasesfalse
- 2Changesfalse
- 3Increasestrue
- 4None of thesefalse
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