Chemistry General Knowledge Questions Practice Question and Answer
8 Q: Nowadays yellow lamps are being used in abundance in street lights. Which of the following gas are used in these lamps?
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5f745b0ff66ef56de842ca1c- 1Sodiumtrue
- 2Neonfalse
- 3Hydrogenfalse
- 4Nitrogenfalse
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Answer : 1. "Sodium"
Q: Washing soda is the common name for
1616 15edef8088c4c964f73d377df
5edef8088c4c964f73d377df- 1Calcium carbonatefalse
- 2Sodium carbonatetrue
- 3Calcium bicarbonatefalse
- 4Sodium bicarbonatefalse
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Answer : 2. "Sodium carbonate"
Q: Kerosene oil rises up in the wick of lantern because of
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5f43626009e4377de92e96d0- 1The gravitational pull of the wickfalse
- 2Surface tensiontrue
- 3Buoyant force of airfalse
- 4Diffusion of the oil through the wickfalse
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Answer : 2. "Surface tension"
Q: What is the systematic name of PbO? 1342 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-
889 05f72f3dea921aa16e68288a7
5f72f3dea921aa16e68288a7- 1Naphthalenetrue
- 2Etherfalse
- 3Benzoic acidfalse
- 4None of thesefalse
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