Chemistry General Knowledge Questions Practice Question and Answer
8 Q: Which among the following noble gas has highest molar mass?
2912 05f083354429a37679ec22f49
5f083354429a37679ec22f49- 1Krfalse
- 2nefalse
- 3Arfalse
- 4Xetrue
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Answer : 4. "Xe"
Q: Permanent hardness of water may be removed by the addition of
1389 05edefcd28c4c964f73d38693
5edefcd28c4c964f73d38693- 1sodium carbonatetrue
- 2alumfalse
- 3potassium permanganatefalse
- 4limefalse
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Answer : 1. "sodium carbonate"
Q: What is the acid found in bees?
758 05eeb1221ad25df5a63256400
5eeb1221ad25df5a63256400- 1Formic acidtrue
- 2Acetic acidfalse
- 3Carbolic acidfalse
- 4Oxalic acidfalse
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Answer : 1. "Formic acid"
Q: The atoms, in which the number of Protons is same but the number of neutrons is different, are known as –
1007 05f0ecf31b6738d790d13d1ea
5f0ecf31b6738d790d13d1ea- 1Isotonesfalse
- 2Isotopestrue
- 3Isobarsfalse
- 4Isomersfalse
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Answer : 2. "Isotopes"
Q: What is the systematic name of PbO? 1166 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?
1166 05ed600125ccf7008ed8ceeb9
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?
932 05eeadf0fad25df5a63247e87
5eeadf0fad25df5a63247e87- 14false
- 26false
- 33true
- 42false
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Answer : 3. "3"
Q: In atom, neutron was discovered by –
745 05f0ed5dfdcdb5f61f5c4c220
5f0ed5dfdcdb5f61f5c4c220- 1Rutherfordfalse
- 2Newtonfalse
- 3J.J . Thomsonfalse
- 4Chadwicktrue
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