Chemistry Practice Question and Answer
8Q: What is the systematic name of PbO? 1348 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?
1309 05ed600125ccf7008ed8ceeb9
5ed600125ccf7008ed8ceeb9- 1Hydrogenfalse
- 2Carbon Dioxidetrue
- 3Heliumfalse
- 4Nitrogenfalse
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Answer : 2. "Carbon Dioxide"
Q: A pungent small often present near the urinals is due to
1306 05ef1b1187fed557ba2abd940
5ef1b1187fed557ba2abd940- 1Ammoniatrue
- 2Ureafalse
- 3Sulphur- di-oxidefalse
- 4Chlorinefalse
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Answer : 1. "Ammonia "
Q: Lightest metal is___
1238 05f7465f1a921aa16e68bd6a5
5f7465f1a921aa16e68bd6a5- 1Potassiumfalse
- 2Lithiumtrue
- 3Sodiumfalse
- 4Aluminumfalse
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Answer : 2. "Lithium"
Q: Which of the following is not nucleon?
1230 05fe1bfc8ce32c8585c73a73c
5fe1bfc8ce32c8585c73a73c- 1Protonfalse
- 2Neutronfalse
- 3Both (A) and (B)false
- 4Positrontrue
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Answer : 4. "Positron "
Q: What is the mass number of an element, the atom of which contains two Protons, two neutrons and two electrons?
1209 05ee35e7455d51a0f6482cd3c
5ee35e7455d51a0f6482cd3c- 12false
- 24true
- 36false
- 48false
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Answer : 2. "4 "
Q: Which of the following is not a normal salt?
1203 05fe9a5d9755fc73bd0795223
5fe9a5d9755fc73bd0795223- 1$$ {Na_2SO_4}$$false
- 2$$ {NaHSO_4}$$true
- 3$$ {Na_3PO_4}$$false
- 4$$ {CaSO_4}$$false
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Answer : 2. "$$ {NaHSO_4}$$"
Q: Which of the following is the softest?
1200 05eeb1496eee45c3b837b0312
5eeb1496eee45c3b837b0312- 1Sodiumtrue
- 2Copperfalse
- 3Ironfalse
- 4Aluminumfalse
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