Chemistry Practice Question and Answer
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Q: Fe has 26 protons in its nucleus. What are the number of electrons in Fe2+ (II) ion?
595 062f32f6209a97851b630ae7b
62f32f6209a97851b630ae7b- 124true
- 226false
- 328false
- 413false
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Answer : 1. "24"
Q: What is the percentage of carbon in steel?
594 0612759cdb05363065a00450e
612759cdb05363065a00450e- 13 %false
- 24 %false
- 32 %true
- 45 %false
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Answer : 3. "2 %"
Q: Which metal reacts with water?
594 061275b3bb05363065a00517c
61275b3bb05363065a00517c- 1goldfalse
- 2Potassiumtrue
- 3Silverfalse
- 4Leadfalse
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Answer : 2. "Potassium"
Q: NaHCO3 is chemical formula for ___________.
594 062de6d24313eb40eb89fc5a4
62de6d24313eb40eb89fc5a4- 1Boraxfalse
- 2Vinegarfalse
- 3Limefalse
- 4Baking sodatrue
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Answer : 4. "Baking soda"
Q: Which of the following is used as raw material for the manufacture of rayon?
584 06389c46c9ebad6607b7f78db
6389c46c9ebad6607b7f78db- 1Coalfalse
- 2Petroleumfalse
- 3Cellulosetrue
- 4Plasticfalse
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Answer : 3. "Cellulose"
Q: _______ expansion makes the Eiffel Tower taller during summers.
581 062bec77225fd051a65657af2
62bec77225fd051a65657af2- 1Gravitationalfalse
- 2Gradientfalse
- 3Chemicalfalse
- 4Thermaltrue
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Answer : 4. "Thermal"
Q: What is the more common name for solid carbon dioxide?
579 062bea9681d322d793f52a911
62bea9681d322d793f52a911- 1Quick Silverfalse
- 2Epsomfalse
- 3Potashfalse
- 4Dry Icetrue
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Answer : 4. "Dry Ice"
Q: Which of the given metals cannot be extracted using smelting?
578 062f10b533342ab11842d1eb2
62f10b533342ab11842d1eb2- 1Fefalse
- 2Altrue
- 3Znfalse
- 4Pbfalse
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Answer : 2. "Al "
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