Chemistry Practice Question and Answer
8 4 Q:
64bfc857a2d4dcaf044da339 Answer : 4. "Oxygen"
4 Q:
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6439228372ca731a99323e96 4 Q:
63c8f8d3bdbddb32fda0eb03 4 Q:
638de03d34f83f14728dfb2f 4 Q:
61275ab6dbe92e068b91060b 4 Q:
6258f7b7f5fb9a2759f0c057 4 Q:
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Q: Which of the following elements is NOT a component of baking soda?
574 164bfc857a2d4dcaf044da339
64bfc857a2d4dcaf044da339- 1Hydrogenfalse
- 2Calciumfalse
- 3Sodiumfalse
- 4Oxygentrue
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Answer : 4. "Oxygen"
Explanation :
1. Which of the following calcium elements is not a component of baking soda?
2. The chemical formula of baking soda is NaHCO3, which is composed of four elements sodium, hydrogen, carbon and oxygen.
3. Baking soda is an alkaline substance used as a leavening agent in baking.
Q: A strong acid has a ______________
571 063c7b6411e8e3f3e1a35cf4b
63c7b6411e8e3f3e1a35cf4b- 1Weak conjugate acidfalse
- 2Weak conjugate basetrue
- 3Strong conjugate basefalse
- 4Strong conjugate acidfalse
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Answer : 2. "Weak conjugate base"
Q: Starch in potatoes reacts with _____, turning to a blue colour.
568 16439228372ca731a99323e96
6439228372ca731a99323e96- 1fluorinefalse
- 2Brominefalse
- 3Iodinetrue
- 4Chlorinefalse
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Answer : 3. "Iodine "
Q: Which of the following methods is best suited for the separation of a mixture containing naphthalene and benzoic acid
560 063c8f8d3bdbddb32fda0eb03
63c8f8d3bdbddb32fda0eb03- 1Crystallizationfalse
- 2Chromatographyfalse
- 3Sublimationtrue
- 4Distillationfalse
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Answer : 3. "Sublimation"
Q: The helical structure of protein is stabilized by
558 0638de03d34f83f14728dfb2f
638de03d34f83f14728dfb2f- 1Depeptide bondsfalse
- 2Hydrogen bondstrue
- 3Ester bondsfalse
- 4Peptide bondsfalse
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Answer : 2. "Hydrogen bonds"
Q: Which of these non-metals is shiny?
557 061275ab6dbe92e068b91060b
61275ab6dbe92e068b91060b- 1Carbonfalse
- 2Iodinefalse
- 3Sulfurfalse
- 4Brominetrue
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Answer : 4. "Bromine"
Q: Which of the following is an oxidising agent ?
553 06258f7b7f5fb9a2759f0c057
6258f7b7f5fb9a2759f0c057- 1KMnO4false
- 2K2 Cr2 07false
- 3HNO3false
- 4All of the abovetrue
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Answer : 4. "All of the above "
Q: The brand name Teflon represents which polymer?
552 06389c0e39ebad6607b7f646d
6389c0e39ebad6607b7f646d- 1Polystyrenefalse
- 2Polypropylenefalse
- 3Polytetrafluoroethylenetrue
- 4Polyethylene terephthalatefalse
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Answer : 3. "Polytetrafluoroethylene"
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