Chemistry Practice Question and Answer
8 4 Q:
60828f7fbfeec334bc88fc0b 4 Q:
61275c2293f02206607ea973 Answer : 1. "Sodium"
4 Q:
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5ed600125ccf7008ed8ceeb9 4 Q:
5f06e6dfb13c2d244adae1f1 4 Q:
5efc069ee824154f4027ad4b 4 Q:
5ee85d18c9ddb00b8bda9adc 4 Q:
5eeb1496eee45c3b837b0312
Q: Which of the below allotropes of carbon is in the form of geodesic globe?
1783 060828f7fbfeec334bc88fc0b
60828f7fbfeec334bc88fc0b- 1Fullerenetrue
- 2Carbon nanotubefalse
- 3Graphitefalse
- 4Diamondfalse
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Answer : 1. "Fullerene "
Q: Which metal can be cut with a knife among sodium, lithium, calcium and nickel?
1766 061275c2293f02206607ea973
61275c2293f02206607ea973- 1Sodiumtrue
- 2Lithiumfalse
- 3calciumfalse
- 4allfalse
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Answer : 1. "Sodium"
Explanation :
Alkali metals (lithium, sodium, potassium) are so soft that they can be cut with a knife. The freshly cut surface is a shiny, silver colour, but this tarnishes quickly to a dull grey as the metal reacts with oxygen and water in the air.
Q: Percentage of lead in lead pencil is:
1745 05ed62769436d8a49583c61d8
5ed62769436d8a49583c61d8- 1zerotrue
- 220false
- 380false
- 47false
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Answer : 1. "zero "
Q: Which gas is mostly present in Venus atmosphere?
1737 05ed600125ccf7008ed8ceeb9
5ed600125ccf7008ed8ceeb9- 1Hydrogenfalse
- 2Carbon Dioxidetrue
- 3Heliumfalse
- 4Nitrogenfalse
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Answer : 2. "Carbon Dioxide"
Q: Which one of the following polymer is used in making bullet - proof vest?
1707 05f06e6dfb13c2d244adae1f1
5f06e6dfb13c2d244adae1f1- 1Teflonfalse
- 2Polyurethanefalse
- 3Bakelitefalse
- 4Polyamidetrue
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Answer : 4. "Polyamide "
Q: Which one of the following is also known as ' wood spirit’s?
1690 05efc069ee824154f4027ad4b
5efc069ee824154f4027ad4b- 1Methyl alcoholtrue
- 2Ethyl alcoholfalse
- 3Ethylene glycolfalse
- 4Glycerolfalse
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Answer : 1. "Methyl alcohol "
Q: Which of the following is the most common kidney stone-forming compound?
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5ee85d18c9ddb00b8bda9adc- 1Calcium oxalatetrue
- 2Magnesium oxidefalse
- 3Sodium bicarbonatefalse
- 4Magnesium citratefalse
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Answer : 1. "Calcium oxalate"
Q: Which of the following is the softest?
1656 05eeb1496eee45c3b837b0312
5eeb1496eee45c3b837b0312- 1Sodiumtrue
- 2Copperfalse
- 3Ironfalse
- 4Aluminumfalse
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Answer : 1. "Sodium"
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