Basic Science Practice Question and Answer
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Q: Hypo which is used in photography, chemically called?
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611b654e6d0fd147810fb790- 1Silver Bromidefalse
- 2sodium thio sulfatetrue
- 3sodium phosphatefalse
- 4sodium nitratefalse
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Answer : 2. "sodium thio sulfate"
Q: What is the smallest unit of a chemical compound?
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611b650edc4e2547a1c91c34- 1Atomicfalse
- 2electronfalse
- 3Protonfalse
- 4Moleculestrue
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Answer : 4. "Molecules"
Q: Gun powder is a mixture of?
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611b64b76d0fd147810fb65f- 1soil and TNTfalse
- 2sulphur, clay and charcoalfalse
- 3saltpeter, sulfur and charcoaltrue
- 4TNT and charcoalfalse
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Answer : 3. "saltpeter, sulfur and charcoal"
Q: Which substance is added to make natural rubber hard and bouncy?
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611b6423dc4e2547a1c91bd7- 1Petrol Jellyfalse
- 2sulfuric acidfalse
- 3sulfurtrue
- 4Spongefalse
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Answer : 3. "sulfur"
Q: Which of the following is essentially produced in the fermentation process?
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611b63e16d0fd147810fb343- 1ethyl alcoholtrue
- 2Methyl alcoholfalse
- 3acetic acidfalse
- 4yeastfalse
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Answer : 1. "ethyl alcohol"
Q: The marshy gas which is produced on decomposition of organic matter and is mostly found in coal mines, is the name of that gas?
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611b6363ccbc2b477b6dc0d8- 1ethanefalse
- 2Methanetrue
- 3carbon dioxidefalse
- 4carbon monoxidefalse
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Answer : 2. "Methane"
Q: Filling helium in balloons is considered more useful than hydrogen, because?
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611b631cccbc2b477b6dc0be- 1it is cheapfalse
- 2less heavyfalse
- 3more flying abilityfalse
- 4it does not form explosive mixture with airtrue
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Answer : 4. "it does not form explosive mixture with air"
Q: Which element forms the maximum number of compounds with hydrogen?
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611b62d6ccbc2b477b6dc099- 1Oxygenfalse
- 2Siliconfalse
- 3Carbontrue
- 4Nitrogenfalse
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Answer : 3. "Carbon"
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