Chemistry General Knowledge Questions Practice Question and Answer
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Q: Which of the following methods is best suited for the separation of a mixture containing naphthalene and benzoic acid
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63c8f8d3bdbddb32fda0eb03- 1Crystallizationfalse
- 2Chromatographyfalse
- 3Sublimationtrue
- 4Distillationfalse
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Answer : 3. "Sublimation"
Q: Water in case of HCl acts as a/an ___________, in case of ammonia acts as a/an ________
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63c7c8d3be373f6c9546a490- 1Base, basefalse
- 2Base, acidtrue
- 3Acid, basefalse
- 4Acid, acidfalse
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Answer : 2. "Base, acid "
Q: Identify a conjugate pair in the equation:
NH3 + H2O ⇌ NH4+ + OH–.
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63c7c0321e8e3f3e1a35f224NH3 + H2O ⇌ NH4+ + OH–.
- 1Ammonia and waterfalse
- 2Water and hydroxide iontrue
- 3Ammonium ion and hydroxide ion.false
- 4Ammonia and hydroxide ionfalse
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Answer : 2. "Water and hydroxide ion"
Q: Lewis concept does explain the behaviour of __________
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63c7bc051c47ef334bdd8c98- 1Basesfalse
- 2Saltsfalse
- 3Protonic acidstrue
- 4Amphoteric substancesfalse
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Answer : 3. "Protonic acids"
Q: Which of the following substances cannot act as both acid as well as a base?
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63c7b87a7efeed32fc1cb907- 1Amphoteric substancefalse
- 2Amphiprotic substancefalse
- 3Ampholytefalse
- 4Photophilictrue
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Answer : 4. "Photophilic"
Q: A proton donor is a ____________ substance.
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63c7abc48731ac33279ac0bd- 1Proton genictrue
- 2Photophilicfalse
- 3Amphotericfalse
- 4Amphiproticfalse
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Answer : 1. "Proton genic"
Q: HCl is an Arrhenius ___________
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63c7aabfb338bc336f08c023- 1Acidtrue
- 2Basefalse
- 3Saltfalse
- 4Waterfalse
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Answer : 1. "Acid"
Q: Which of the following is not a lewis acid?
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63c7a61fbdbddb32fd9cc85f- 1aluminum chloridefalse
- 2sodium ionfalse
- 3Sulphur tetrafluoridefalse
- 4hydroxide iontrue
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Answer : 4. "hydroxide ion"
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