Chemistry MCQs Online Quiz Test 40

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Environmental Chemistry MCQs With Answers

Q.1: The basic hydrolysis of ethyl acetate produces———?

  1. ethanol
  2. acetic acid
  3. ethanol and acetic acid
  4. ethanol and sodium acetate

D

Q.2: Which of the following is not an ester———?

  1. amyl acetate
  2. sodium butyrate
  3. isobutyle formate
  4. octyl acetate

D

Q.3: The technique used to separate components of mixture in solid phase ?

  1. Crystallization
  2. Filtration
  3. Sublimation
  4. Solvent extraction

C

Q.4: Identification of the components of a sample is———?

  1. Quantitative analysis
  2. Qualitative analysis
  3. Stoichiometry
  4. Physical chemistry

B

Q.5: Different components of a mixture have different Rf values due to——–?

  1. Polar solvent used
  2. Combination of solvents used
  3. Distributive law
  4. Their different distribution coefficients in the solvent

D

Q.6: A process controlled by Distributive law is———?

  1. Crystallization
  2. Sublimation
  3. Solvent extraction
  4. Filtration

C

Q.7: Safe and the most reliable method of drying crystals is through———?

  1. Filter paper
  2. Vacuum desiccators
  3. Oven
  4. None of these

B

Q.8: Silica gel and alumina are used as ———?

  1. Mobile phase
  2. Mixed phase
  3. Single phase
  4. Stationary phase

D

Q.9: The solvent or mixture of solvents used for separation of compounds is called———-?

  1. Stationary phase
  2. Mobile phase
  3. Dynamic phase
  4. Static phase

B

Q.10: Sintered glass is a porous material used for ———-?

  1. absorption
  2. adsorption
  3. filtration
  4. sublimation

C