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Chemistry Mixed Test

Engineering entrance

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following is not an ore of magnesium?

  1. Magnesite
  2. Carnalite
  3. Dolomite
  4. Gypsum
  5. None of these
Question 2 Multiple Choice (Single Answer)

Which of the following statements is true regarding thixotropy?

  1. The sol reverses back into gel.
  2. The gel shrinks and releases liquid.
  3. The sol transforms into gel.
  4. The solid phase disperses into liquid.
  5. None of these
Question 3 Multiple Choice (Single Answer)

A colloidal system, in which dispersed phase is liquid and dispersion medium is solid, is said to be a

  1. gel
  2. foams and froth
  3. emulsion
  4. oil water types emulsion
  5. none of these
Question 4 Multiple Choice (Single Answer)

Sodium hydrogenperoxide is formed by the reaction between

  1. alcohol and oxone
  2. carbon monoxide and dry oxone
  3. oxone and water
  4. oxone and carbon dioxide
  5. None of these
Question 5 Multiple Choice (Single Answer)

Mutual coagulation is dependant on which one of the following?

  1. It is dependent upon the continuous motion of sol particle in colloidal system.
  2. It is dependent upon the transformation of sol into suspension medium with the help of electrolytes.
  3. It is dependent upon the ion of electrolyte, which neutralises the charge on colloidal particle.
  4. It is dependent upon the mixing of the two opposite charge of the sol.
  5. None of these
Question 6 Multiple Choice (Single Answer)

Aldol condensation will not occur in

  1. HCHO
  2. CH3CH2CHO
  3. CH3COCH3
  4. CH3CHO
  5. None of these
Question 7 Multiple Choice (Single Answer)

Which of the following is produced when at high temperature, sodium meta phosphate combines with coloured oxide?

  1. Blue mixed salt
  2. Potassium hypophosphite salt
  3. Microcosmic salt
  4. Sodium thiosulphate
  5. None of these
Question 8 Multiple Choice (Single Answer)

Which of the following pairs is liquid and shows negative deviation?

  1. Benzene and chloroform
  2. Benzene and toluene
  3. Acetone and benzene
  4. Chlorobenzene and bromobenzene
  5. None of these
Question 9 Multiple Choice (Single Answer)

The minimum boiling point of azeotrope is dependent upon which of the following points?

  1. Positive deviation from Raoult's law
  2. Negative deviation from Raoult's law
  3. Ideal solution
  4. Options (2) and (3)
  5. None of these
Question 10 Multiple Choice (Single Answer)

Allyl alcohol changes into acrolien with the help of

  1. azobisisobutyronitrile (AIBN) reagent
  2. burgess reagent
  3. the Jone's reagent
  4. tollen reagent
  5. None of these
Question 11 Multiple Choice (Single Answer)

A white precipitate is formed on adding KI to copper sulphate solution. The white precipitate is of

  1. Cu2I2
  2. CuI2
  3. Cu2S
  4. Cu2SO4
  5. None of these
Question 12 Multiple Choice (Single Answer)

Which of the following pairs of amino acids has one acidic and one basic amino acid?

  1. Arginine and glycine
  2. Aspartic acid and arginine
  3. Glycine and histidine
  4. Serine and aspartic acid
  5. None of these
Question 13 Multiple Choice (Single Answer)

Methyl alcohol is prepared industrially from

  1. C2H5OH
  2. CH3COOH
  3. CO + H2
  4. CH3COCH3
  5. None of these
Question 14 Multiple Choice (Single Answer)

Which of the following compounds is formed when aqueous solution Na2SO3 boils with flower of sulphur?

  1. Sodium tetrathionate
  2. Sodium sulphide
  3. Sodium pentasulphide
  4. Sodium thiosulphate
  5. None of these
Question 15 Multiple Choice (Single Answer)

Rinman's green is obtained by the combination of which of the following salts?

  1. Zinc and sodium hydroxide
  2. Zinc and copper sulphate
  3. Zinc chloride and sodium bicarbonate
  4. Cobalt nitrate and zinc oxide
  5. None of these
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