Pick out the wrong statement?

Related Mcqs:

1. Pick out the wrong statement ?

   A. Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye
   respectively
   B. Protein catalysts are called enzymes
   C. The rate of chemical reaction is independent of the concentration of reactants at high
   concentration of enzymes
   D. Total sugar content in molasses is about 10%

2. Pick out the wrong statement?

   A. Dry process is used for the manufacture of cement, when the raw material is blast furnace slag
   B. Portland cement is made employing wet process
   C. Gypsum is added to Portland cement to lengthen its setting time
   D. None of these

3. Pick out the wrong statement. Iodine value of an oil or fat is________________?

   A. The number of grams of iodine taken up by 100 gm of oil or fat
   B. A measure of its unsaturation
   C. Helpful in findings its adulteration & its suitability for making soap
   D. Independent of the type of oil, whether it is drying or non-drying

4. Pick out the wrong statement ?

   A. Kraft method of pulp manufacture can process all types of fibrous raw materials
   B. Digestion time for bagasse is less than that for wood base materials
   C. Both temperature and pressure in the digestor is less in case of the sulphite method as
   compared to that in the sulphate method
   D. None of these

5. Pick out the wrong statement ?

   A. Catalytic hydrogenation of carbon monoxide produces methyl alcohol
   B. In nylon-6, the number 6 represents the total number of carbon atoms in the ring
   C. Raw materials for DDT manufacture are benzene and chlorine
   D. Ethanolamines are produced by using ammonia and ethylene oxide as raw material

6. Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have___________________?

   A. High electrical insulation properties
   B. Sharp melting points
   C. Low co-efficient of thermal expansion
   D. Compressive strength much greater than their tensile strengths

7. Pick out the wrong statement ?

   A. Pasteurisation of milk involves moderate heating followed by cooling
   B. Bakeries and breweries make use of yeasts
   C. Enzyme is a complex nitrogenous compound
   D. Oils and fats are alkaloids

8. Pick out the wrong statement pertaining to nitric acid ?

   A. About 90% of nitric acid is manufactured by Ostwald’s process
   B. It is a strong mono basic acid which reacts with almost all the metals except noble metals
   C. Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
   D. Arc process of nitric acid manufacture is economical as compared to Ostwald’s process

9. Pick out the wrong statement?

   A. Eosin requirement in tallow soap is about 40-50% which fastens the lather formation, softens
   the hard soaps and increases its cleansing action
   B. Soap powder is prepared by mixing soap with hydrated sodium carbonate
   C. Detergents differ from soaps in their action in hard water
   D. Tarnish inhibitor (e.g., Benzotriazole) is added in soap to facilitate the removal of stains due
   to tea, blood etc

10. Pick out the wrong statement ?

    A. DDT is manufactured by the condensation of chlorobenzene with chloral at 30°C in presence
    of oleum, which is a highly exothermic reaction
    B. Chloral is obtained by the chlorination of ethyl alcohol
    C. Insecticides acting on the insects through the respiratory system are called fumigants
    D. Benzene hexachloride is not a contact insecticide