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. Azoic dyes are mostly applied on cotton fabrics
   B. Basic dyes (e.g. amino derivatives) are applied mostly to paper
   C. Mordant dyes are applied mainly to wools
   D. None of these

3. Pick out the wrong statement ?

   A. Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80%
   B. Contact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98%
   C. 75% oleum can be produced by distillation of 20% oleum
   D. Contact process of sulphuric acid manufacture uses nickel as the catalyst

4. Pick out the wrong statement ?

   A. Cold rubber (SBR) is superior as compared to hot rubber (SBR)
   B. Polymerisation temperature can modify the properties of SBR
   C. Production of cold SBR employs lower pressure as compared to that of hot SBR
   D. None of these

5. Pick out the wrong statement ?

   A. Strongly caking coal should not be used in the Lurgi gasifier
   B. Acetylene gas cannot be used for illumination purpose
   C. Water gas is called blue gas because of the color of the flame, when it is burnt
   D. Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels

6. Pick out the wrong statement?

   A. Hard glass which is used for making laboratory glass wares is a mixture of sodium
   borosilicate and aluminium borosilicate
   B. Glass is decolorized during its manufacture by adding antimony oxide, manganese dioxide or
   arsenic oxide
   C. Ordinary glass is represented chemically by Na2O . CaO . 6SiO2
   D. Red color is imparted to glass by addition of arsenic oxide

7. 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

8. Pick out the wrong statement ?

   A. Fibrillation of fibre during paper manufacture is done to develop the strength in paper
   B. Alkali consumption in digestion/cooking of bamboo is measured in terms of permanganate
   number
   C. Bagasse fibre contains both lignin & cellulose
   D. Presence of sodium sulphate in pulp makes the pulp bleachability poor

9. Pick out the wrong statement pertaining to solvent extraction of oil. Rate of extraction__________________?

   A. Decreases with decrease of thickness of the flakes
   B. Increases with the increasing flake size keeping the flake thickness constant
   C. Increases considerably with the rise of temperature
   D. Decreases as the moisture content of flakes increases

10. Pick out the wrong statement ?

    A. High early strength cement are made from materials having high silica to lime ratio
    B. The function of gypsum in cement is to enhance its initial setting rate
    C. Acid resistant cements are known as silicate cement
    D. Major component of greyish Portland cement is tricalcium silicate