Pick out the endothermic reaction out of the following ?

Related Mcqs:

1. Which of the following is an endothermic reaction ?

   A. Absorption of SO3 in 98% H2SO4
   B. C + H2O = CO + H2
   C. Thermal dissociation of iron pyrites
   D. Both B. and C.

2. Pick out the exothermic reaction out of the following ?

   A. C + H2O = CO + H2
   B. CaC2 + H2O = Ca(OH)2 + C2H2
   C. MgCO3 = MgO + CO2
   D. All (A), B. and (C)

3. Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at _____________ °C ?

   A. 15-30
   B. 90-100
   C. 250-300
   D. < 0

4. Reaction of an alcohol with organic acid is called the ________________ reaction?

   A. Saponification
   B. Esterification
   C. Neutralisation
   D. Acidification

5. The gasification reaction represented by, C + H2O = CO + H2, is a/an _________________ reaction?

   A. Exothermic
   B. Endothermic
   C. Catalytic
   D. Autocatalytic

6. Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction ?

   A. Oxidation of Na+ ions
   B. Oxidation of Cl- ions
   C. Reduction of Na+ ions
   D. Reduction of Cl- ions

7. 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%

8. 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

9. 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

10. 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