If volumetric analysis methyl orange indicator is used when_________?

Related Mcqs:

1. Methyl alcohol is not used as___________________?

   A. a solvent
   B. an anti freezing agent
   C. a substitute for petrol
   D. for denaturing of ethyl alcohol

2. Formalin consists of mixture of formaldehyde methyl alcohol and water Percentage of water in it is________________?

   A. 60%
   B. 50%
   C. 52%
   D. 8%

3. Alkanes containing a methyl group on main chain at 2nd carbon are called________________?

   A. iso-alkane
   B. normal-alkane
   C. neo-alkane
   D. branched-alkane

4. Which is methyl cyanide_________________?

   A. CH3NH2
   B. CH3NO2
   C. CH3CN
   D. CH2 = CH – CN

5. Methyl alcohol is not used__________________?

   A. As a solvent
   B. As an antifreezing agent
   C. As a substitute for petrol
   D. For denaturing of ethyl alcohol

6. Methyl radical is ___________?

   A. Sp3 hybrid having 8 electrons
   B. Sp2 hybrid having 6 electron
   C. sp2 hybrid having 7 electron
   D. Sp hybrid having linear geometry

   Submitted by: Aneela shabbir

7. Which of the following has orange flavour__________________?

   A. isobutyl formate
   B. octyl acetate
   C. ethyl butyrate
   D. amyl lactate

8. The best indicator for titrating HCl with NH4OH is: _________?

   A. methyl Orange
   B. litmus
   C. phenol red   
   D. phenopthalein

   Submitted by: Said wali shah

9. Branch of chemistry that deals with the complete qualitative and quantitative analysis of a substance is___________________?

   A. Stoichio chemistry
   B. Physical chemistry
   C. Analytical chemistry
   D. Quantum chemistry

10. Which of the following oxides of iodine is used for quantitative analysis of CO ?

    A. I2O4
    B. I4O2
    C. I2O5
    D. All are equally useful