Percentage of calcium in calcium carbonate is___________________?

Related Mcqs:

1. Sodium carbonate is produced by____________?

   A. haber process
   B. Amonia solvay process
   C. decons process
   D. lead chamber process

   Submitted by: Ayesha zameer

2. Which one of the following carbonate is water insoluble ?

   A. Na2CO3
   B. K2CO3
   C. (NH4)2CO3
   D. CaCO3

3. Dry distillation of calcium acetate results in the formation of_________________?

   A. formaldehyde
   B. acetaldehyde
   C. methane
   D. acetone

4. How many moles are in 22.2 grams of Calcium chloride, CaCl2?

   A. 0.2 moles
   B. 0.3 moles
   C. 0.4 moles
   D. 0.5 moles

   Submitted by: Muhammad Ali Kunbhar

5. Electronic Configuration of Calcium (Ca) atom may be written as________?

   A. Ne, 4p2
   B. Ar, 4s2
   C. Ne, 4s2
   D. Kr,4p2

   Submitted by: Muhammad Ali Kunbhar

6. Formaldehyde on condensation in the presence of calcium hydroxide: ______________?

   A. Formose 
   B. Fructose
   C. Maltose
   D. Xylose

   Submitted by: Said wali shah

7. The mass of decimole of electrons (NA) is___________________?

   A. 1.008 mg
   B. 0.184 mg
   C. 0.054 mg
   D. 5.4 mg

8. End name of enzyme is___________________?

   A. yl
   B. ase
   C. one
   D. al

9. The longest period in the modern periodic table is___________________?

   A. 6th
   B. 7th
   C. 2nd and 3rd both
   D. 5th

10. Allotropic form of phosphorus that is poisonous is___________________?

    A. White
    B. Red
    C. Black
    D. Violet