Formula of Chile saltpetre is__________________?

Related Mcqs:

1. A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula?

   A. C2H6O
   B. C6H18O3
   C. C6H12O6
   D. C2H5O

   Submitted by: Muhammad Ali Kunbhar

2. A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound?

   A. C2H4
   B. C3H6
   C. C4H8
   D. C5H10

   Submitted by: Muhammad Ali Kunbhar

3. The formula of starch is__________________?

   A. C12H22O11
   B. C6H10O5
   C. (C6H10O5)n
   D. C6H12O6

4. Which of the following is the formula of chrome red ?

   A. Pb3 O4
   B. 2Pb CO3 – Pb (OH)2
   C. Pb Cr O4 – Pb (OH)2
   D. Pb2O

5. The number of formula units in 29.25g of common salt_________________?

   A. 6.022 x 1023
   B. 3.01 x 1023
   C. 2 x NA
   D. 4 x 6.022 x 1023

6. What is the molecular formula of Benzenetriozonide ?

   A. C6H6O9
   B. C6H5O8
   C. C6H5O9
   D. C6H6O6

7. General formula of alkyne is______________?

   A. CnH2n + 2
   B. CnH2n – 2
   C. CnH2n
   D. CnH2n + 2

8. What is the molecular formula for Nitric acid ________ ?

   A. HNO2
   B. HNO3
   C. HN2O2
   D. H2NO4

   Submitted by: Rashid Mehmood

9. The molecular formula for cholesterol is C27 H46 O. What are the degrees of unsaturation for this compound?

   A. 5
   B. 6
   C. 7
   D. 8

   Submitted by: Muhammad Ali Kunbhar

10. The Chemical Formula of Sand is___________?

    A. Si2O3
    B. SiO2
    C. Al2O3
    D. Sr2O

    Submitted by: Naintara Mustafa