Which one of the following represents a chemical change_________?

Related Mcqs:

1. The distance of longitude represents how many minutes difference in time?

   A. 10 minutes
   B. 4 minutes
   C. 15 minutes
   D. 1 minute

   Submitted by: Mansoor Ul Haque

2. Laughing gas has chemical composition of following two elements ?

   A. Nitrogen + Hydrogen
   B. Nitrogen + Carbon
   C. Nitrogen + Oxygen
   D. Oxygen + Carbon
   E. None of these

3. Which of the following is not a chemical reaction ?

   A. Burning of coal
   B. Conversion of water into steam
   C. Digestion of food
   D. Burning of paper

   Submitted by: Mansoor Ahmed Suhag

4. The chemical name of quartz is:

   A. Silicon Dioxide
   B. Stannous Oxide
   C. Aluminium Oxide
   D. None

5. Chemical Name of Dry Ice?

   A. Solid Carbon Dioxide
   B. Calcium Carbon
   C. A&B
   D. Sodium Oxide

   Submitted by: Farman Aijaz

6. Retinol is the chemical name of?

   A. Vitamin A
   B. Vitamin B
   C. Vitamin C
   D. Vitamin K

   Submitted by: Qamer

7. What is the Chemical formula of Zinc Hydroxide _________ ?

   A. Zn(OH)2
   B. ZNO2
   C. Zn2(OH)3
   D. ZnOH

   Submitted by: Rashid Mehmood

8. Chemical formula for Water is _______ ?

   A. NaAlO2
   B. H2O
   C. Al2O3
   D. CaSiO3

   Submitted by: Rashid Mehmood

9. What is chemical symbol for Tungsten?

   A. Z
   B. T
   C. Tn
   D. W

   Submitted by: Munwar Ali Sohu

10. What is the chemical name of Oil of Vitriol?

    A. Hydrochloric Acid
    B. Sulphuric Acid
    C. Nitric Acid
    D. Muriatic Acid

    Submitted by: Shaan Ahmed