Which one is a pure carbon?

Related Mcqs:

1. In primary alkyl halides the halogen atom is attached to a carbon which is further attached to how many carbon atoms__________________?

   A. two
   B. three
   C. one
   D. four

2. The carbon-carbon bond strength is maximum in__________?

   A. CH3CH3
   B. CH2=CH2
   C. Benzene
   D. Cyclohexane

   Submitted by: Muhammad Ali Kunbhar

3. Pure metal__________________?

   A. corrode slowly
   B. corrode rapidly
   C. does not corrode easily
   D. none of these

4. Which one of following is not a property of pure quartz ?

   A. Coloured solid
   B. Brittle
   C. Hard
   D. All of above

5. The PH of pure water at 25°C, kw=1×10-4____________?

   A. 0
   B. 7
   C. 14
   D. None of above

   Submitted by: Muhammad Ali Kunbhar

6. Hydrogen resembles with carbon because of having________________?

   A. Same number of electrons in the valence shell
   B. Similar physical state
   C. Remarkable reducing properties
   D. Homovalent (show same valency)

7. Carbon in wrought iron is present as_________?

   A. Silicon carbide
   B. Iron carbide
   C. Graphite
   D. Partly as iron carbide and partly as graphite

   Submitted by: Muhammad Ali Kunbhar

8. In a molecule of carbon monoxide, what are the formal charges on the two atoms?

   A. Carbon=0, Oxygen=0
   B. Carbon= +1, Oxygen= -1
   C. Carbon= -1, Oxygen= +1
   D. Carbon=0, Oxygen= -1

   Submitted by: Muhammad Ali Kunbhar

9. Compound containing two halogen atoms on two adjacent carbon atoms are called as ___________?

   A. Glycols
   B. Vicinal dihalides
   C. Geminal dihalides
   D. Diols

   Submitted by: Aamir khan Hullio

10. In Aldehydes and Ketones, carbon of carbonyl group is ____________?

    A. sp³ hybridised
    B. sp² hybridised 
    C. sp hybridised
    D. Unhybridised

    Submitted by: Aamir khan Hullio