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...