Carbon and its ...

Which of the following statements is true with regard to hydrogen? i. Hydrogen reacts to attain a duplet of electrons in its K shell. ii. Hydrogen always forms a single covalent bond. iii. Hydrogen can form a single and a double covalent bond.

Which of the following compounds of carbon does not consist of ions?

Which of the following statements is not true? i. In the earth's crust carbon is present in the form of minerals. ii. In the atmosphere very less amount of carbon is present. iii. In the earth's crust very large amount of carbon is present.

Two compounds 'A' and 'B' are isomers. Which of the following statements, regarding A and B, is true? i. Both will have same IUPAC name ii. Both will have same structure iii. Both are hydrocarbons iv. Both have same molecular formula

Which of the following compounds is an unsaturated hydrocarbon? i. Propane ii. Benzene iii. Acetylene

Which of the following bonds is very strong and hence very stable?

Which of the following statements is not true regarding alkenes?

Which of the following is the molecular formula of cyclobutane?

Which of the following statements about graphite and diamond is true?

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that