Which of the following is true about saturated hydrocarbon?

I A compound that contains hydrogen atoms and carbon atoms only.

II A compound that contains hydrogen atoms, carbon atoms and other non-metal atoms.

III A compound that contains only carbon-carbon single bonds.

IV A compound that contains carbon-carbon double bonds.

Which of the following are the examples of unsaturated hydrocarbon?

Diagram shows the structural formula of compound P.

What is the percentage of carbon by mass in compound P?

One mole of alkane is completely burnt in excess oxygen gas. Which alkane produces carbon dioxide gas and water in the mole ratio of 3:4?

Diagram shows the structural formulae of two organic compounds, X and Y.

Which property belongs to both compounds?

Which of the following is an unsaturated hydrocarbon?

Which of the following are the physical properties of C2H5OH?

I High melting point and boiling point

II Colourless liquid with sharp smell

III Insoluble in water

IV Highly flammable

Diagram shows the apparatus set-up for a reaction. Name this reaction.

Which of the following chemical reactions are correctly matched?

I Frying egg - endothermic reaction

II Photosynthesis - exothermic reaction

III Dissolving detergent powder in water - exothermic reaction

IV Acid-alkali neutralisation - endothermic reaction

Which reaction is exothermic reaction?