PART - 1 CH - 4 Carbon and Its Compounds — Science STD 10 — Question

By considering their position in the periodic table, which one of the following elements would you expect to have maximum metallic characteristics ? Ga Ge As Se Be

Define term : Saturated carbon compounds

Name a greenhouse gas. What happens when its amount increases in the atmosphere?

Calculate the molarity of an aqueous solution prepared by dissolving 2 mol of HCl in water to form 500 mL solution.

Give the function of medulla.

Which theory tells us how life evolved from simple to more complex forms?

Mention the general formula of unsaturated alkyne compounds.

Translate the statements into chemical equations and then balance them:
Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.

Reactants A and B react together and forms zinc chloride and hydrogen gas. Identify A and B. Write the chemical equation.