Acids, Bases and Salts — Science STD 10 — Question

A salt whose aqueous solution will have a pH of more than 7 will be:

Which of the following molecular formula corresponds to ethylbutanoate ester?

Which of the following is an iron ore?

1. Cinnabar.
2. Calamine.
3. Haematite.
4. Rock salt.

A student is testing water to know which is best for cleansing purposes with soaps. He would find that the cleansing action of soaps is best when he uses water obtained from.

Which compound has an addition reaction with - chlorine?

Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions?

A metal less reactive and another metal more reactive than hydrogen are:

1. Aaluminium and lead.
2. Iron and magnesium.
3. Copper and tin.
4. Copper and mercury.

The products of chlor-alkali process are:

1. NaCl, Cl₂ and H₂
2. H₂, Cl₂ and NaOH
3. Cl₂, Na₂CO₃ and H₂O
4. NaOH, Cl₂ and HCl

The most abundant metal in the earth’s crust is:

Which of the following cannot exhibit isomerism?

1. C₄H₁₀
2. C₅H₁₂
3. C₃H₈
4. C₆H₁₄