I. Write the reference number of the correct answer.

QUESTION 01

Which of the atoms (1) to (4) has the largest electron affinity?

(1) \(\ce{N}\)

(2) \(\ce{O}\)

(3) \(\ce{F}\)

(4) \(\ce{Ne}\)

QUESTION 02

Which of the ions (1) to (4) has the largest ionic radius?

(1) \(\ce{Li+}\)

(2) \(\ce{Na+}\)

(3) \(\ce{K+}\)

(4) \(\ce{Rb+}\)

QUESTION 03

Which of the molecules (1) to (4) has a linear shape?

(1)  \(\ce{H2O}\)

(2) \(\ce{H2O2}\)

(3) \(\ce{CO2}\)

(4) \(\ce{NO2}\)

QUESTION 04

Which of the substances (1) to (4) has the lowest boiling point?

(1) \(\ce{HF}\)

(2) \(\ce{HCl}\)

(3) \(\ce{HBr}\)

(4) \(\ce{HI}\)

QUESTION 05

Which of the descriptions (1) to (4) is not correct for the properties of silver and gold?

(1) Both have high electrical conductivity.

(2) Both have high thermal conductivity.

(3) Both dissolve in nitric acid.

(4) Silver is more easily oxidized than gold.

Which of reactions described in (1) to (4) is not accompanied by the generation of gas?

(1) Boiling water is added to magnesium.

(2) Hydrofluoric acid is added to silicon dioxide.

(3) Hydrochloric acid is added to calcium carbonate.

(4) Aqueous solution of sodium hydroxide is added to aluminum.

QUESTION 07

Which of the descriptions 1) to 4) is not correct for ideal gas?

(1) The pressure is inversely proportional to the temperature at a constant volume.

(2) The volume is proportional to the temperature at a constant pressure.

(3) The pressure is inversely proportional to the volume at a constant temperature.

(4) The pressure is proportional to the number of gas molecules or atoms at a constant volume and temperature.