FUTO Chemistry 2020/2021 Past Questions

What is the valence shell electron configuration of the element with atomic number 17?

If 30 cm^{3 of a gas at 50°C is warmed to 80°C at a fixed pressure, the fractional increase in volume is}

The radioactive emission with the least ionization power is

24g of magnesium reacts with•dilute hydrochloric acid. Calculate the volume of hydrogen gas evolved at s.t.p.? [Mg=24, Molar volume of gas at s.t.p. = 22.4 dm3]

Calculate the solubility in moldm. of 20g sodium hydroxide dissolved in 100g of water at 35°C. [Na=23, H=1, 0=16]

The compound that makes palm wine taste sour after exposure to the air for few days is

A gaseous mixture contains 0.256g of hydrogen and 2.0g of oxygen. The mole ratio of hydrogen to oxygen in the mixture is [H = 1.0; O = 16.0]

The following atoms of carbon $${{^{12}_6C}, {^{13}_6C} and {^{14}_6C}}$$ can be described as

The bonds in crystalline ammonium chloride are

A substance L reacts with $${NH_4NO_3}_{(aq)}$$ to generate ammonia gas. L is likely to be