RSUT Chemistry 2020/2021 Past Questions

Practice each question, then open it to see the full details.

The functional group represented in the compound CH³CH²CH²CH²CH=O is

A.Alkanone
B.Alkanal
C.Alkanol
D.Alkanoate

What happens to the conductivity of an electrolyte as its concentration reduces?

A.increases
B.decreases
C.is unaffected
D.becomes resistivity.

What volume of 0.50 M H₂SO₄ will exactly neutralize 20cm₃ of 0.1M NaOH solution?

A.2.0cm³
B.5.0cm³
C.6.8cm³
D.8.3cm³

A saturated solution of silver trioxocarbonate (IV), was found to have concentration of $1.30 x 10^5 mol dm^-3$. The solubility product of trioxocarbonate (IV) is

A.8.79 x 10^-15
B.1.69 x 10^-10
C.1.82 x 10^-10
D.9.84 x 10^-10

Oxygen is extracted from water by

A.displacement reaction
B.oxidation reaction
C.reduction reaction
D.decomposition reaction

The number of moles present in 1kg of solvent is called its

A.molality
B.molarity
C.normality
D.formality

Catalytic hydrogenation of alkenes produces

A.C_nH_2n+1OH
B.C_nH_2n+1
C.C_nH_2n+2
D.C_n(H₂O)_y

Which of these techniques are available for isolation and purification of compound

A.recrystalization
B.halogenation
C.homogination
D.hexagonation

An element X₁ forms a volatile hydride XH₃ with a vapour density of 17.0. The relative atomic mass of X is

A.34.0
B.31.0
C.20.0
D.14.0