RSUT Chemistry 2013/2014 Past Questions

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

Which of the following is the difference between an electrolytic cell X and electrochemical cell Y

A.anode in X is -ve while anode in Y is +ve
B.in X, oxidation takes place at the anode while in Y reduction takes place at the anode
C.in X, anode is positive while in Y anode is negative
D.in X, chemical energy is converted into electrical energy while in Y electrical energy is converted into chemical energy

What mass of bromine will saturate completely 6.8g of 3-methylbut-1-yne [H = 1, C = 12, Br =80]

A.169g
B.32g
C.12g
D.24g

100cm³ of oxygen and 10cm³ of butane measured at room temperature and pressure were mixed and exploded. Determine the volume of the mixture when brought back to the original conditions of measurements.

A.125cm³
B.110cm³
C.75cm³
D.none of these

A.forms two alkaline oxides
B.is spontaneously inflammable
C.burns with a blue flame
D.conducts electricity in the molten state

Which of the following combination of reagents will react to give chlorine gas?

A.sodium chloride, conc. H₂SO₄ and Manganese (IV) oxide
B.potassium tetraoxomanganate (VII) and conc. H₂SO₄
C.potassium trioxochlorate (V) and conc. H₂SO₄
D.potassium tetraoxomanganate (VI) and conc. H₂SO₄

An element with atomic number twelve is likely to be

A.electrovalent with a valency of 1
B.electrovalent with a valency of 2
C.covalent with a valency of 2
D.covalent with a valency of 4

Which of the following compounds is NOT formed by the action of chlorine on methane?

A.CH₃CI
B.C₂H₅CI
C.CH₂Cl₂
D.CHCI₃
E.CH₄CI

Which of the following is an acid salt?

A.NaHSO₄
B.Na₂SO₄
C.CH₃CO₂Na
D.Na₂S₂
E.C₂H₅

Starch can be converted to ethyl alcohol by

A.distillation
B.fermentation
C.isomerization
D.cracking
E.osmosis

How many isomers can be formed from organic compounds with the formula: C₃H₈0

A.2
B.3
C.4
D.5
E.1