Chemistry
ical
Chemistry
1.which of the following pairs of compound will react? iC3H6+Br2 iiC3H6+Cl2 in sunlight iiiC3H6+H2O in the presence of sulphuric acid ivC3H6+H2O in the presence of concentrated sulphuric acid
a.i
b.i,iii
c.i,ii,iii
d.all
2.liqiud y reacts with magnesium metal to produce a gas that burns with a pop sound when a flaming wooden splint is placed near it.liqiud y is most likely a compound that has the formula
a.c2h5oh b.hcooh c.h3cooch3 d.c6h14
3.a compound p has the following characteristics:
-reacts with sodium carbonate to release a gas that clouds lime water
-reacts with compound q to form a fragrant liquid
a.p-sulphuric acid q-ethyl ethanoate
b.p-ethanoic acid q-ethyl ethanoate
c. p-ethanoic acid q-ethanol
d. p-ethanol q- ethanoic acid
4.element-proton no. e-6 g-8 j-9 l-11 m-12 which of the element pair from a compound which is insoluble in water.?
a.e-j b.j-l c.g-l d.g-m
5.which of the following staments are correct?
i.pent-2-ene decolourises bromine water but pent-3-ene does not. ii.both have the same molar mass iii.both have the same molecular formula iv.both have the same physical properties
a.i,iv b.ii,iii c.i,ii,iii d.ii,iii,iv
paper 2
1.in an experiment,bromine water is added drop by drop into the potassium iodide solution in a test tube until bromine water is in excess.the test tube is shaken.
a.i.state the colour of the potassium iodide solution(1m) ii.what solution colour is produced after it is mixed and shaken with bromine water?(1m)
b.a small amount of tetrachloromethane liquid is added to the product in the tst tube and shaken.
i.what is the colour of the tetrachloromethane layer after the mixture is shaken?(1m) ii.name the substance that gives colour to the tetrachloromethane layer stated in b.i.(1m)
c.in the reaction,name the substance that is the i.oxidising agent: ii.reducing agent(2m)
d.i.write the change in oxidation number that is experienced by bromine in the reaction.(1m)
Chemistry
1.which of the following pairs of compound will react? iC3H6+Br2 iiC3H6+Cl2 in sunlight iiiC3H6+H2O in the presence of sulphuric acid ivC3H6+H2O in the presence of concentrated sulphuric acid
a.i
b.i,iii
c.i,ii,iii
d.all
2.liqiud y reacts with magnesium metal to produce a gas that burns with a pop sound when a flaming wooden splint is placed near it.liqiud y is most likely a compound that has the formula
a.c2h5oh b.hcooh c.h3cooch3 d.c6h14
3.a compound p has the following characteristics:
-reacts with sodium carbonate to release a gas that clouds lime water
-reacts with compound q to form a fragrant liquid
a.p-sulphuric acid q-ethyl ethanoate
b.p-ethanoic acid q-ethyl ethanoate
c. p-ethanoic acid q-ethanol
d. p-ethanol q- ethanoic acid
4.element-proton no. e-6 g-8 j-9 l-11 m-12 which of the element pair from a compound which is insoluble in water.?
a.e-j b.j-l c.g-l d.g-m
5.which of the following staments are correct?
i.pent-2-ene decolourises bromine water but pent-3-ene does not. ii.both have the same molar mass iii.both have the same molecular formula iv.both have the same physical properties
a.i,iv b.ii,iii c.i,ii,iii d.ii,iii,iv
paper 2
1.in an experiment,bromine water is added drop by drop into the potassium iodide solution in a test tube until bromine water is in excess.the test tube is shaken.
a.i.state the colour of the potassium iodide solution(1m) ii.what solution colour is produced after it is mixed and shaken with bromine water?(1m)
b.a small amount of tetrachloromethane liquid is added to the product in the tst tube and shaken.
i.what is the colour of the tetrachloromethane layer after the mixture is shaken?(1m) ii.name the substance that gives colour to the tetrachloromethane layer stated in b.i.(1m)
c.in the reaction,name the substance that is the i.oxidising agent: ii.reducing agent(2m)
d.i.write the change in oxidation number that is experienced by bromine in the reaction.(1m)