Which of the following roles does sodium chloride play in soap preparation? It

The function of sulphur during vulcanization rubber is to?

Which of the following salts when dissolved in water will NOT give the corresponding pH value?

Which of the following is used in the manufacture of bleaching powder?

The substance that produce a white dense fumes with HCl gas is

0.499g of CuSO4 .XH2O when heated to a constant weight give a residue of 0.346g . The value of X is (Cu = 63.5, S = 32, O = 16, H=1)

The product of the reaction between ethanol and excess acidified K2Cr2O7 is…………..

The product formed at the anode when concentrated sodium chloride solution is electrolysed using copper electrodes is……..

A man suspected of being drunk is made to pass his breath into acidified potassium dichlormate solution. If his breath carries a significant level of ethanol, the final colour of the solution is?

Which of the following is an acidic salt?

Which of the following functional groups is present in an ester?.........

The following influences the discharge of ions during electrolysis except

At 25 degree Celsius, the saturated solution of a salt in water was found to contain 0.24g of the salt in 100cm3. What is the solubility of the salt in gdm-3?.......

The energy change (ΔH) for the reaction CO(g) + (1)/(2)O2(g) → CO2 is? (ΔHi(CO) = -110.4 kJ mol-) (ΔHi(CO2) = -393 kJ mol-)

Which of the following statements describes transition elements? They……….

Tetraoxosulphate (IV) ions are finally tested using?

0.16g of methane when burnt raises the temperature of 100g of water by 40°C. What is the of combustion of methane when if the heat capacity of water is 4.2 Jg-1°C-1? (CH4 = 16)

Consider the reaction represented by the equation C3H8(g)+5O2(g) ---> 3CO2(g)+6H2O(i) If 0.1 mole of C3H8(g) was completely burnt, what volume of CO2(g) would be produced at stp? [volume at stp = 22.4 dmr3 mol-1]......

Naturally occurring Boron is made up of 19.9% 10B and 80.1% 11B. The relative atomic mass of Boron is……….

An organic compound decolourized acidified KMnO4 solution but failed to react with ammoniacal silver nitrate solution. The organic compound is likely to be?

Which of the following household liquids would be effective in treating someone with too much acid in the stomach?...........

Which of the following substances is the most abundant in the universe?

A colourless organic compound X was burnt in excess air to give two colourless and odourless gases, Y and Z, as products. X does not decolorize blue bromine vapour, Y turns lime milky while Z gives a blue colour with copper (ll) tetraoxosulphate (IV). Compound X is?

Ethane of volume 400cm3 was completely burnt in excess oxygen according to the following equation 2C2H6(g) + 7O2(g) 6H2O(g) + 4CO2(g). Calculate the volume of steam that would be produced……….

A saturated solution at 300 will normally produce crystals at a temperature of………

Compound X forms a white gelatinous precipitate with ammonia solution and dissolved in excess of the solution. Compound X must contain

A colourless organic compound X was burnt in excess air to give two colourless and odourless gases, Y and Z, as products. X does not decolorize blue bromine vapour, Y turns lime milky while Z gives a blue colour with copper (ll) tetraoxosulphate (IV). Y and Z are respectively?

A weak acid is one which………..

Which of the following conditions are necessary for the preparation of alkanoates from alkanols and alkanoic acids?.........

The volume of 22g of CO2 at stp is equivalent to [C = 12, O = 16, molar volume at stp = 22.4dm2]…………

Pairs of outermost shell electrons which are not used in bonding are………..

A mixture of iodine and sulphur crystals can be separated by treatment with?

Pure water contaminated with quicklime will have a pH of………

The electrons configuration of 29Cu is..................

When s and p block elements react, the bond formed is…���..

The hardest form of carbon is………

The by - product of solvay process is

Which of the following is a neutralization reaction? Addition of

When an element exists in two or more forms in the same physical state, it exhibits……….

An atom of an element in the ground state contains 8 valence between electrons. The element is considered……….

The main function of limestone in the blast furnace during the extraction of iron is to……

Oxidation takes place always at the .... During electrolysis

If the cost of electricity required to deposit 1g of Aluminium is £10, how much would it cost to deposit 20g of Magnesium

20cm3 of a gaseous hydrocarbon and 150cm3 of oxygen were exploded in a closed vessel at room temperature. After cooling, 110cm3 of gases remained. After absorption by concentrated sodium hydroxide solution, the volume left was 50cm3. The molecular formula of the hydrocarbon is?

The bascicity of ethandioic acid is ?

The industrial preparation of sulphuric acid is termed

The burning of coal in the absence of air is

Sulphur is extracted from its ore by

The following factors influence discharge of ions during electrolysis except