2003 NECO SSCE Chemistry Past Questions

2003

is an isotope of the element

2003

The number of hydrogen ions in 1.0dm6.00x103 of a 0.25 mole dm6.00x10-3 tetraoxosulphate(Vl) acid solution is[Avogadro constant = 6.0 x 1 0]

2003

Chlorine is used in water purification because it

2003

Which statement is NOT true about the composition of starch?

2003

A calcium atom and a calcium ion have the same

2003

Which is NOT a synthetic polymer?

2003

The reaction C2H6 → C2H + H2 is known as

2003

The increasing order of the oxidising power of the halogensis

2003

The boiling point of water is higher than the boiling point of ethanol because

2003

Which element is the most electronegative?

2003

What change will occur to the equilibrium mixture \(2CrO^{2-}_4(aq) + 2H^+(aq) ⇔ Cr_2O^{2-}_7(aq) + H_2O(l)\) when excess sodium hydrogen solution is added?

2003

What is the IUPAC name of CH3CCI=C(CH3)2?

2003

Which formula is used to indicate the degree of acidity of an acid?

2003

Which compound will give propane when it Is dehy drated by an excess of hot, concentrated tetraoxosvlphate(VI) acid?

2003

What mass of silver is deposited when a current of 2.6 A is passed through a solution of a silver salt for 40 minutes? [Ag= 108 ; F=96500C]

2003

Naturally occurring lithium consists of 90% \( ^7_3Li \text{ and 10% } ^6_3 Li. \) What is the relative atomic mass of lithium?

2003

Why does the treatment of cotton fabrics with dilute acids weaken the materials?

2003

An organic compound gave the following results on analysis: C = 29.3% ; H = 5.7%; Br = 65%.What is the empirical formula of the compound? [C = 12, H = 1, Br=80]

2003

What mass of copper is deposited when 6.5g of granulated zinc reacts with excess copper (II) tetraoxosulphate (VI) solution?The equation for the reaction is: Zn(s) + \( CuSO_4(aq)→ ZnSO_4(aq)+ Cu(s)\)[CU= 64; Zn=65]

2003 NECO SSCE Chemistry Past Questions

is an isotope of the element

The number of hydrogen ions in 1.0dm6.00x103 of a 0.25 mole dm6.00x10-3 tetraoxosulphate(Vl) acid solution is[Avogadro constant = 6.0 x 1 0]

Chlorine is used in water purification because it

Which statement is NOT true about the composition of starch?

A calcium atom and a calcium ion have the same

Which is NOT a synthetic polymer?

The reaction C2H6 → C2H + H2 is known as

The increasing order of the oxidising power of the halogensis

The boiling point of water is higher than the boiling point of ethanol because

Which element is the most electronegative?

What change will occur to the equilibrium mixture \(2CrO^{2-}_4(aq) + 2H^+(aq) ⇔ Cr_2O^{2-}_7(aq) + H_2O(l)\) when excess sodium hydrogen solution is added?

What is the IUPAC name of CH3CCI=C(CH3)2?

Which formula is used to indicate the degree of acidity of an acid?

Which compound will give propane when it Is dehy drated by an excess of hot, concentrated tetraoxosvlphate(VI) acid?

What mass of silver is deposited when a current of 2.6 A is passed through a solution of a silver salt for 40 minutes? [Ag= 108 ; F=96500C]

Naturally occurring lithium consists of 90% \( ^7_3Li \text{ and 10% } ^6_3 Li. \) What is the relative atomic mass of lithium?

Why does the treatment of cotton fabrics with dilute acids weaken the materials?

An organic compound gave the following results on analysis: C = 29.3% ; H = 5.7%; Br = 65%.What is the empirical formula of the compound? [C = 12, H = 1, Br=80]

What mass of copper is deposited when 6.5g of granulated zinc reacts with excess copper (II) tetraoxosulphate (VI) solution?The equation for the reaction is: Zn(s) + \( CuSO_4(aq)→ ZnSO_4(aq)+ Cu(s)\)[CU= 64; Zn=65]

Which metal bromide is widely used in photography?