Copper metal will react with concentrated trioxonitrate (V) acid to give?
2
Which of the following separation is routinely applied in the petroleum industry
3
Starch undergoes complete hydrolysis to produce
4
Which of the following solids has a network structure?
5
Trioxosulphate (lV) acid is not stored for a long period because it
6
Alkanes are used mainly
7
Which of the following pairs illustrates isotopy?
8
Carbon is often deposited in the exhaust-pipe of cars because of the?
9
What does X atand for in the following expression? X = Log (10) (H + )
10
Sulphur burns in air to form
11
In which of the following changes is ∆S negative ?
12
Chlorine is is used in water treatment as
13
Which of the following pieces of deposited if a current of 10A was passed through a solution of copper(ll) salt for 965 seconds? (1F = 96500 C)
14
Some precious stones such as ruby and sapphire consist of aluminum oxide coloured by traces of the oxides of
15
Consider the reaction represented by the following equation CaCI 2 (aq) + H 2 C 2 O 4 (aq) ⇌ CaC 2 O 4 (s) + 2HCI (aq) . Which of the following would dissolve the precipitate of CaC 2 O 4 formed?
16
The following gases decolorize bromine water except
17
What volume of distilled water should be added to 400cm3 of 2.0 mole dm-3 \(H_{2}SO_{4}\) to obtain 0.20 mole dm-3 of solution>
18
Which of the following indicates the correct increasing order of oxidizing power of the halogens?
19
Which of the following substances is a peroxide?
20
The component of air that removed when air is bubbled into alkaline pyrogallol solution is
21
Which of the following will not affect the degree of hardness in a sample of temporarily hard water?
22
Examples of polymers include the following except
23
When the trioxonitrate (IV) salt of an alkali metal Y is heated, the formula of the residue is
24
Which of the following compounds of tin is a strong reducing agent?
25
In which of the following pairs are both substances deliquescent?
26
Producer gas is a mixture of
27
An alkene may be converted to an alkane by
28
Which of the following gases are diatomic except
29
Which of the following is correct about the electrons in the 1s orbital? They
30
The product of the reaction between ethanol and excess acidified K\(_2\)Cr\(_2\)O\(_7\) is
31
When ammonium chloride is dissolved in water in a test tube, the tube feels colder showing that
32
Zinc displaces copper from an aqueous solution of copper (ll) salt because
33
The alloy used for metal work and plumbing contains
