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WorksheetsChemistry Quiz
Total questions: 25
Worksheet time: 52mins
What is the empirical formula for glucose?
CH20
CH2O2
C2H4O2
C6H12O6
Which of the following substances is made up of ions?
Sulphur
Naphthalene
Sulphur dioxide
Potassium chloride
Which of the following processes proved the kinetic theory of matter?
Photosynthesis
Respration
Diffusion
Neutralisation
Which of the following is a chemical formula of ammonium sulphate?
NH4SO4
(NH4)2SO4
(NH3)2SO4
(NH4)3(SO4)2
Elements in the Periodic Table are arranged according to an increase in
relative molecular mass
relative atomic mass
nucleon number
proton number
The diagram above shows three elements in Period 3 of the Periodic Table.
Which of the following is true about the properties of oxide formed?
The oxide of Z is basic
The oxide of Y is acidic
The formula of oxide Y is YO
The oxide of X reacts with an acid to form salt and water
What is process X?
Melting
Boiling
Freezing
Sublimation
Which of the following is the correct arrangement of the elements according to increasing order of electronegativity?
F, Al, Cl, K
F, Cl, Al, K
K, Cl, Al, F
K, Al, Cl, F
Sulphuric acid reacts with sodium hydroxide to form sodium sulphate and water.
What is the number of moles of sodium sulphate salt produced if 0.2 mol of sodium hydroxide is used?
0.05 mol
0.10 mol
0.20 mol
0.40 mol
Which of the following isotopes is used to detect leakage in a gas pipe?
Carbon-14
Cobalt-60
Sodium-24
Iodine-131
34 g of ammonia consist of
I 2 moles of nitrogen atoms
II 2 moles of ammonia molecules
III 1.204 X 1024 molecules
IV 5 moles of hydrogen atoms
[RMM of ammonia = 17, NA = 6.02 X 1023
I and II only
I , II and III only
II, III and IV only
I, II, III and IV
Professional cyclists usually fill their bicycle tyres with gas X which makes the bicycle lighter.
Which of the following elements, X, Y, W and Z, in the Periodic Table is suitable to be used in bicycle tyres?
W
X
Y
Z
What is the number of valence electrons in ion P?
5
6
7
8
Elements are arranged in order of increasing atomic mass in the Periodic Table.
Which of the following scientists made the above statement?
Meyer
Newlands
Mendeleev
Dobereiner
Atom of element X has a proton number of 13. Where is X located in the Periodic Table of Elements?
GROUP 3, PERIOD 2
GROUP 3, PERIOD 3
GROUP 13, PERIOD 2
GROUP 13, PERIOD 3
Which of the following substances is made up of atoms?
Argon
Nitrogen
Chlorine
Ammonia
Which of the following statements is true?
Mass of one copper atom is 64 g
Mass of 1 mol of helium is 8 g
32 g of sulphur contains 6.02 x 1023 suphur atoms
Mass of one sulphur atom is 32 times bigger than one carbon atom
Atom of oxygen-18 has 8 electrons. How many neutrons does an atom of oxygen-18 contains?
6
8
10
18
The following elements are in Group 17 in the Periodic Table of Elements except
bromine
iodine
chlorine
helium
X3+ ion has 14 neutrons and 10 electrons.
Which of the following proton numbers and nucleon numbers shows for atom X?
10, 14
10, 27
13, 14
13, 27
What is the arrangement of elements S, T, U and V in ascending order of atomic size?
S, T, U, V
S, V, T, U
V, U, T, S
U, T, S, V
Ammonium suphate is an example of a fertiliser.
Calculate the percentage of nitrogen in 1 mole of ammonium sulphate.
[RAM: N=14, H=1, S=32, O=16]
12.12%
21.21%
23.23%
31.31%
Which of the following shows an element in the Periodic Table of Elements with different oxidation number in its compounds?
A
B
C
D
Which of the following statements is true for the lifting and closing of the lid quickly and occasionally during heating?
To avoid the pressure in the crucible dish
To avoid the crucible dish from cracking
To avoid the white fumes from escaping
To avoid water vapour from entering the crucible dish
Which of the following is true about the elements X and Y?
Element X is less reactive than element Y
Both elements X and Y are monoatomic gas
Both elements X and Y are non metal
Element X reacts with element Y to form an ionic compound
