Question 1 of 20 4,306 total questions
The crystal layers in graphite are held together by
A electrostatic forces
B van der Waals' forces
C hydrogen bonds
D covalent bonds
Which of the following halogens is the most reactive?
Which of the following reactions is not feasible?
A Cl2 + 2Kl → 2KCI + I2
B Cl2 + 2NaF → 2NaCI + F2
C Zn + CuCI2 → ZnCl2 + Cu
D Zn + 2AgNO3 → Zn(NO3 )2 + 2Ag
In the Periodic Table, the elements that loss electrons most readily belong to
A Group 1 A
B Group 11 A
C Group 111 A
D Group V11 A
Which of the following properties increases down a group in the Periodic Table?
A Atomic radius
B Electronegativity
C Electon affinity
D Ionization energy
Calcium atom ionizes by
A gaining two electrons
B losing two electrons
C sharing two electrons
D gaining two protons
Two radioactive elements Q and S have half-life periods of 10 hours and 20 hours respectively. Therefore
A S decays faster than Q
B Q is twice as stable as S
C Q emits fewer particles than S
D S is more stable than Q
Which of the orbitals 4s, 4p, 4d and 4f has the lowest energy?
Pauli Exclusion Principle is related to
A quantum numbers of electrons
B reversiblility of equlibrium reactions
C electronegativity values of elements
D collision theory of reaction rates
What is the electronic configuration of an element represented as 199 X?
A 1s 2 2s2 2p 5
B 1s2 2s2 3s2 3p3
C 1s2 2s2 2p 3 3s2
D 1s 2 2s2 2p 6 3s2 3p6 4s 1
Which of the following atoms contains the highest number of electrons in the outermost shell?
Which of the compounds above would react to take up two molecules of bromine durng bromination?
A l only
B lll only
C l and ll only
D ll and lll only
In the diagram above, the mixture of the solids P and Q can be separated by?
A distillation
B fractional distillation
C crystallization
D fractional crystallization
Use the table above to answer this question .The least reactive element is
Use the table above to answer this question . The element that is likely to participate in covalent rather than ionic bonding is
In the diagram above, Y is a mixture of
A calcium hydroxide and ammonium chloride
B calcuim hydroxide and sodium chloride
C sodium chloride and ammonuim trioxonitrate (V)
D sodium dioxonitrate (lll) and ammouium chloride
From the diagram above the mass of crystals deposited when 1 dm 3 of a saturated solution of NaCl is cooled from 80 o C to 60o C is
A 117.00 g
B 58.50 g
C 11.70 g
D 5.85 g
When the two end alkyl groups ethyl ethanoate are interchange, the compound formed is known as
A methyl ethanoate
B ethyl propanaote
C methyl propanoate
D propyl ethanoate
An organic compound that does not undergo a reaction with both hydrogen cyanide and hydroxylamine can be
A alkene
B alkanal
C alkanone
D alkanoic acid
POlyvinyl chloride is used to produce
A bread
B pencils
C ink
D pipes
Next
Question Navigator
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
