Advanced level 2024 South West mock chemistry 1

Advanced level 2024 South West mock chemistry 1

Advanced level 2024 South West mock chemistry 1

Question 1–36 (thirty six questions)
Directions: Each of the questions or incomplete
statements In this section is followed by fonr suggested
answcrs.‘Sdcct the best answer In each ease.
D NOj‘andPtV–
8. An element has n relative atomic mass of 69–7
and gives two peaks in its moss spectrum. If
one of the peaks appears at a mass point of
68.9 with a relative abundance of 60%;what
will be the mass point of the other peak? .
A 71
B 70.23
C 69.3
D 70.9
v
1. The property of group (TV) elements which
decreases with increasing atomic number is:
A The inert–pair effect
B The stability of tbc +4 oxidation state
C Tfec oxidizing power of the dioxides
^ Jhc stability of the +2 oxidation slate
.9
A group IV chloride which is insoluble in cold
water but soluble in hot water is:
A PbCl2
. B CCU •
C SiCi,
D GeClj
.2
Which of the halogens win.’.1?
disproportionate In cold dilute alkali?
A Chlorine
B Bromine
C Iodine
D Fluorine
10.When butan–2–ol is heated with concentrated
supOniric at 170°C,the major product
obtained is but–2–cnc while the minor
product is but–1–enc.What principle is used
to determine the major product of this
reaction?
A SaytzefFs(Zaitsev’s) rule
B Hoffmann degradation
C Mnrkovnikov’s(MarkofhlkofFs) rule
D Clemcnson’s rule •
11.What does the definition “It is the ordered
arrangement of particles ina crystal“,
represent?
A • Space lattice
B Crystal
C Crystal structure
D Unit ccIL
3. The empirical formula of a compound is CH.
If its molar mass is 78, what is its molecular
formula?
A C2H2
B CH4
C CjlU
D CM
4. What do you understand by the term:
molccularitybfa reaction?
A It is the overall orderof a reaction.
B It is the total number of reactant molecules in a
reaction.
C It is the total number of molecules involved in
the slowest step of the reaction.
•D It is the total number of gaseous molecules ina
reaction.
12.A reddish brown precipitate is obtained when
a certain organic compound is passed
through ammoniaca] Coppcifl) chloride.
Theorganic compound formed is likely:
A But–1–ene
B But–I–ync
C Benzene
D But–2–yne
5. A
.
transition metal is defined as an element
which:
A is found between groups II and ID of the
periodic table.
B has a variable oxidation stale.
C occurs in the d–bk>ck of the periodic table.
D forms an ion with a partially filled
d–subsbclL
13. Which pair below arc isotopes?
A 1 g of 2£Pb and 10g of “Pb
B 1g of|2a Pb and 1 g of 2JJPb7’
CD 11mol mol of of 22JJ?§Pb Pband and11 mol molof of^“Pb Pb2*
6. The definition
“It is the number of times the overage mass of one atom of
an element is heavier than one–twelfth the mass of one

B Relative atomic mass
C Relative molecular mass
D Avogadro constant
14. A drop of concentrated sulphuric acid on a
cube of sugar turns the portion block.This is
because the sulphuric acid is:
A A drying agent
B A strong acid
C A dehydrating agent
D An oxdising agent
7. Identify the pair below with the same shape.
A NHj and BHj
B SO41’ and CQ*2′‘
C POCIj and CH3CH3