WorksheetsCHEMISTRY YEAR 10 REVISION BOOK SUMMER
Total questions: 185
Worksheet time: 3hrs 40mins
Acid in our stomach:
Hydrochloric acid
Sulfuric acid
Acetic acid
Carbonic acid
Which substance is alkali?
Toothpaste
Vinegar
Lemon juice
Soft drink
The color of litmus in acid:
Red
Blue
Purple
Green
The color of litmus in alkali:
Red
Blue
Purple
Green
Acids taste .....
sour
bitter
sweet
umami
Reaction between acid and alkali producing salt and water:
Combustion
Neutralization
Precipitation
Decomposition
Something that can be used to identify acid/alkali:
Indicator
Oxidator
Reductor
Terminator
If a solution is acidic, it can be neutralized by adding
a stronger acid
heat
a base
a weaker acid
In a water solution, how do acids differ from bases?
Acids form salts, but bases do not
Acids turn litmus blue, while bases turn litmus red
Acids form hydrogen ions (H+), while bases form hydroxide ions (OH-)
Bases form salts, but acids do not
WHAT ARE THE PROPERTIES OF ACID ?
Acids are corrosive, sour,
Lemon
Mint
tastes bitter
What colour does litmus paper turn when added to an acid?
Blue
Red
Green
Colourless
What other laboratory substance can you use to test if colourless substance is an acid or an alkali?
Catalyst
Salt
Universal Indicator
Water
Which substance is an acid?
Water
Bleach
Orange juice
Washing powder
Acids taste .....
sour
bitter
sweet
umami
Reaction between acid and alkali producing salt and water:
Combustion
Neutralization
Precipitation
Decomposition
The color of universal indicator in hydrochloric acid:
Red
Blue
Purple
Green
Add dilute sulphuric acid slowly to a small amount of copper oxide in a watch glass with stirring. What do you observe in the above reaction?
Copper oxide present in the watch glass dissolves in dilute H2SO4 and the colour of the solution becomes blue.
Copper oxide present in the watch glass insoluble in dilute H2SO4 and the colour becomes black.
Copper oxide present in the watch glass dissolves in dilute H2SO4 and the colour of the solution becomes crimson red.
Copper oxide present in the watch glass dissolves in dilute H2SO4 and the colour of the solution becomes yellow.
A compound of a calcium reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle; turns lime water milky. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.
CaO + 2HCl ⇨ CaCl2 + CO2 + H2O
CaCO3 + 2HCl ⇨ CaCl2 + CO2 + H2
CaCO3 + 2HCl ⇨ CaCl2 + O2 + H2O
CaCO3 + 2HCl ⇨ CaCl2 + CO2 + H2O
A student reacted hydrochloric acid with sodium hydroxide, until the solution was neutral. Next he evaporated, the water from the beaker. She noticed that white crystals remained in the bottom of the beaker. The crystals were most likely…
alkali
acid
water
salt
Which of the following are CHEMICAL properties of acids?
Reacts with metals to form salt and hydrogen gas
Reacts with metal carbonates to form salt, water and carbon dioxide gas.
Reacts with bases to form salt and water only
Tastes sour
Which of the following statements best define the term ‘salt’?
Salt is formed when metal reacts with an alkali.
Salt contains sodium ions and chloride ions.
Salt is formed from a weak Van der Waals’ forces of attraction.
Salt is formed when the hydrogen ions in an acid is replaced by metal or ammonium ions.
Which of the following reaction can produce sodium nitrate and water?
Sodium chloride solution and nitric acid.
Sodium sulphate solution and nitric acid.
Sodium hydroxide solution and nitric acid.
Sodium and dilute nitric acid.
Which of the following is true about the soluble and insoluble salt?
A
B
C
D
Which of the following salts can be prepared by using double decomposition method?
Silver chloride
Barium nitrate
Sodium carbonate
Lead (II) nitrate
Which of the following are the physical characteristics of salt crystal?
I They have similar size.
II They have fixed angle.
III They have fixed geometrical shapes.
IV They have flat surface, straight edges and sharp angles.
I, II and III
I, II and IV
I, III and IV
II, III and IV
Which of the following substances can be used to prepare copper (II) chloride by reaction with hydrochloric acid?
I Copper (II) oxide
II Copper (II) nitrate
III Copper (II) carbonate
IV Copper (II) hydroxide
I, II and III
I, II and IV
I, III and IV
II, III and IV
Which of the following reagents are suitable to prepare lead (II) sulphate salt?
Lead (II) oxide and sulphuric acid.
Lead (II) carbonate and sulphuric acid.
Lead (II) nitrate and potassium sulphate.
Lead (II) chloride and sodium sulphate.
Which of the following mixture will react to produce an aqueous zinc nitrate solution?
I Zinc carbonate and dilute nitric acid.
II Zinc oxide and dilute nitric acid.
III Zinc oxide and potassium nitrate solution.
IV Zinc and aqueous sodium nitrate solution.
I and II
II and III
III and IV
I and IV
What is the volume of alkali needed to produce 0.745 g of salt?
[Relative atomic mass: K = 39, H = 1, O = 16, Cl = 35.5]
5 cm3
10 cm3
15 cm3
20 cm3
6.8 g of calcium carbonate reacts with 50 cm3 of 1 mol dm–3 hydrochloric acid, HCl. Determine the mass of calcium carbonate that has not taken part in the reaction.
[Relative atomic mass: Ca = 40, C = 12, O = 16]
2.5 g
3.8 g
4.3 g
5.5 g
Which of the following is true about the use of salt?
A
B
C
D
Which of the following pairs of solutions will produce a white precipitate?
Lead (II) nitrate and sodium chloride.
Magnesium nitrate and sodium sulphate.
Calcium nitrate and sodium chloride.
Barium sulphate and sodium chloride.
Sodium carbonate solution is added into copper (II) nitrate solution in an experiment. What is the colour of the precipitate obtained?
Green
Yellow
White
Brown
Which of the following ions is in white precipitate and insoluble in excess sodium hydroxide solution?
Al3+
Pb2+
Zn2+
Mg2+
An aqueous iron (II) sulphate is added with aqueous sodium hydroxide and aqueous barium chloride. Which of the following is true about the observation of both the reaction?
A
B
C
D
Solution X is mixed with the following reagents.
i) dilute sulphuric acid
ii) iron(II) sulphate
iii) concentrated sulphuric acid
Brown ring is formed at the end of the reaction. What is the solution X?
Barium chloride
Sodium nitrate
Potassium sulphate
Magnesium oxide
A few drops of sodium hydroxide, NaOH solution, is added to an aqueous solution. A green precipitate is formed. Which of the following may be present in the solution?
Cu2+
Fe2+
Fe3+
NH4+
A substance, P, dissolves in dilute hydrochloric acid to produce a gas which turn lime water milky. When aqueous sodium hydroxide is added, a brown precipitate is formed. What is probably P?
Iron (III) carbonate
Zinc carbonate
Magnesium carbonate
Lead (II) carbonate
The following tests are conducted on solution X as shown in Table 1. Which of the following ions is present in solution X?
Ca2+
Zn2+
Mg2+
Pb2+
The following information explains the properties of P.
Which of the following is P?
Barium sulphate
Silver chloride
Magnesium oxide
Lead (II) carbonate
Complete the following word equation:
Metal + Acid -->
salt + water
salt + hydrogen
salt + Water + Carbon dioxide
salt + water + hydrogen
A salt is formed when nitric acid combines with sodium hydroxide. What is the name of the salt?
sodium chloride
sodium nitrate
hydrogen nitrate
sodium sulfate
Which two chemicals could you react to make only potassium chloride and water?
potassium and hydrochloric acid
potassium hydroxide and hydrochloric acid
potassium oxide and sulfuric acid
potassium and sulfuric acid
Which of the following salts is prepared by precipitation method?
sodium chloride
barium sulfate
calcium nitrate
ammonium carbonate
How would you prepare a sample of potassium chloride safely in the laboratory?
Add excess potassium metal to dilute hydrochloric acid
Titrate dilute HCl with aqueous KOH with an indicator
Titrate dilute HCl with aqueous KOH once with indicator, then again without
Mix aqueous potassium nitrate with aqueous sodium chloride
Which of the following methods is used to prepare zinc sulfate?
Add excess zinc chloride to aqueous sodium sulfate
Tiltrate dilute H2SO4 with aqueous Zn(OH)2 with an indicator, then again without
Add excess solid zinc oxide to dilute sulfuric acid
Mix aqueous zinc nitrate with aqueous potassium sulfate
After titrating aqueous NaOH with dilute HCl without indicator, what is my next step to obtain a sample of NaCl ?
Filtration
Evaporation to dryness
Repeat the titration
Evaporate to saturation, then cool the solution
After adding aqueous Ca(NO3)2 to dilute H2SO4, what is my next step to prepare a sample of CaSO4?
Crystallisation
Evaporation to dryness
Filtration to get the filtrate
Filtration to get the residue
Which of the following can be prepared by titration?
Magnesium sulfate
Zinc carbonate
Lead (II) sulfate
Lithium chloride
Why is solid calcium hydroxide added in excess to dilute nitric acid when preparing calcium nitrate salt?
To ensure all calcium hydroxide is used up
To speed up the reaction
To ensure all dilute nitric acid is used up
To have maximum yield of calcium nitrate
Which method of preparation of a pure salt solution requires the use of a pipette and burette?
BaCl2 + Na2SO4 --> BaSO4 + 2NaCl
CuO + HCl --> CuCl2 + H2O
NaOH + HCl --> NaCl + H2O
MgCO3 + H2SO4 --> MgSO4 + H2O + CO2
Which pair of reagents can be used to prepare copper(II) sulfate salt?
Copper metal with dilute sulfuric acid
Copper(II) nitrate with sodium sulfate
Copper(II) chloride and dilute sulfuric acid
Copper(II) carbonate with dilute sulfuric acid
Which two solutions, when mixed together, will form a precipitate?
dilute hydrochloric acid and barium nitrate
dilute sulfuric acid and sodium hydroxide
dilute hydrochloric acid and lead (II) nitrate
dilute nitric acid and zinc chloride
According to Brønsted-Lowry acid base theory, an acid ___.
is a proton donor
is a proton acceptor
produces H+ when added to water
turns phenolphthalein pink
According to Arrhenius acid-base theory, an acid ___.
is an H+ acceptor
is a H+ donor
is a substance that produces H+ in water
turns litmus paper blue
Which reactant in the following equation is acting as a Brønsted-Lowry acid?
ammonium
ammonia
hydroxide
water
HSO4-(aq) + H2O(l) → H3O+(aq) + SO42-(aq)
Identify the Brønsted-Lowry acid in the above reaction.
HSO4-
H2O
H3O+
SO42-
CO32-(aq) + H2O(l) → HCO3-(aq) + OH-(aq)
Using the above reaction, which species is the conjugate base?
CO32-
H2O
HCO3-
OH-
A substance that remains when a base has accepted an H+ ion is a(n)
(a)
Choose the conjugate acid of OH-
HCO3-
OH-
CO32-
H2O
Choose the conjugate base of HNO3
HNO3
H2O
H3O+
NO3-
True or False: All Arrhenius acids are also Brønsted-Lowry acids.
True
False
Which of the following substances is both a Brønsted-Lowry base and an Arrhenius base?
NH3(aq)
LiOH(aq)
HCl(g)
HCl(aq)
Which of the following is a polyprotic acid?
HCl
H2SO4
HNO3
HF
Which of the following is the hydronium ion?
H+
H2O
OH–
H3O+
Which substance is an Arrhenius base?
KCl
CH3Cl
KOH
CH3OH
The conjugate acid for NH3 is
NH2
N
H3
NH4+
According to Arrhenius acid-base theory, a base ___.
is an H+ acceptor
is a H+ donor
is a substance that produces OH- in water
turns litmus paper red
According to Brønsted-Lowry acid base theory, a base ___.
is a proton donor
is a proton acceptor
produces OH- when added to water
has a bitter taste
Identify the fuel that leaves more smoke and ash on burning.
Solid fuel
Liquid fuels
Gaseous fuels
Any one of the above
By which of the given processes is coal formed?
Carbonisation
Distillation
Vapourisation
Evaporation
Which of the forms of coal has highest percentage of carbon?
Anthracite
Bituminous
Peat
Lignite
What are the most common sources of energy used in automobiles?
Wood and coal
Petroleum and diesel
LPG and cow dung
Natural gas and coal
Which of the following properties is NOT a characteristic of a good fuel?
High Ignition temperature
Low cost
Causes minimum pollution
Readily available
Where is kerosene mainly used?
In laying down roads
As fuel in jet engines
In making water proof materials
In furnaces of industries
How is coke superior than coal as a fuel?
Coal is mineral and burns releasing smoke while coke is a residue
Coal is an impure form of carbon, while coke is a pure form of carbon
Only coal consists of atoms of carbon, hydrogen , oxygen and sulphur while coke mainly consists of carbon
All of the above
Which type of coal has the most energy?
Bituminous
Peat
Anthracite
Lignite
Which material is the initial starting point of coal formation?
Bituminous
Peat
Anthracite
Lignite
The use of diamond in abrasives is due to its
high melting point
hardness
octahedral shape
durability
Graphite and diamond are similar in that they
have octahedral shape
have same density
form carbon(IV) oxide o combustion
conduct electricity
Which of the allotropes of carbon is a constituent of a lead pencil?
Graphite
Diamond
Lampblack
Soot
The 'gasification of coke' is used for the manufacture of
producer gas
natural gas
synthetic gas
industrial gas
Which of the following compounds is a neutral oxide?
Carbon(IV) oxide
Carbon(II) oxide
Sulphur (IV) oxide
Sulphur (VI) oxide
A form of carbon used for absorbing poisonous gases and purification of noble gases is
wood charcoal
animal charcoal
carbon fibres
carbon black
Synthetic gas is a mixture of
CH4 and H2O
CH4 and H2
CO and H2
CO2 and H2
The allotropes of carbon used in the decolourisation of sugar of
graphite
soot
charcoal
lamp black
When steam is passed over red - hot carbon, the substances produced are
hydrogen and trioxocarbonate(IV) acid
hydrogen, oxygen and carbon(II)oxide
hydrogen and carbon(II) oxide
hydrogen and carbon(IV) acid
Carbon is tetravalent because
electrons in both the 2s and 2p orbitals are equivalent
the electrons in all the orbitals of carbon are equivalent
the 2s and 2p orbitals hybridised
all the atomic orbitals of carbon hybridise
Carbon's electronic configuration is
2,2,2
2,4
1,1,4
3,2,1
In covalent bonding electrons are
Shared
Transferred
Donated
Lost
Name the compound with formula C2H4
Methane
Ethane
Propane
Ethene
The property of self-linkage among identical atoms to form long chain compounds is known
Superposition
Catenation
Isomerisation
Halogenation
How many bonds will a C atom form?
1
2
3
4
Which of the following are saturated hydrocarbons
Alkanes
Alkenes
Alkynes
All of the above
Which of the following statements about graphite and diamond is true?
They have the same crystal structure
They have the same degree of hardness
They have the same electrical conductivity
They can undergo the same chemical reactions
Carbon is
divalent
trivalent
tetravalent
pentavalent
Because carbon has 4 valence electrons
it can form up to 4 covalent bonds
it can form ionic bonds
it can form only double bonds
it can form covalent bonds with H only
While cooking, if the bottom of the vessel is getting blackened on the outside, it means that:
The food is not cooked completely
The fuel is not burning completely
The fuel is wet
The fuel is burning completely
Which of the following is the molecular formula of cyclobutane?
C4H10
C4H6
C4H8
C4H4
While cooking, if the bottom of the vessel is getting blackened on the outside, it means that:
The food is not cooked completely
The fuel is not burning completely
The fuel is wet
The fuel is burning completely
How many carbons are there in the longest chain?
5
3
1
6
The carbons circled in red...
are double bonded
are sharing two pairs of electrons
are sharing three pairs of electrons
Are sharing three electrons
Prefix 'prop' is used when no. of carbon are
1
3
4
5
Which of the following compound is saturated hydrocarbon?
I CH3CH2CH2CH3
II CH3CHC(CH3)2
III CH3CH2CH(CH3)2
IV CH3CHCHCH3
I and III
II and IV
I, II and III
I, III and IV
Which of the following is the functional group of an alkene?
C-C
C=C
-OH
-COOH
If an alkane has 10 carbon atoms, how many hydrogen atoms will it have?
20
22
40
42
What is the correct name for the alkyne shown?
butyne
1-butyne
2-butyne
1-methyl-1-propyne
Which is the structures with IUPAC nomenclature
2,2,4-trimethylpentane
Graphite and diamond are similar in that they
have octahedral shape
have same density
form carbon(IV) oxide o combustion
conduct electricity
When steam is passed over red - hot carbon, the substances produced are
hydrogen and trioxocarbonate(IV) acid
hydrogen, oxygen and carbon(II)oxide
hydrogen and carbon(II) oxide
hydrogen and carbon(IV) acid
Which one of the following industries uses limestone as a raw material?
Aluminum
Cement
Sugar
Jute
Which one of the following industries uses bauxite as a raw material?
Aluminum
Cement
Jute
Steel
How many moles of carbon(iv)oxide contains 16.0g of oxygen?
[ C = 12.0, O = 16.0 ]
0.20 mol
0.25 mol
0.40 mol
0.50 mol
Stoichiometry is based on the law?
multiple proportion
constant composition
conservation of energy
conservation of mass

Crude and refined oil is transported around the country mainly by
trains (20 mi/hr)
pipelines (5 mi/hr)
airplanes (500 mi/hr)
tankers (70 mi/hr)
Fuel is classified into ...
renewable resource
non-renewable resource
Which one is not the example of fossil fuel?
coal
petroleum
natural gas
wood
The technique used to separate crude oil into several fraction of hydrocarbon is called...
filtration
evaporation
fractional distillation
crystallization
The more the number of carbon atoms, the ... the boiling point.
more
less
The lightest fraction was placed on the .. of fractionating column.
top
bottom
Naphta is used for ...
heating and cooking
for fuel in cars
for making chemicals
for jet fuel
Kerosene is used for ...
heating and cooking
for fuel in cars
for making chemicals
for jet fuel
Bitumen is used for ...
fuel in cars
making chemicals
jet fuel
making roads
Breaking down of larger hydrocarbon molecules into the smaller one is known as ...
cracking
addition
substitution
combustion
Any natural material that is used by humans is considered a(n)
natural resource
human resource
material resource
energy resource
The energy in these resources originally comes from the ______
sun's energy
moon's energy
living things
wind
Natural resources may be categorized as either _____________ or ________________
renewable or nonrenewable
living or non-living
dead or alive
available or nonavailable
A natural resource that can be replaced at least as quickly as it is used is called a(n)
renewable resource
nonrenewable resource
material resource
energy resource
A natural resource that forms much more slowly than it is consumed is a(n)
renewable resource
nonrenewable resource
material resource
energy resource
Examples of nonrenewable resources are
minerals, fossil fuels, coal, oil, petroleum, and natural gas
sun, wind, and water
plants and animals
oceans, rivers and streams
A nonrenewable resource formed from the buried remains of plants and animals that lived long ago are called
fossil fuels
material resources
rock
minerals
A natural resource that humans use to generate energy is
a material resource
an energy resource
fossil fuel
plant and animals
A natural resource that humans use to make objects or to consume as food or drink is
a material resource
an energy resource
fossil fuel
plant or animal
Examples of geologic resources are
rock, minerals, soil, and fossil fuels
plants and animals
choose the ways to extract geologic resources. Choose all that apply
drilling
mining
shoveling
conservation
A deposit of rock that has a high enough concentration of valuable material to be extracted for a profit is called a(n)
ore
smelt
leach
conservation
This is the process in which fuels and products are made from crude oil.
smelting
leaching
refining
conservation
stewardship
The protection and wise use of resources is called
smelting
leaching
refining
conservation
stewardship
__________________ is the careful and responsible management of resources.
smelting
leaching
refining
conservation
stewardship
Which of the following is NOT a *typical* use for oil?
Gasoline
Electricity
Plastic Manufacturing
Asphalt
Which is a fuel obtained by crude oil?
Diesel
Jet Fuel
Gasoline
All are obtained from crude oil
The majority of petroleum is used for
transportation
industrial uses
commercial uses
electricity
Petroleum & Coal are considered ___ energy sources
nonrenewable
renewable
Which of the following describes petroleum formation?
When dinosaurs became extinct 65 million years ago, their bodies decayed to become petroleum.
Petroleum is renewable over human lifetimes.
It takes hundreds of millions of years for petroleum to form.
Petroleum only formed in cold places such as Canada.
Natural gas occuring along with petroleum is called --------
Dry gas
Wet gas
Natural gas compressed at very high pressure is called -----
liquified natural gas
compressed natural gas
Liquid form of natural gas is ------
LNG
LPG
Petroleum gas liquefied under pressure is called -------
LNG
LPG
Major component of coal is -----
Silicon
Carbon
Highest quality coal is ------
Bituminous
Anthracite
Least quality coal is ------
Black lignite
Brown coal
Destructive distillation of coal is known as ----
coking of coal
Choking of coal
Ammonia contamination in coal is removed by absorbing it in a -----
Base
Acid
