Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

CHEMICAL EQUATIONS AND REACTIONS

Total questions: 110

Worksheet time: 2hrs 32mins

Name
Class
Date
1.
Which of the following are exothermic processes? (i) Reaction of water with quick lime (ii) Dilution of an acid(iii) Evaporation of water (iv) Sublimation of camphor (crystals)
a)
(i) and (ii)
b)
(ii) and (iii)
c)
(i) and (iv)
d)
(iii) and (iv)
2.
Which among the following is(are) double displacement reaction(s)?(i) Pb + CuCl2 → PbCl2 + Cu (ii) Na2SO4 + BaCl2 → BaSO4 + 2NaCl (iii) C + O2 → CO2 (iv) CH4 + 2O2 → CO2 + 2H2O
a)
(i) and (iv)
b)
(ii) only
c)
(i) and (ii)
d)
(iii) and (iv)
3.
Barium chloride on reacting with ammonium sulphate forms barium sulphate and ammonium chloride. Which of the following correctly represents the type of the reaction involved?(i) Displacement reaction (ii) Precipitation reaction (iii) Combination reaction (iv) Double displacement reaction
a)
(a) (i) only
b)
(b) (ii) only
c)
(c) (iv) only
d)
(d) (ii) and (iv)
4.
In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in place of lead nitrate?
a)
(a) Lead sulphate (insoluble)
b)
(b) Lead acetate
c)
(c) Ammonium nitrate
d)
(d) Potassium sulphate
5.
Copper chloride and aluminum react to produce aluminum chloride and copper.  Which of the following is the correctly balanced chemical equation for this reaction?
a)
CuCl2 + Al -> AlCl3 + Cu
b)
3CuCl2 + Al -> AlCl3 + 2Cu
c)
3CuCl2 + 2Al -> 2AlCl3 + 3Cu
d)
CuCl2 + 3Al -> AlCl3 + 2Cu
6.
Which observation would most likely indicate that an exothermic reaction has occurred?
a)
a color change
b)
the production of gas bubbles
c)
an increase in temperature
d)
a decrease in temperature
7.

CaO + H2O --> Ca(OH)2

This is an example of

a)

Combination reaction

b)

Decomposition reaction

c)

Displacement reaction

d)

None of the above

8.

Assertion: AgBr is used on photographic and X – ray film.

Reason: AgBr is photosensitive and changes to Ag and bromine in presence of sunlight and undergoes decomposition reaction.

a)

Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

b)

The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.

c)

Assertion is true but the reason is false.

d)

The statement of the Assertion is false but the Reason is true.

9.

A substance which oxidises itself and reduces other is known as -

a)

oxidising agent

b)

reducing agent

c)

both of these

d)

none of these

10.

which of the following is an example of a physical change?

a)

formation of curd from milk

b)

ripening of fruits

c)

Extracting salt from sea water

d)

Burning of wood

11.

What happens when copper rod is dipped in iron sulphate solution?

a)

Copper displaces iron

b)

Blue colour of copper sulphate solution is obtained

c)

No reaction takes place

d)

Reaction is exothermic

12.

A student added dilute HCl to a test tube containing zinc granules and made following observations:

a)

the zinc surface became dull and black

b)

a gas evolved which burnt with a pop sound

c)

the solution remained colourless

d)

the solution becomes green in colour

13.

Zn + H2SO4 --------> ZnSO4 + H2

Above reaction is -

a)

decomposition reaction

b)

single displacement reaction

c)

combination reaction

d)

synthesis reaction

14.

The reaction in which two compounds exchange their ions to form two new compounds is -

a)

a displacement reaction

b)

a decomposition reaction

c)

an isomerization reaction

d)

a double displacement reactions

15.

A redox reaction is one in which-

a)

both the substance are reducedc

b)

both the substance are oxidised

c)

an acid is neutralilsed by the base

d)

one substance is oxidised while the other is reduced

16.

In the equation, NaOH + HNO3 ------> NaNO3 + H2O nitric acid is acting as-

a)

An Oxidising agent

b)

an acid

c)

a nitrating agent

d)

a dehydrating agent

17.

White silver chloride in sunlight turns to-

a)

grey

b)

yellow

c)

remain white

d)

red

18.

Black and white photography uses-

a)

decomposition of silver chloride

b)

decomposition of silver bromide

c)

both

d)

none of these

19.

When copper powder is heated it gets coated with-

a)

black copper oxide

b)

yellow copper oxide

c)

red copper oxide

d)

None of these

20.

Combination of phosphorus and oxygen is an example of -

a)

oxidation

b)

reduction

c)

rancidity

d)

None of these

21.

A reaction in which one reactants break down into two or more products

a)

Displacement reaction

b)

Redox reaction

c)

Decomposition reaction

d)

Combination reaction

22.

Which one of the following is an unbalanced equation

a)

Zn + H2SO2 -----> ZnSO4 + H2

b)

C + O2 -----> CO2

c)

NaCl + AgNO3 -----> AgCl + NaNO3

d)

BaCl2 + H2SO2 -----> BaSO4 + HCl

23.

What will happen when iron nail is putted into copper sulphate solution

a)

Iron nail becomes brownish

b)

Iron nail remains as same

c)

Iron nail will get dissolve in the solution

d)

Blue colour of copper sulphate solution fades

24.

Which type of reaction is this ?

a)

Double displacement reaction

b)

Decomposition reaction

c)

Redox reaction

d)

None of the Above

25.

What are the types of decomposition reaction

a)

Thermal, oxidation,Photolytic

b)

Thermal,Photolytic,

Electrolytic

c)

Endothermic,

Exothermic,Reduction

d)

None of the above

26.

Pb + CuCl2 → PbCl2 + Cu

The above reaction is an example of:

a)

combination reaction

b)

Double displacement

c)

Decomposition

d)

Displacement reaction

27.

The process by which addition of oxygen takes place is called

a)

Oxidation reaction

b)

Reduction reaction

c)

Exothermic reaction

d)

Endothermic reaction

28.

Reaction in which heat is given out is known as

a)

Thermal decomposition reaction

b)

Endothermic reaction

c)

Exothermic reaction

d)

Displacement reaction

29.

Before burning in air, the magnesium ribbon is cleaned to:

a)

Make the ribbon surface shinier

b)

Remove the layer of magnesium oxide from the ribbon surface

c)

Remove the layer of magnesium carbonate from the ribbon surface

d)

Remove the moisture from the ribbon surface

30.

The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of:

a)

Exothermic process

b)

Endothermic process

c)

Physical process

d)

Reversible process

31.

It is necessary to balance a chemical equation in order to satisfy the law of:

a)

Conservation of motion

b)

Conservation of momentum

c)

Conservation of energy

d)

Conservation of mass

32.

You are given the following chemical reaction:

a)

Combination reaction as well as double displacement reaction

b)

Redox reaction as well as displacement reaction

c)

Double displacement reaction as well as redox reaction

d)

Decomposition reaction as well as displacement reaction

33.

…………. is the process in which metals are eaten up gradually by the action of air, moisture or a chemical on

(a)  

34.

Following is given a diagram showing an experimental set-up:

a)

Distillation of water

b)

Purification of water

c)

Electrolysis of water

d)

Hydrolysis

35.

The chemical reaction between Hydrogen sulphide and iodine to give Hydrogen iodide and sulphur is given above:

identify the reducing and oxidizing agent in this reaction

(a)  

36.

The chemical formula of lead sulphate is

a)

Pb2SO4

b)

Pb(SO4)2

c)

PbSO4

37.

The following reaction is an example of a

4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)

(i) displacement reaction

(ii) combination reaction

(iii) redox reaction

(iv) neutralisation reaction

a)

(i) and (iv)

b)

(ii) and (iii)

c)

(i) and (iii)

d)

(iii) and (iv)

38.

Which option denotes a double displacement reaction?

a)

A + B + C

b)

A + B → C

c)

AC + BD → AD + BC

d)

AC + B → AB + C

39.

Which of the following statement about the reaction is correct?

a)

It is a decomposition reaction and endothermic in nature.

b)

It is a combination reaction

c)

It is a decomposition reaction and accompanied by release of heat.

d)

It is a photolytic decomposition reaction and exothermic in nature.

40.

Oxidation is the gain of ………….. or loss of …………..

(a)  

41.

In order to prevent the spoilage of potato chips, they are packed in plastic bags in an atmosphere of :

a)

N2

b)

Cl2

c)

H2

d)

O2

42.

Consider the reaction :

KBr (aq) + AgNO3 (aq) → KNO3 (aq) + AgBr (s)

This is an example of :

a)

Decomposition reaction

b)

Double displacement reaction.

c)

Combination reaction

d)

Displacement reaction.

43.

The equation

Cu + xHNO3 -> Cu(NO3)2 + yNO2 + 2H2O

The values of x and y are

a)

3 and 5

b)

5 and 6

c)

4 and 2

d)

1 and 6

44.

Zn + H2SO4 ->ZnSO4 + H2

Above reaction is

a)

Decomposition reaction

b)

displacement reaction

c)

Combination reaction

d)

Synthesis reaction

45.

A redox reaction is one in which

a)

Both the substance are reduced

b)

Both the substance are oxidized

c)

An acid is neutralized by the base

d)

One substance is oxidized while the other is reduced

46.

The Balanced Chemical Equation is also known as,

a)

Allen – Cahn Equation

b)

Arrhenius Equation

c)

Stoichiometric Equation

d)

Archard Equation

47.

What information does a Chemical Equation convey ?

a)

Various Reactants and their Products

b)

The relative Amounts ( in mole ) of the Reactants and the Products

c)

The specific conditions necessary for the Reactions

d)

Number of atoms or molecules of the reactants and products formed

e)

All of the Above

48.

In which of the following displacement reaction will not take place ?

a)

Between Iron and Copper Carbonate

b)

Between Calcium and Magnesium Hydroxide

c)

Between Aluminium and Magnesium Hydroxide

d)

Between Zinc and Iron Sulphate

49.

The other name by which Double Displacement Reaction is known as ,

a)

Double Combination Reaction

b)

Double Decomposition Reaction

c)

Metathesis

d)

All of the Above

e)

None of the Above

50.

Which is the law that is being used for balancing an equation ?

a)

Law of Conservation of Masses

b)

Law of Constant Proportions

c)

Avogadro's Law

d)

Both (a) and (b)

51.

Which of the following are the types of Decomposition Reactions ?

a)

Thermal Decomposition

b)

Photo - Chemical Decomposition

c)

Electrolytic Decomposition

d)

Both (a) , (b) and (c)

e)

None of the Above

52.

Which of the following Equations is Balanced ?

a)

3 NaH2PO4 → 4 NaPO3 + H2O

b)

4 H3PO4 → 3 H4P2O7 + 6 H2O

c)

2 C2H6 + 7 O2 → 6 H2O + 4 CO2

d)

None of the Above

53.
Three beakers labelled as A, B and C each containing 25 mL of water were taken. A small amount of NaOH, anhydrous CuSO4 and NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. Which one of the following statement(s) is(are) correct?(i) In beakers A and B, exothermic process has occurred. (ii) In beakers A and B, endothermic process has occurred. (iii) In beaker C exothermic process has occurred. (iv) In beaker C endothermic process has occurred.
a)
(i) only
b)
(ii) only
c)
(i) and (iv)
d)
(ii) and (iii)
54.

The following reaction is used for the preparation of oxygen gas in the laboratory

2KClO3 (s) + Heat + Catalyst → 2KCl (s) + 3O2 (g)

Which of the following statement(s) is(are) correct about the reaction?

a)

(a) It is a decomposition reaction and endothermic in nature

b)

(b) It is a combination reaction

c)

(c) It is a decomposition reaction and accompanied by release of heat

d)

(d) It is a photochemical decomposition reaction and exothermic in nature

e)

None of the Above

55.

Which of the following indicates that a chemical equation is balanced?

a)

The numbers of molecules on each side of the equation are equal.

b)

All of the coefficients are the same.

c)

The numbers of atoms of each element are the same on both sides of the equation.

d)

The sums of the coefficients on each side of the equation are equal.

56.
In a chemical reaction
a)
The atoms of the reactants always stay together to form the products
b)
The atoms of the reactants unbond, rearrange, and then rebond to form the products
c)
New atoms are formed which combine to make the products
d)
Some atoms disappear while others multiply to form the products
57.

When should you write the temperature or pressure above the arrow in a chemical reaction?

a)

When it is at standard temperature or pressure

b)

When it is not at standard temperature or pressure

c)

When the pressure is 1 Atmospheric Pressure

d)

When the temperature is 0 degrees Celcius

58.

Potassium Chlorate is heated in presence of catalyst to produce oxygen and potassium chloride.Which of the following statement(s) is (are) correct about the reaction?

a)

(a) It is a decomposition reaction and endothermic in nature

b)

(b) It is a combination reaction

c)

It is a decomposition reaction and accompanied by release of heat

d)

(d) It is a photochemical decomposition reaction and exothermic in nature

e)

None of the Above

59.

A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation?

a)

KMnO4 is an oxidising agent, it oxidises FeSO4

b)

FeSO4 acts as an oxidising agent and oxidises KMnO4

c)

The colour disappears due to dilution; no reaction is involved

d)

KMnO4 is an unstable compound and decomposes in presence of FeSO4 to a colourless compound.

60.

Q1. The following reaction ( Balanced Equation ) is an example of -

4NH3 + 5O2 → 4NO + 6H2O

a)

Decomposition reaction

b)

Precipitation reaction

c)

Redox reaction

d)

Neutralization reaction

e)

None of the Above

61.
The following reaction is an example of a 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)(i) displacement reaction (ii) combination reaction (iii) redox reaction (iv) neutralisation reaction
a)
(i) and (iv)
b)
(ii) and (iii)
c)
(i) and (iii)
d)
(iii) and (iv)
62.
Which of the following statements about the given reaction are correct?3Fe(s) + 4H2O(g) → Fe3O4(s) + 4H2(g)(i) Iron metal is getting oxidised (ii) Water is getting reduced (iii) Water is acting as reducing agent (iv) Water is acting as oxidising agent
a)
(i), (ii) and (iii)
b)
(iii) and (iv)
c)
(i), (ii) and (iv)
d)
(ii) and (iv)
63.
Which of the following are exothermic processes? (i) Reaction of water with quick lime (ii) Dilution of an acid(iii) Evaporation of water (iv) Sublimation of camphor (crystals)
a)
(i) and (ii)
b)
(ii) and (iii)
c)
(i) and (iv)
d)
(iii) and (iv)
64.
Three beakers labelled as A, B and C each containing 25 mL of water were taken. A small amount of NaOH, anhydrous CuSO4 and NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solutions contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. Which one of the following statement(s) is(are) correct?(i) In beakers A and B, exothermic process has occurred. (ii) In beakers A and B, endothermic process has occurred. (iii) In beaker C exothermic process has occurred. (iv) In beaker C endothermic process has occurred.
a)
(i) only
b)
(ii) only
c)
(i) and (iv)
d)
(ii) and (iii)
65.
A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution. The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation?
a)
KMnO4 is an oxidising agent, it oxidises FeSO4
b)
FeSO4 acts as an oxidising agent and oxidises KMnO4
c)
The colour disappears due to dilution; no reaction is involved
d)
KMnO4 is an unstable compound and decomposes in presence of FeSO4 to a colourless compound.
66.
Which among the following statement(s) is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to(i) the formation of silver by decomposition of silver chloride (ii) sublimation of silver chloride(iii) decomposition of chlorine gas from silver chloride (iv) oxidation of silver chloride
a)
(a) (i) only
b)
(i) and (iii)
c)
(c) (ii) and (iii)
d)
(d) (iv) only
67.
Which of the following is(are) an endothermic process(es)? (i) Dilution of sulphuric acid(ii) Sublimation of dry ice (iii) Condensation of water vapours (iv) Evaporation of water
a)
(a) (i) and (iii)
b)
(b) (ii) only
c)
(c) (iii) only
d)
(d) (ii) and (iv)
68.

Rancidity is a process in which fat/oils smell due to the change process of

a)

oxidation

b)

reduction

c)

displacement

d)

neutralization

69.

Colour of which metal changes to greem due to corrosion?

a)

Cu

b)

Al

c)

Fe

d)

Ag

70.

The following reaction is used for the preparation of oxygen gas in the laboratory

2KClO3 (s) + Heat --Catalyst--> 2KCl (s) + 3O2 (g)

Which of the following statement(s) is(are) correct about the reaction?

a)

(a) It is a decomposition reaction and endothermic in nature

b)

(b) It is a combination reaction

c)

(c) It is a decomposition reaction and accompanied by release of heat

d)

(d) It is a photochemical decomposition reaction and exothermic in nature

71.

Rusting of iron involves a chemical reaction which is a combination of:

a)

Reduction as well as combination reactions

b)

Oxidation as well as combination reactions

c)

Reduction as well as displacement reactions

d)

Oxidation as well as displacement reactions

72.

The neutralization reaction between an acid and a base is a type of:

a)

Double displacement reaction

b)

Displacement reaction

c)

Addition reaction

d)

Decomposition reaction

73.

A substance added to food containing fats and oils is called:

a)

Oxidant

b)

Rancid

c)

Coolant

d)

Antioxidant

74.

The condition produced by aerial oxidation of fats and oils in foods marked by unpleasant smell and taste is called

a)

Reduction

b)

Rancidity

c)

Corrosion

d)

Antioxidation

75.

Pb + CuCl2 → PbCl2 + Cu

The above reaction is an example of:

a)

Combination

b)

Double displacement

c)

Decomposition

d)

Displacement

76.

What happens when copper rod is dipped in iron sulphate solution?

a)

Copper displaces iron

b)

Blue colour of copper sulphate solution is obtained

c)

No reaction takes place

d)

Reaction is exothermic

77.

A student added dilute HCl to a test tube containing zinc granules and made following observations:

a)

the zinc surface became dull and black

b)

a gas evolved which burnt with a pop sound

c)

the solution remained colourless

d)

the solution becomes green in colour

78.

Zn + H2SO4 --------> ZnSO4 + H2

Above reaction is -

a)

decomposition reaction

b)

single displacement reaction

c)

combination reaction

d)

synthesis reaction

79.

Black and white photography uses-

a)

decomposition of silver chloride

b)

decomposition of silver bromide

c)

both

d)

none of these

80.

Combination of phosphorus and oxygen is an example of -

a)

oxidation

b)

reduction

c)

rancidity

d)

None of these

81.

Which of the following represent chemical equations? Check all that apply.

a)

2Na + H2O → 2NaOH + H22Na\ +\ H_2O\ \rightarrow\ 2NaOH\ +\ H_2

b)

2KClO3  → 2KCl + 3O22KClO_3\ \ \rightarrow\ 2KCl\ +\ 3O_2

c)

2Fe + 3O2 → 2Fe2O32Fe\ +\ 3O_{2\ }\rightarrow\ 2Fe_2O_3

d)

2H2O2H_2O

e)

3O3 , H2O3O_3\ ,\ H_2O

82.

When balancing this equation, Fe + Cl2 → FeCl3, the correct coefficient for Cl2?

a)

1

b)

2

c)

3

d)

4

83.

Balance this equation, CaCO3(s) → CaO(s) + CO2(g)?

a)

3,1,2

b)

1,1,1

c)

1,3,1

d)

2,6,3

84.

Balance this equation, AlCl3 + NaOH → Al(OH)3 + NaCl

a)

3,1,3,1

b)

1,3,3,1

c)

1,1,1,3

d)

1,3,1,3

85.

Balance the following equation: Cr(s) + Fe(NO3)2 (ag) → Fe(s) + Cr(NO3)3 (ag)

a)

2,3,3,2

b)

2,3,2,3

c)

4,6,6,2

d)

1,3,3,1

86.
Fill in the blanks with coefficient:
PCl5+_ H2O→_ HCl+H3PO4
a)
4, 5
b)
1, 6
c)
3, 8
d)
2,2
87.
How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O3
a)
2
b)
6
c)
1
d)
4
88.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction
89.

Which type of reaction is:

2 NaBr + Ca(OH)2 → CaBr2 + 2 NaOH

a)
Synthesis
b)
Single Displacement
c)
Double Displacement
d)
Combustion
90.

Which of the following is a common sign that a chemical change has occurred?

a)

A chemical has turned a different color, bubbled, and/or changed temperature.

b)

A chemical has changed to a different state of matter, such as a liquid to a solid.

c)

A chemical has changed size.

d)

A chemical has become a different shape.

91.

We store silver chloride in a dark coloured bottle to

a)

make redox reaction

b)

To protect it from action of sunlight

92.

Silver article turns black when kept in the open for a few days due to formation of

a)

Ags

b)

Agcl

c)

Ag2s

93.

Electrolysis of water is a decomposition reaction. The molar ratio of hydrogen and oxygen gases liberated during electrolysis of water is:

a)

1:1

b)

2:1

c)

1:2

d)

4:1

94.

(a)   of electrons is oxidation.

95.

Assertion: AgBr is used on photographic and X – ray film.

Reason: AgBr is photosensitive and changes to Ag and bromine in presence of sunlight and undergoes decomposition reaction.

a)

Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

b)

The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.

c)

Assertion is true but the reason is false.

d)

The statement of the Assertion is false but the Reason is true.

96.

Assertion: Zinc reacts with sulphuric acid to form zinc sulphate and hydrogen gas and it is a displacement reaction.

Reason: Zinc reacts with oxygen to form zinc oxide.

a)

Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

b)

Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

c)

Assertion is true but the reason is false.

d)

The statement of the Assertion is false but the Reason is true.

97.

The oxidizing agent in the following reaction is (a)  

CuO + H2 -->Cu + H2O

98.

Assertion: AgBr is used on photographic and X – ray film.

Reason: AgBr is photosensitive and changes to Ag and bromine in presence of sunlight and undergoes decomposition reaction.

a)

Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

b)

The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.

c)

Assertion is true but the reason is false.

d)

The statement of the Assertion is false but the Reason is true.

99.

Assertion: Zinc reacts with sulphuric acid to form zinc sulphate and hydrogen gas and it is a displacement reaction.

Reason: Zinc reacts with oxygen to form zinc oxide.

a)

Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

b)

Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.

c)

Assertion is true but the reason is false.

d)

The statement of the Assertion is false but the Reason is true.

100.

A student placed a strip of copper in a beaker containing zinc sulphate. Next day he observed that the

a)

colour of the solution changes to blue

b)

copper strip remained unchanged.

c)

copper strip thickened.

101.

A gas is released when Magnesium combines with Sulphuric acid. Identify the gas.

a)

Hydrogen

b)

Oxygen

c)

Carbon dioxide

102.

A reaction which takes place in the presence of light is called

a)

photochemical reaction

b)

electrochemical reaction

c)

combination reaction

103.

The products of neutralization reaction are

a)

salt and gas

b)

salt and water

c)

acids and bases

104.

A chemical reaction is identified by (i) change in colour (ii) change in state (iii) evolution of gas (iv) change in pressure

a)

(i) and (ii)

b)

(ii), (iii) and (iv)

c)

(i), (ii) and (iii)

105.

The reaction between iron nail and copper sulphate is type of

a)

displacement

b)

combination

c)

double displacement

106.

A metal 'M' reacts with an acid according to the equation :

M + H+ --------> M3+ + H2

The metal can be

a)

Potassium

b)

Magnesium

c)

Aluminium

d)

Barium

107.

When ethane reacts with oxygen present in air it produces CO2 and water. In this reaction how many moles of oxygen is used?

a)

3

b)

5/2

c)

2

d)

7/2

108.

A powdered salt X was heated in a dry test tube and evolution of brown fumes of nitrogen dioxide and a yellow residue of lead oxide is formed. The salt X is :

a)

Magnesium Carbonate

b)

Lead nitrate

c)

Ammonium Sulphate

d)

Calcium carbonate

109.

Reaction of Na and H2O gives a very strong base , NaOH and another product, a gas. How do you test for this gas ?

a)

Pass it through lime water, turns milky.

b)

Rotten egg smell

c)

Burns with a dazzling flame

d)

Burns with a pop sound

110.

What is the percent P (by mass) in H3PO4?

a)

30.6%

b)

31.6%

c)

32.6%

d)

33.6%

Similar Resources on Wayground

8th grade physics chemistry review9/17/18

106 questions

8th grade physics chemistry review9/17/18

quiz

Worksheet

•

7th - 10th Grade

HC07 Predicting Products - Single Replacement Reactions

107 questions

HC07 Predicting Products - Single Replacement Reactions

quiz

Worksheet

•

9th - 12th Grade

FINAL - Honors Physical Science

115 questions

FINAL - Honors Physical Science

quiz

Worksheet

•

8th - 10th Grade

AP Chemistry Thou Shalt Not Forget

112 questions

AP Chemistry Thou Shalt Not Forget

quiz

Worksheet

•

9th - 12th Grade

Chemistry Unit 2 Review

105 questions

Chemistry Unit 2 Review

quiz

Worksheet

•

9th - 12th Grade

2nd semester review

105 questions

2nd semester review

quiz

Worksheet

•

9th - 12th Grade

Chemistry Mini Test #4

113 questions

Chemistry Mini Test #4

quiz

Worksheet

•

9th - 10th Grade