A. Multiple Choice
en ammonia breaks down to form hydrogen gas and nitrogen gas
?
A. NH
3
+ H
2
→ N
2
B. NH
3
→ N1. Which chemical equation correctly represents the decomposition reaction that takes place
wh + H
C. N
2
+ H
2
→ NH
3
D. NH
3
→ N
2
+ H
2
2. When propane is reacted in the presence of oxygen gas, the products of this combustion
reaction are:
A. C + H
2
B. CH
2
+ H
2
O
C. CO
2
+ H
2
D. CO
2
+ H
2
O
3. In a decomposition reaction:
A. the reactants are usually a metal and a nonmetal
B. one of the reactants is often water
C. the reactants are generally two ionic compounds in aqueous solution
D. energy in the form of heat or light is often produced
4. Synthesis reactions always:
A. use only one reactant
B. form only one product
C. involve an element and an ionic compound
D. require oxygen gas
5. Of the reactions below, which one is a double-replacement reaction?
A. NH
4
Cl → NH
3
+ HCl
B. 2 Mg + O
2
→ 2 MgO
C. 2 N
2
+ 3 H
2
→ 2 NH
3
D. Cd(NO
3
)
2
+ Na
2
S → Cd
S
+ 2 NaNO
3
6. The chemical equation,
Cr + Fe(NO
3
)
2
→ Fe + Cr(NO
3
)
3
,
is an example of which type of
reaction?
A. decomposition B. single-replacement
C. double-replacement
D. combustion
7. The chemical equation,
KClO
3
→ KCl + O
2
, is an example of which type of reaction?
A. decomposition B. single-replacement
C. double-replacement D. combustion
8. Which of the following are decomposition reactions?
1. CH
4
+ O
2
→ CO
2
+ H
2
O
2. CaO + CO
2
→ CaCO
3
3. Mg + O
2
→ MgO
4. PbCO
→ PbO + CO
2
A. 2 and 3 B. 2, 3, and 4 C. 4 only D. All are decomposition reactions.
9. Of the balanced chemical equations below, which one is combustion reaction?
A. 2 CH
4
+ 4 O
2
→ 2 CO
2
+ 4 H
2
O
B. CaO + H
2
O → Ca(OH)
2
C. 2 N
2
+ 3 H
2
→ 2 NH
3
D. 2 Mg + O
2
→ 2 MgO
10. In the following chemical reaction, what product is represented by X?
AlCl
3
+ NaOH → X + NaCl
A. AlOH
B. Al(OH)
3
C. Al
3
OH
D. It cannot be determined
B. Answer the following Question
1. List the 5 type of chemical reactions
_________________________________________________________________________
_________________________________________________________________________
2. The type of chemical reaction that produces CO
2
and H
2
O is ________________________
3. The 2 examples of chemical reaction that produce CO
2
and H
2
O in everyday life are:
1) ______________________________________________________________________
2) ______________________________________________________________________
4. List the 6 possible evidence that.
Python Notes for mca i year students osmania university.docx
A. Multiple Choiceen ammonia breaks down to form hydrogen gas and.docx
1. A. Multiple Choice
en ammonia breaks down to form hydrogen gas and nitrogen gas
?
A. NH
3
+ H
2
→ N
2
B. NH
3
→ N1. Which chemical equation correctly represents the
decomposition reaction that takes place
wh + H
C. N
2
+ H
2
→ NH
3
D. NH
3
→ N
2
+ H
2
2. When propane is reacted in the presence of oxygen gas, the
products of this combustion
reaction are:
A. C + H
2
B. CH
2
+ H
2. 2
O
C. CO
2
+ H
2
D. CO
2
+ H
2
O
3. In a decomposition reaction:
A. the reactants are usually a metal and a nonmetal
B. one of the reactants is often water
C. the reactants are generally two ionic compounds in
aqueous solution
D. energy in the form of heat or light is often produced
4. Synthesis reactions always:
A. use only one reactant
B. form only one product
C. involve an element and an ionic compound
D. require oxygen gas
5. Of the reactions below, which one is a double-replacement
reaction?
A. NH
4
Cl → NH
3
+ HCl
B. 2 Mg + O
2
→ 2 MgO
3. C. 2 N
2
+ 3 H
2
→ 2 NH
3
D. Cd(NO
3
)
2
+ Na
2
S → Cd
S
+ 2 NaNO
3
6. The chemical equation,
Cr + Fe(NO
3
)
2
→ Fe + Cr(NO
3
)
3
,
is an example of which type of
reaction?
A. decomposition B. single-replacement
C. double-replacement
D. combustion
7. The chemical equation,
KClO
3
→ KCl + O
4. 2
, is an example of which type of reaction?
A. decomposition B. single-replacement
C. double-replacement D. combustion
8. Which of the following are decomposition reactions?
1. CH
4
+ O
2
→ CO
2
+ H
2
O
2. CaO + CO
2
→ CaCO
3
3. Mg + O
2
→ MgO
4. PbCO
→ PbO + CO
2
A. 2 and 3 B. 2, 3, and 4 C. 4 only
D. All are decomposition reactions.
9. Of the balanced chemical equations below, which one is
combustion reaction?
A. 2 CH
4
+ 4 O
2
→ 2 CO
2
+ 4 H
5. 2
O
B. CaO + H
2
O → Ca(OH)
2
C. 2 N
2
+ 3 H
2
→ 2 NH
3
D. 2 Mg + O
2
→ 2 MgO
10. In the following chemical reaction, what product is
represented by X?
AlCl
3
+ NaOH → X + NaCl
A. AlOH
B. Al(OH)
3
C. Al
3
OH
D. It cannot be determined
B. Answer the following Question
1. List the 5 type of chemical reactions
__________________________________________________
_______________________
__________________________________________________
_______________________
2. The type of chemical reaction that produces CO
6. 2
and H
2
O is ________________________
3. The 2 examples of chemical reaction that produce CO
2
and H
2
O in everyday life are:
1)
_____________________________________________________
_________________
2)
_____________________________________________________
_________________
4. List the 6 possible evidence that a chemical reaction has
occurred.
__________________________________________________
_______________________
__________________________________________________
_______________________
5. Chemical reaction is the process of
____________________________________________
6. All chemical reactions must follow the Law of
_____________________________ which
state that
_____________________________________________________
_________
Circle
Yes
or
No
to this question for number 7, 8, 9, and 10.
7. Do this chemical reactions satisfy the Law of Conservation of
Mass (number of atom before and after reaction must be equal)?
7. H
2
+ O
2
→ H
2
O
Yes / No
8. Mg + O → MgO
Yes / No
9. H
2
+ Br
2
→ 2HBr
Yes / No
10. Ca + HBr → CaBr
2
+ H
Yes / No
