lOMoARcPSD|4101159
SMI181Q
May/June/2019
Section A: Multiple Choice Questions (30 marks)
1. Suppose that an object is moving with a constant velocity. Make a statement
concerning its acceleration.
1. The acceleration must be constantly increasing.
2. The acceleration must be constantly decreasing.
3. The acceleration must be a constant non-zero value.
4. The acceleration must be equal to zero.
5. A statement cannot be made without additional information. [3]
2. A force of 120 N is applied to an object whose mass is 30 kg. The object's acceleration is
1. 3600 m/s2.
2. 150 m/s2.
3. 4.0 m/s2
4. 2.0 m/s2.
5. 0.25 m/s2. [3]
3. If the net work done on an object is negative, then the object's kinetic energy
1. decreases.
2. remains the same.
3. increases.
4. is zero.
5. cannot be determined without knowing the object mass. [3]
4. A block of mass M slides down a frictionless plane inclined at an angle θ with the
horizontal. The normal reaction force exerted by the plane on the block is
1. Mg.
2. Mg sin θ.
3. Mg cos θ.
4. Mg tan θ.
5. zero, since the plane is frictionless. [3]
5. Refer to the figure below. At what point does the mass have the most kinetic energy?
A mass is attached to one end of a string. The other end of the string is attached to a rigid
support. The mass is released at A and swings in a vertical arc to points B, C, and D, as
shown in the figure. Neglect air resistance and use g = 10 m/ .
2 Turn Over
, lOMoARcPSD|4101159
SMI181Q
May/June/2019
1. A
2. B
3. C
4. D
5. None of the given points. [3]
6. The perpendicular distance from the center of curvature to a spherical mirror is called
1. The center of curvature.
2. The radius of curvature.
3. The focal length.
4. The perpendicular axis.
5. Twice the radius of curvature. [3]
7. Complete the following chemical reaction and indicate the products.
HCl(aq) + NH4OH(aq) →
1. NH4Cl and O2
2. NH4Cl and H2O
3. NH4Cl and H2O2
4. NH3, Cl2, and H2O
5. NH3, HCl, and H2O [3]
8. What is the term for a substance that causes the oxidation of another substance in a redox
reaction?
1. anode
2. cathode
3. oxidizing agent
4. reducing agent
5. none of the above [3]
9. Which of the following molecular formulas corresponds to an alkane?
1. C6H10
2. C6H12
3. C6H14
4. all of the above
5. none of the above [3]
10. What is the term for the C=O group?
A) carbonyl group
B) carboxyl group
C) hydroxyl group
D) phenyl group
E) none of the above [3]
3 Turn Over
SMI181Q
May/June/2019
Section A: Multiple Choice Questions (30 marks)
1. Suppose that an object is moving with a constant velocity. Make a statement
concerning its acceleration.
1. The acceleration must be constantly increasing.
2. The acceleration must be constantly decreasing.
3. The acceleration must be a constant non-zero value.
4. The acceleration must be equal to zero.
5. A statement cannot be made without additional information. [3]
2. A force of 120 N is applied to an object whose mass is 30 kg. The object's acceleration is
1. 3600 m/s2.
2. 150 m/s2.
3. 4.0 m/s2
4. 2.0 m/s2.
5. 0.25 m/s2. [3]
3. If the net work done on an object is negative, then the object's kinetic energy
1. decreases.
2. remains the same.
3. increases.
4. is zero.
5. cannot be determined without knowing the object mass. [3]
4. A block of mass M slides down a frictionless plane inclined at an angle θ with the
horizontal. The normal reaction force exerted by the plane on the block is
1. Mg.
2. Mg sin θ.
3. Mg cos θ.
4. Mg tan θ.
5. zero, since the plane is frictionless. [3]
5. Refer to the figure below. At what point does the mass have the most kinetic energy?
A mass is attached to one end of a string. The other end of the string is attached to a rigid
support. The mass is released at A and swings in a vertical arc to points B, C, and D, as
shown in the figure. Neglect air resistance and use g = 10 m/ .
2 Turn Over
, lOMoARcPSD|4101159
SMI181Q
May/June/2019
1. A
2. B
3. C
4. D
5. None of the given points. [3]
6. The perpendicular distance from the center of curvature to a spherical mirror is called
1. The center of curvature.
2. The radius of curvature.
3. The focal length.
4. The perpendicular axis.
5. Twice the radius of curvature. [3]
7. Complete the following chemical reaction and indicate the products.
HCl(aq) + NH4OH(aq) →
1. NH4Cl and O2
2. NH4Cl and H2O
3. NH4Cl and H2O2
4. NH3, Cl2, and H2O
5. NH3, HCl, and H2O [3]
8. What is the term for a substance that causes the oxidation of another substance in a redox
reaction?
1. anode
2. cathode
3. oxidizing agent
4. reducing agent
5. none of the above [3]
9. Which of the following molecular formulas corresponds to an alkane?
1. C6H10
2. C6H12
3. C6H14
4. all of the above
5. none of the above [3]
10. What is the term for the C=O group?
A) carbonyl group
B) carboxyl group
C) hydroxyl group
D) phenyl group
E) none of the above [3]
3 Turn Over
