The process by which liquid fats, such as vegetable oils, can be converted to solid fats is called
a. hydrogenation.
b. saturation.
c. carbonation.
d. oxygenation.
[Ques. 2] If you lift a 15-N weight vertically 30 m above the ground, you are
a. doing work against gravity.
b. doing work against friction.
c. doing work against inertia.
d. doing none of these.
[Ques. 3] Which of the following compounds has two hydroxyl groups?
a. Ethylene glycol
b. Ethanol
c. Glycerol
d. Cholesterol
[Ques. 4] Potential-energy values may be
a. positive only.
b. negative only.
c. zero only.
d. all of these.
[Ques. 5] Which carbohydrate cannot be digested by humans as a direct source of energy?
a. Fructose
b. Glucose
c. Sucrose
d. Cellulose
e. Starch
[Ques. 6] The energy of position is called
a. potential energy.
b. power.
c. kinetic energy.
d. heat.
[Ques. 7] Which compound has three hydroxyl groups?
a. Ethylene glycol
b. Ethanol
c. Cholesterol
d. Glycerol
[Ques. 8] Which of the following four objects has different kinetic energy?
a. An object of mass m moving with speed 4v
b. An object of mass 4m moving with speed 2v
c. An object of mass 16m moving with speed v
d. An object of mass 2m moving with speed 3v
e. None of these; all four objects have the same kinetic energy.
[Ques. 9] The general formula RNH2 is that of
a. an ester.
b. an amine.
c. an amide.
d. none of these
[Ques. 10] Which of the following four objects has the least kinetic energy?
a. An object of mass m moving with speed 4v
b. An object of mass 3m moving with speed 2v
c. An object of mass 4m moving with speed v
d. An object of mass 2m moving with speed 3v
e. None of these; all four objects have the same kinetic energy.
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