1) A person climbing a hill bends forward in order to:
(A) Avoid slipping
(B) Increase speed
(C) Reduce fatigue
(D) Increase stability
2) On earth a moving body ordinarily comes to rest by itself because of the:
(A) Law of inertia
(B) Forces of friction
(C) Conservation of momentum
(D) Gravity
3) When the door of an operating refrigerator is opened the temperature of the room will:
(A) Decrease
(B) Remain unchanged
(C) Fall down immediately
(D) Increase
4) An electric motor is used to convert:
(A) Electrical energy into mechanical energy
(B) Mechanical energy into kinetic energy
(C) Mechanical energy into electrical energy
(D) All of the above
5) The human blood is divided into:
(A) Four groups
(B) Three groups
(C) Two groups
(D) Five groups
6) Which type of blood of individuals are known as universal donor?
(A) Type A
(B) Type B
(C) Type AB
(D) Type O
7) Which type of blood of individuals are universal recipients.
(A) Type A
(B) Type A,B
(C) Type B
(D) Type O
8) A man can survive without food for at least:
(A) One month
(B) Two months
(C) Three months
(D) Four months
9) Air is completely removed from an electric bulb to prevent:
(A) Oxidation of tungsten
(B) Bursting of the bulb
(C) Loss of light due to absorption
(D) None of the above
10) The muscles, tissues and blood all are made up of:
(A) Proteins
(B) Carbohydrates
(C) Vitamins
(D) Fats