81- The technique used to transmit audio signals in television broadcasts is:
A. Frequency Modulation
B. Amplitude Modulation
C. Pulse Code Modulation
D. Time Division Multiplexing
View Answer
Answer : A. Frequency Modulation
Description
82- The heat required to vaporize the refrigerant in the cooling unit of an electric refrigerator is furnished by:
A. The electric motor
B. The friction in the pipes
C. The food in the refrigerator
D. The air outside the refrigerator
View Answer
Answer : D. The air outside the refrigerator
Description
83- Aviation fuel for jet aeroplanes consists of purified:
A. Petrol
B. Kerosene
C. Gasoline
D. Diesel
View Answer
Answer : B. Kerosene
Description
84- Which of the following statements regarding the pressure cooker is not true?
A. Steam helps to cook food earlier
B. Under high pressure, the boiling point of a liquid decreases
C. It leads to the saving in terms of fuel consumption
D. None of these
View Answer
Answer : B. Under high pressure, the boiling point of a liquid decreases
Description
85- Filter Beds used to remove suspended impurities from municipal water consist of:
A. Fine sand
B. Gravel
C. Charcoal
D. All of these
View Answer
Answer : D. All of these
Description
86- Floppy disk in a computer system is:
A. Compiler
B. Core memory
C. Software
D. Device for storing and retrieving data
View Answer
Answer : D. Device for storing and retrieving data
Description
87- Which of the following metals is used for the manufacture of heating elements provided in electric presses?
A. Nichrome
B. Tungsten
C. Nickel
D. Chromium
View Answer
Answer : A. Nichrome
Description
88- The best colour for a sun umbrella will be:
A. Black
B. Black on top and white on the inside
C. White on top and black on the inside
D. Printed with all the seven colours of rainbow
View Answer
Answer : C. White on top and black on the inside
Description
89- A transistor is most likely to be found in a:
A. Fuse
B. Hearing aid
C. Wrist watch
D. Fluorescent lamp
View Answer
Answer : B. Hearing aid
Description
90- Which one of the following can be used to confirm whether drinking water contains a gamma emitting isotope or not?
A. Lead plate
B. Scintillation counter
C. Microscope
D. Spectrophotometer
View Answer
Answer : B. Scintillation counter
Description
91- A computer can be freely programmable:
A. If it is of a digital type
B. If it is controlled synchronously
C. If it contains a read only memory (ROM)
D. If it contains a random access memory (RAM)
View Answer
Answer : D. If it contains a random access memory (RAM)
Description
92- Which of the following polymers is widely used for making bullet proof material?
A. Polyethylene
B. Polyvinyl chloride
C. Polyamides
D. Polycarbonates
View Answer
Answer : C. Polyamides
Description
93- What is a flow chart in computer terminology?
A. A graphical representation of a sequence of operations in a computer programme
B. A circular chart used for computer languages
C. A debugging programme
D. None of these
View Answer
Answer : A. A graphical representation of a sequence of operations in a computer programme
Description
94- Alzheimer's disease in human beings is characterized by the degeneration of:
A. Kidney cells
B. Nerve cells
C. Brain cells
D. Pleura body
View Answer
Answer : C. Brain cells
Description
95- Which is a small conical gland-like structure of unknown function found in the brain of vertebrates?
A. Cerebellum
B. Medulla
C. Pineal body
D. Pleura body
View Answer
Answer : C. Pineal body
Description
96- The yellow colour of urine is due to the presence of:
A. Bile
B. Lymph
C. Cholesterol
D. Urochrome
View Answer
Answer : D. Urochrome
Description
97- Consider the following statements about antigens:
1. They induce the formation of antibodies.
2. They provide immunity.
3. They are formed only within the body.
A. 1 and 2
B. 2 and 3
C. 1 and 3
D. 1, 2 and 3
View Answer
Answer : A. 1 and 2
Description
98- Which of the following is essential for blood clotting?
A. RBC
B. WBC
C. Blood platelets
D. Lymph
View Answer
Answer : C. Blood platelets
Description
99- The tooth with three roots is:
A. Pre-molar
B. Molar
C. Incisor
D. Canine
View Answer
Answer : B. Molar
Description
100- In mammals, the part of the brain that has reached the highest level of development and that has enabled humans to grow their own crops, invent machines, develop language and art is:
