Comprehension/Summary - Jamb English Language Past Questions and Answers

Question 196:

• JAMB 1984

A British electronics manufacturer has built a factory in which quartz crystals can be grown in 3 weeks. The natural growth of quartz takes 3 million years, and very often the crystals are not sufficiently pure to satisfy the precise needs of science. However, the manufactured crystals are exceptionally pure, and this is important because quartz, in transistors is used in an astonishing number of devices where constant accuracy is required: radio and television transmitters and receivers, space satellites and computers are familiar examples. In order to make artificial quartz, very small pieces of the natural crystal imported from Brazil are placed in long, narrow, steel cylinders. A high pressure and a high temperature are maintained within the cylinders for 3 weeks, and at the end of this the small fragments have grown to the required weight of one pound. The quartz is then ready to be made into the tiny transistors that have replaced the much larger thermionic valves.


The manufactured crystals have to be pure

A. Because natural quartz is pure
B. To maintain hygiene in factory work
C. To satisfy the precise needs of importers
D. To satisfy the exact requirements of science
E. Otherwise they would take 3 million years to grow.

Question 197:

• JAMB 1984

A British electronics manufacturer has built a factory in which quartz crystals can be grown in 3 weeks. The natural growth of quartz takes 3 million years, and very often the crystals are not sufficiently pure to satisfy the precise needs of science. However, the manufactured crystals are exceptionally pure, and this is important because quartz, in transistors is used in an astonishing number of devices where constant accuracy is required: radio and television transmitters and receivers, space satellites and computers are familiar examples. In order to make artificial quartz, very small pieces of the natural crystal imported from Brazil are placed in long, narrow, steel cylinders. A high pressure and a high temperature are maintained within the cylinders for 3 weeks, and at the end of this the small fragments have grown to the required weight of one pound. The quartz is then ready to be made into the tiny transistors that have replaced the much larger thermionic valves.


According to the passage, quartz is used

A. Only in a few devices
B. In a lot of devices
C. In wrist watches
D. For jewellery
E. For steel cylinders

Question 198:

• JAMB 1984

A British electronics manufacturer has built a factory in which quartz crystals can be grown in 3 weeks. The natural growth of quartz takes 3 million years, and very often the crystals are not sufficiently pure to satisfy the precise needs of science. However, the manufactured crystals are exceptionally pure, and this is important because quartz, in transistors is used in an astonishing number of devices where constant accuracy is required: radio and television transmitters and receivers, space satellites and computers are familiar examples. In order to make artificial quartz, very small pieces of the natural crystal imported from Brazil are placed in long, narrow, steel cylinders. A high pressure and a high temperature are maintained within the cylinders for 3 weeks, and at the end of this the small fragments have grown to the required weight of one pound. The quartz is then ready to be made into the tiny transistors that have replaced the much larger thermionic valves.


Artificial quartz as compared with natural is

A. Superior
B. Inferior
C. Just the same
D. Varied
E. Limited in use

Question 199:

• JAMB 1984

A British electronics manufacturer has built a factory in which quartz crystals can be grown in 3 weeks. The natural growth of quartz takes 3 million years, and very often the crystals are not sufficiently pure to satisfy the precise needs of science. However, the manufactured crystals are exceptionally pure, and this is important because quartz, in transistors is used in an astonishing number of devices where constant accuracy is required: radio and television transmitters and receivers, space satellites and computers are familiar examples. In order to make artificial quartz, very small pieces of the natural crystal imported from Brazil are placed in long, narrow, steel cylinders. A high pressure and a high temperature are maintained within the cylinders for 3 weeks, and at the end of this the small fragments have grown to the required weight of one pound. The quartz is then ready to be made into the tiny transistors that have replaced the much larger thermionic valves.


Transistors have

A. Helped to rodce quartz
B. Made radio and television inaccessible to the working populace
C. Made transmitters and receivers smaller and lighter
D. Retarded progress in electronics
E. Made transmitters and receivers bigger and heavier

Question 200:

• JAMB 1984

A British electronics manufacturer has built a factory in which quartz crystals can be grown in 3 weeks. The natural growth of quartz takes 3 million years, and very often the crystals are not sufficiently pure to satisfy the precise needs of science. However, the manufactured crystals are exceptionally pure, and this is important because quartz, in transistors is used in an astonishing number of devices where constant accuracy is required: radio and television transmitters and receivers, space satellites and computers are familiar examples. In order to make artificial quartz, very small pieces of the natural crystal imported from Brazil are placed in long, narrow, steel cylinders. A high pressure and a high temperature are maintained within the cylinders for 3 weeks, and at the end of this the small fragments have grown to the required weight of one pound. The quartz is then ready to be made into the tiny transistors that have replaced the much larger thermionic valves.


Artificial quartz is produced

A. In Brazil
B. From tiny transistors
C. In an astonishing number of devices
D. With the help of thermionic valves
E. From natural crystals within steel cylinders