General Knowledge - General Science - Discussion

Discussion Forum : General Science - Elements and Metals (Q.No. 9)
9.
Quartz crystals normally used in quartz clocks etc. is chemically
silicon dioxide
germanium oxide
a mixture of germanium oxide and silicon dioxide
sodium silicate
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
27 comments Page 2 of 3.

Nipun said:   7 years ago
Anyone explain me in detail?

Ankur said:   7 years ago
It is used in clock and vibrates too fast.

Sowmya rockzz said:   8 years ago
Quartz is crystalline silicon dioxide.

Sunny said:   8 years ago
It is widely used in clocks.

SSD said:   9 years ago
Quartz is obtained from the pure form of silicon dioxide. Quartz is a compound called silicon dioxide. When a crystal of quartz is properly cut and mounted, it can be made to vibrate, or oscillate, using an alternating electric current; each oscillation, in turn, causes a voltage change across the crystal, which can be detected by a suitable electronic circuit.

The frequency at which the crystal oscillates is dependent on its shape and size, and the positions at which electrodes are placed on it. If the crystal is accurately shaped and positioned, it will oscillate at a desired frequency; in clocks and watches, the frequency is usually 32,768 Hz, as a crystal for this frequency is conveniently small, and as this frequency is a power of two and can easily be counted using a 15-bit binary digital counter.

A hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite) ; yellow sand is quartz with iron oxide impurities.

Bally Saini said:   9 years ago
Lime stone is parent rock of quartz rock. Lime stone contain silica or lime as major constitute. Hence, answer is related to silica.

Mounika said:   10 years ago
Quartz is a crystal which is chemically silicon dioxide.

Rashmi said:   10 years ago
Quartz is crystalline silicon dioxide.

Lalit kumar said:   10 years ago
A hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite) ; yellow sand is quartz with iron oxide impurities.

G. Sunil Reddy said:   1 decade ago
Quartz is a crystal and also silicon dioxide (sand).


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