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 1 of 3.

Chinni said:   1 decade ago
In sio2 only the quartz metal is found

Subrahmanyam said:   1 decade ago
Quartz is obtained from the pure form of silicon dioxide (sand).

Akshatha said:   1 decade ago
Which liquid is metal?

Sunil said:   1 decade ago
Chemically, 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.

Khalifa aliyu said:   1 decade ago
Quartz is the chemical mixture of silicon dioxide.

Junu said:   1 decade ago
Chemically, 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. Is correct.

Vuppala rajesh said:   1 decade ago
Quartz is crystal, but it is not a chemical product.

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

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.

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


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