The chemical name of quartz is

A Calcium oxide<br>
B Calcium phosphate
C Sodium phosphate
D Sodium silicate

Correct Answer: Sodium silicate

Quartz is a compound of one part silicon and two parts of oxygen, silicon dioxide, SiO2. Quartz is the most abundant silica mineral. It is used in a number of industries, the important being glass, foundry, sodium silicate, silicon alloys, etc. The various grades of sodium silicate are characterized by their SiO2:Na2O weight ratio.
Bissoy MCQ
#General Knowledge #Chemistry

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A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory . There are 100 seniors, 150 juniors and 200 sophomres who applied. Each senior's junior's name , 2 times; and each sophomres who applied. Each senior's name is placed in the lottery 3 times; each junior's name ,2 times name, 2 times ; and each sphomore's name , 1 time . What is the probability that a senior's name will be chosen?
A 18
B 38
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A 0
B 1
C ∞
D None of these
Collections of opals and quartz are featured at the City Museum's annual exhibition of precious stones.
A coins
B loot
C ornaments
D shells
Complete the analogous pair: QUARTZ: RADIO :: GYPSUM:?
A GLASS
B PORCELAIN
C CEMENT
D POWDER
In certain types of quartz, bands of colour form an irregular pattern.
A shades
B grains
C drops
D stripes
Quartz crystal is most commonly used in crystal oscillators because ___________
A It has superior electrical properties
B It is easily available
C It is quite inexpensive
D None of the above
Quartz is a crystalline form of
A Alumina
B Glass
C Silica
D Limestone
Piezoelectric quartz crystal resonators find application where
A Signal amplification is required
B Rectification of the signal is required
C Signal frequency control is required
D Modulation of signal is required
Quartz and Rochelle salt belongs to ___________ of piezo-electric materials
A Natural group
B Synthetic group
C Natural or Synthetic group
D Fiber group
Quartz is made of
A Calcium Sulphate
B Calcium Silicate
C Sodium Sulphate
D Sodium Silicate

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