Non-metals and their compounds

161.Diamond and graphite are allotropes of
 
A. silicone
 
B. nitrogen
 
C. Carbon
 
D. tin
 
Option”C” is correct
162.Which of the following does not contain carbon
 
A. Diamond
 
B. graphite
 
C. Coal
 
D. none of these
 
Option”D” is correct
163.Which of the following statements about diamond are correct? 1. It is used as a gem in jewelry because of its ability to reflect light. 2. It is a good conductor of electricity. 3. It is used for cutting glass, marble stone and other hard materials. It is used for drilling rocks. Select the correct answer using the code given below –
 
A. 1,3 and 4
 
B. 2,3 and 4
 
C. 1, 2 and 3
 
D. 2 and 4
 
Option”A” is correct
164.Which of the following is a basic element
 
A. sand
 
B. Diamond
 
C. marble
 
D. Sugar
 
Option”B” is correct
165.what is the pure form of carbon
 
A. Diamond
 
B. graphite
 
C. charcoal
 
D. fullerene
 
Option”A” is correct
166.who is the strictest among the following
 
A. Diamond
 
B. Glass
 
C. quartz
 
D. platinum
 
Option”A” is correct
167.what is a carat in relation to a diamond
 
A. chastity
 
B. Burden
 
C. Mass
 
D. density
 
Option”B” is correct
168.Which of the following is a good conductor of heat and electricity?
 
A. Diamond
 
B. anthracite
 
C. Granite
 
D. graphite
 
Option”B” is correct
169.Which of the following is a good conductor of electricity and heat
 
A. Diamond
 
B. anthracite
 
C. Granite
 
D. graphite
 
Option”D” is correct
170.Which of the following is used in pencils?
 
A. phosphorus
 
B. charcoal
 
C. graphite
 
D. sulfur
 
Option”C” is correct