Which of the following is a large molecule with two alternating mers?
A. elastomer
B. copolymer or interpolymer
C. mers
D. monomer
Submitted by :- Muhammad Nawaz
CHEMISTRY
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Which term is used to explain a polymer that has rubber like properties?
A. Elastomer
B. Elasticmer
C. Polychloroprene
D. Vulcanizer
Submitted by :- Muhammad Nawaz
Which of the following is the most broadly used dielectric material in the electrical and electronics industry?
A. Rubber
B. Polymer
C. Plastic
D. All of these
Submitted by :- Muhammad Nawaz
which of the following is called black gold?
A. Coal
B. Coal Tar
C. Petroleum
D. Natural gas
Submitted by :- Muhammad Nawaz
Incomplete oxidation of methane in the limited supply of air forms ?
A. CO2 and H2O
B. CH3OH
C. CO + H2 + C
D. CO + H2O + C
Submitted by :- Jamil Ahmed
Upto ___________________ C atoms alkanes are gases?
A. 2
B. 3
C. 4
D. 6
Submitted by :- Jamil Ahmed
Dehalogenation of ethyl tetrahalide will give____________________?
A. ethene
B. ethyne
C. ethyl halide
D. all of the above are possible
Submitted by :- Jamil Ahmed
When red hot steel is rapidly cooled in water, then the process is known as ____.
- Tampering
- Roasting
- Annealing
- Quenching
Submitted by :- Muhammad Nawaz
Soda lime is a mixture of____________________?
A. CaO and KOH
B. CaO and NaOH
C. NaOH and Na2O
D. Na2O and KOH
Submitted by :- Jamil Ahmed
Which materials is a slag?
- BaO
- Cao
- SiO2
- CaSiO2
Submitted by :- Muhammad Nawaz