Chemistry GK Questions and Answers
Which among the following is false about natural rubber?
(A) It is an elastomer
(B) It is a monomer of cis-isoprene
(C) Natural rubber is a polymer of chlororprene
(D) It is heated with sulphur compounds to improve its properties
Correct Answer : C
Plastic bottles are made of a polymer called PET. The expanded form of PET is
(A) Polyethylene terephthalate
(B) Polyethyl Terelene
(C) Polyethylene triphosphate
(D) Polyethyl tetrachloride
Correct Answer : A
The brand name Teflon represents which polymer?
(A) Polystyrene
(B) Polypropylene
(C) Polytetrafluoroethylene
(D) Polyethylene terephthalate
Correct Answer : C
Which is widely used in the plastic industry for manufacturing Bakelite?
(A) Ethyl Alcohol
(B) Phenol
(C) Ortho-Cresol
(D) Catechol
Correct Answer : B
A mixture of silver nitrate in a salt solution produces a curd-like substance. What is this reaction?
(A) Displacement
(B) neutralization
(C) combination
(D) precipitation
Correct Answer : B
What kind of brushing should be done to clean the mouth so that dentistry can be stopped?
(A) acidic dentin
(B) basic dentistry
(C) neutral dentition
(D) all
Correct Answer : B
Which nature's flame is emitted when a ribbon of magnesium is combusted?
(A) red and bright
(B) Blue shiny
(C) White luminous
(D) bright green
Correct Answer : C
Which gas is emitted by adding dilute sulfuric acid to granulated zinc?
(A) Hydrogen gas
(B) Sulfur Dioxide
(C) Oxygen gas
(D) No gas
Correct Answer : A
What is the substance of tooth gum which is very hard?
(A) Copper chloride
(B) calcium phosphate
(C) calcium carbide
(D) calcium carbonate
Correct Answer : B
What is the bond between two amino acids in a protein called?
(A) Ester bond
(B) Glycosidic bond
(C) Peptide bond
(D) Phosphodiester bond
Correct Answer : C
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