TS Polycet (Polytechnic) 2019 Previous Question Paper with Answers And Model Papers With Complete Analysis

Q). Froth floatation method is used for
A) Reduction of metal oxide
B) Concentration of ore
C) Extraction of metal
D) Purification of metal

Q). Aluminum is extracted from which of the following ores?
A) Hematite
B) Bauxite
C) Cinnabar
D) Limestone

Q). Which of the following methods is used for the purification of metal?
A) Magnetic separation
B) Roasting
C) Calcination
D) Poling

Q). Number of unhybridized p orbitals around each carbon in C₂H₄ molecule is
A) 0
B) 1
C) 2
D) 3

Q). The product formed in the reaction of carboxylic acid and an alcohol in the presence of cone. H₂SO₄ is an
A) Aldehyde
B) Ether
C) Alcohol
D) Ester

Q). The formula of Chloroform is
A) CH₃Cl
B) CH₂Cl₂
C) CHCl₃
D) CCl₄

Q). Which of the following is a Saturate Hydrocarbon?
A) Cyclopropene
B) Propene
C) Propyne
D) Propane

Q). The alkane which can show isomerism is
A) Butane
B) Ethane
C) Methane
D) Propane

Q). The process of conversion of starches and sugars to Ethyl alcohol is called as
A) Esterification
B) Saponification
C) Dehydration
D) Fermentation

Q). Which of the following is not a conductor of electricity?
A) Nanotubes
B) Graphene
C) Diamond
D) Graphite