TS Polycet (Polytechnic) 2020 Previous Question Paper with Answers And Model Papers With Complete Analysis

Q) The volume occupied by one gram of hydrogen gas at STP is
A) 22.4 liters
B) 5.6 liters
C) 11.2 liters
D) 44.8 liters

View Answer
C) 11.2 liters

Q) The colour of phenolphthalein indicator in NaOH solution is
A) pink
B) yellow
C) brown
D) red

View Answer
A) pink

Q) The functional group in aldehyde is
A) -OH
B) -CHO
C) -COOH
D) -COOR

View Answer
B) -CHO

Q) The IUPAC name of CH3-CH2-CH = CH2 is
A) But-3-ene
B) But-1-ene
C) Butyne
D) Butane

View Answer
B) But-1-ene

Q) Volume of oxygen required at STP for complete combustion of 1 mole of ethane.
A) 39.2 liters
B) 78.4 liters
C) 156.8 liters
D) 22.4 liters

View Answer
B) 78.4 liters

Q) The distance between two adjacent layers in graphite
A) 3Å
B) 3.35Å
C) 4Å
D) 3.6Å

View Answer
B) 3.35Å

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

View Answer
C) CHCl3

Q) Which of the following is saturated hydrocarbon?
A) C2H6
B) C2H2
C) C2H4
D) C4H8

View Answer
A) C2H6

Q) Which one of the following orbitals is possible?
A) 1p
B)3f
C) 2d
D) 2s

View Answer
D) 2s

Q) Identify the Dobereiner’s triad which has alkali metals?
A) Cl, Br, I
B) Li, Na, K
C) Ca, Sr, Ba
D) Mn, Cr, Fe

View Answer
B) Li, Na, K
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