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

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

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

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

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

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

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

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

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