TS Polycet (Polytechnic) 2016 Previous Question Paper with Answers And Model Papers With Complete Analysis

Section – III
CHEMISTRY

Q). The chemical formula of limestone is
A) Ca(OH)₂
B) CaCO₃
C) CaO
D) Ca(NO)₃

Q). What is the colour of the gas evolved by heating lead nitrate?
A) Brown
B) Pink
C) White
D) Black

Q). The weight of one mole of table salt is
A) 35.5 g
B) 58.5 g
C) 23 g
D) 40 g

Q). Which of the following is an example of photochemical reaction?
A) 2AgBr→ 2Ag + Br₂
B) Zn + 2HCl → ZnCl₂ + H₂
C) 2H₂O → 2H₂ + O₂
D) CaCO₃ → CaO + CO₂

Q). Which of the following solutions gives yellow colour with methyl orange indicator?
A) NaOH
B) CH₃COOH
C) HCl
D) H₂SO₄

Q). Which of the following compounds is used in glass, paper and soap industry?
A) Washing soda
B) Baking soda
C) Calcium hydroxide
D) Plaster of Paris

Q). The formula of sodium zincate is
A) 2NaZnO
B) Na₂ZnO₂
C) NaZnO₂
D) NaZnO

Q). Which of the following bases is used in antacids?
A) Ca(OH)₂
B) NaOH
C) Mg(OH)₂
D) NH₄OH

Q). Which of the following elements belongs tod-block?
A) Cl
B) Cr
C) Sr
D) Ar

Q). “No two electrons in an atom have the same set of four quantum numbers.” This rule was stated by
A) Pauli
B) Aufbau
C) Hund
D) Bohr