Q.1
Identify the triprotic acid from the following.
  • a) Carbonic acid
  • b) Bicarbonate
  • c) Glycine
  • d) Phosphoric acid
Q.2
Which of the following acids has the lowest pKa value?
  • a) Acetic acid
  • b) Sulphuric acid
  • c) Dil.HCl
  • d) Oxalic acid
Q.3
Which of the following bases has the highest pKa value?
  • a) NaOH
  • b) NaNO3
  • c) KNO3
  • d) KCl
Q.4
The degree of ionization does not depend on?
  • a) Temperature
  • b) Current
  • c) Nature of solvent
  • d) Concentration
Q.5
The hydrolysis constant of CH3COONa is given by ____________
  • a) Kh = Kw/Ka
  • b) Kh = Kw/Kb
  • c) Kh = Kw/Ka×Kb
  • d) Kh = Ka + Kb
Q.6
If pKb for fluoride at 25°c is 10.the ionization constant of hydrofluoric acid in water at this temperature is?
  • a) 3.52×10⁻³
  • b) 6.75×10⁻⁴
  • c) 5.38×10⁻²
  • d) 1.74×10⁻⁵
Q.7
Aqueous solution of the detergents are _________
  • a) Neutral
  • b) Acidic
  • c) Basic
  • d) Amphoteric
Q.8
If pH of solution of NaOH is 12.0 the pH of H2 SO4 solution of same molarity will be?
  • a) 2.0
  • b) 12.0
  • c) 1.7
  • d) 10.0387
Q.9
What is the concentration of OH– in a solution with a H+ concentration of 1.3×10⁻⁴ M?
  • a) 7.7×10⁻¹⁰ M
  • b) 7.7×10⁻⁹ M
  • c) 7.7×10⁻¹¹ M
  • d) 7.7×10⁻¹² M
Q.10
K1 and K2 for oxalic acid are 6.5×10⁻²and 6.1×10⁻⁵respectively. What will be the [OH–] in a 0.solution of sodium oxalate?
  • a) 9.6×10⁻⁶
  • b) 1.4×10⁻¹
  • c) 1.2×10⁻⁶
  • d) 1.3×10⁻⁸
0 h : 0 m : 1 s