Acids, bases and salt Worksheet-7
Multiple Choice Questions (with more than one option):
(A) It has a reducing atmosphere
(B) It has 97% carbon –di-oxide.
(C) It’s atmosphere is made of thick white and yellowish clouds of sulphuric acid
(D) It’s atmosphere has argon, helium neon and krypton
(E) The temperature of Venus is very less
(A) CaSO4, H2(g) + H2O(i) (B) CaS, CO2(g), H2O(l)
(C) CaSO4, CO2(g), H2O(g) (D) CO2(g), H2O(l)
(A) It provides acidic medium for the activity of pepsin
(B) It kills microorganisms which may get entry to stomach
(C) It breaks peptide bonds.
(D) It aids in digestion of lipids.
(E) Acidic medium is also required for digestion of carbohydrates.
(A) NaCl (B) Na2SO4 (C) CH3COONa
(D) K2CO3 (E) (NH4)2SO4
(C) Temperature of container increases
(D) Temperature of container decreases
(E) No change in temperature
(A) It is also used as antacid (B) Na2CO3
(C) It is used for washing (D) Na2O
(A) Glucose and alcohols do not contain Hydrogen.
(B) On dissolving in water glucose and alcohols do not produce hydrogen ions in water.
(C) Glucose and alcohols are covalent compounds so they do not form ions.
(D) Ions are carriers of electricity
(E) None of these
(A) They neutralize acids
(B) NaHCO3 is a weak acid also.
(C) They are not a base as they do not furnish OH– ions in solution.
(D) Their solution in water is alkaline.
CH3COONa and K2CO3 are the salts of weak acid and strong base.
Strong base NaOH and KOH
NaHCO3 + HCl → NaCl + H2O +CO2
Glucose and alcohols are covalent compounds so they are poor conductors of electricity.