A) six month
B) one year
C) two to five years
D) ten to fifteen years.
Ans : (C) A) 60 %
B) 70 %
C) 80 %
D) 90 %.
Ans : (D) A) 66 %
B) 70 %
C) 75 %
D) 80 %.
Ans : (C) A) Hydrochloric acid
B) Potassium hydroxide
C) Ammonium sulphate
D) Sodium chloride.
Ans : (B) A) 60 to 65 percent
B) 80 to 85 percent
C) 70 to 75 percent
D) 90 to 95 percent.
Ans : (D) A) 0.05 Ω
B) 0.1 Ω
C) 0.2 Ω
D) 0.4 Ω.
Ans : (C) A) weaker
B) stronger
C) diluted with water
D) there is no change in electrolyte.
Ans : (B) A) In a voltaic cell, the anode and cathode are carbon and zinc rod respectively
B) Leclanche cell suffers from local action and polarization
C) Dry cell is basically a beclanche cell
D) Edison alkali cell is a primary cell.
Ans : (C) A) Silver oxide
B) Carbon zinc
C) Mercury oxide
D) Lead acid.
Ans : (D) A) In which battery voltage is equal to charger voltage
B) In which the current in the circuit is fully supplied by the battery
C) Which gets charged and discharged simultaneously
D) Which supplies current intermittently and also during off cycle gets charged.
Ans : (D)