GS PrelimsScience and TechnologyGeneral Science2009

In a dry cell (battery), which of the following are used as electrolytes?

Ammonium chloride and Zinc chloride

Sodium chloride and Calcium chloride

Magnesium chloride and Zinc chloride

Ammonium chloride and Calcium chloride

Correct Answer: Option A

Explanation

1. A dry cell battery is a common type of electrochemical cell. 2. It uses a paste electrolyte, rather than a liquid one, to prevent leakage. 3. The most common type, the zinc-carbon cell, uses a paste of Ammonium chloride as the primary electrolyte, often mixed with Zinc chloride to improve performance and shelf life. Ammonium chloride and Zinc chloride act as electrolytes.

More Science and Technology PYQs

With reference to Unmanned Aerial Vehicles (UAVs), consider the following statements : 1. All types of UAVs can do vertical landing. 2. All types of UAVs can do automated hovering. 3. All types of UAVs can use battery only as a source of power supply. How many of the statements given above are correct?
In the context of electric vehicle batteries, consider the following elements : 1. Cobalt 2. Graphite 3. Lithium 4. Nickel How many of the above usually make up battery cathodes?
Consider the following substances : 1. Ethanol 2. Nitroglycerine 3. Urea Coal gasification technology can be used in the production of how many of them?
Consider the following statements : 1. No virus can survive in ocean waters. 2. No virus can infect bacteria. 3. No virus can change the cellular transcriptional activity in host cells. How many of the statements given above are correct?
Consider the following statements : 1. Statement I: Activated carbon is a good and an attractive tool to remove pollutants from effluent streams and to remediate contaminants from various industries. 2. Statement II: Activated carbon exhibits a large surface area and a strong potential for adsorbing heavy metals. 3. Statement III : Activated carbon can be easily synthesized from environmental wastes with high carbon content. Which one of the following is correct in respect of the above statements?
Consider the following statements : 1. Statement I: Some rare earth elements are used in the manufacture of flat television screens and computer monitors. 2. Statement II : Some rare earth elements have phosphorescent properties. Which one of the following is correct in respect of the above statements?

View all Science and Technology questions →

Master UPSC Revision

Get 10,000+ topic-wise MCQs, spaced repetition, daily CSAT challenges, and detailed performance analytics.

Coming Soon to Play Store