ANS:D - Transparency

No answer description is available. 

ANS:B - &

No answer description is available. Let's discuss.

ANS:E -

At the apex, where the transition curve joins the circular curve, the deflection/deviation angle (angle between tangent and chord) is half of the intersection angle of the circle ∆.
The polar deflection angle is 1/3 of the deviation angle.
So, 1/2 * 1/3 * ∆ = ∆/6.

ANS:D - current will flow to earth

No answer description is available.

ANS:C - high labour cost & low heat economy.

In the context of batch tray dryers, high labor cost and low heat economy refer to two distinct but related issues:

1. High labor cost: Batch tray dryers typically require manual loading and unloading of the product onto the trays. This manual handling of the product adds to the labor costs associated with the drying process. Additionally, batch operations may require frequent monitoring and adjustment of parameters such as temperature and airflow, further increasing labor requirements. Overall, the manual labor involved in operating batch tray dryers contributes to higher labor costs compared to automated or continuous drying methods.
2. Low heat economy: Batch tray dryers often operate on intermittent heating cycles, where the heating elements are turned on and off to maintain the desired temperature within the dryer. This cyclic heating can result in fluctuations in the internal temperature of the dryer, leading to inefficient use of heat energy. Moreover, since batch tray dryers are designed to process a fixed quantity of product per batch, there may be periods of time during the drying cycle when the dryer is not fully utilized, resulting in wasted heat energy. These inefficiencies in heat utilization contribute to a low heat economy, where a significant portion of the energy input is not effectively utilized for drying the product.

ANS:C - 3000

The maximum delivery pressure of a reciprocating compressor is typically around 3000 kg/cm². Therefore, the correct answer is: 3000 The maximum delivery pressure of a reciprocating compressor refers to the highest pressure that the compressor can achieve when it compresses gases or air. This pressure is crucial because it determines the compressor's capability to generate high-pressure outputs, which is often necessary in various industrial applications. In the context of the question, the options provided are:

• 1000 kg/cm²
• 2000 kg/cm²
• 3000 kg/cm²
• 4000 kg/cm²

ANS:C - ethanol

In industrial nomenclature, alcohol typically refers to ethanol. In industrial nomenclature, alcohol typically refers to ethanol for several reasons:

Definition and Context:

1. Ethanol (C₂H₅OH):
   • Ethanol is the most widely used alcohol in various industries and is commonly known as drinking alcohol or ethyl alcohol.

Industrial Significance:

1. Versatile Applications:
   • Ethanol is used in a wide range of applications, including as a solvent, in the production of beverages, and as a fuel additive (e.g., in gasohol).
2. Chemical Intermediate:
   • It serves as a key raw material in the synthesis of other chemicals, such as ethyl acetate, acetaldehyde, and various polymers.

Production Methods:

1. Fermentation:
   • Ethanol is produced naturally through the fermentation of sugars by yeast, commonly from crops like sugarcane and corn.
2. Synthetic Methods:
   • It can also be synthesized from petrochemical sources through hydration of ethylene, making it a versatile compound in both renewable and fossil fuel contexts.

Regulatory and Cultural Context:

1. Regulatory Framework:
   • Ethanol is often specifically referenced in regulations and standards regarding alcohol production, sales, and usage, distinguishing it from other alcohols.
2. Cultural Recognition:
   • In many contexts, "alcohol" is synonymous with ethanol due to its prevalence in alcoholic beverages, further solidifying its status in industrial nomenclature.

Summary:

ANS:B - S Jaishankar

External Affairs Minister Dr S Jaishankar held the 13th Foreign Ministers' Framework Dialogue with his Australian counterpart Penny Wong in Canberra.

ANS:A - Hyderabad

The 2nd UN World Geospatial Information Congress which is organized by the United Nations and the Departments of Science and Technology and Space is taking place in Hyderabad.

ANS:B - Rain water

Rain water is generally considered the purest form of water among the options listed. Rain water is generally considered the purest form of water among the options listed for several reasons:

Natural Filtration Process:

1. Evaporation and Condensation:
   • Rainwater forms through the evaporation of water from oceans, rivers, and lakes, which leaves behind impurities. As it condenses in clouds, it can be relatively free of contaminants.

Low Contaminant Levels:

1. Minimal Minerals and Chemicals:
   • In its initial form, rainwater contains fewer dissolved minerals and chemicals compared to groundwater or surface water, making it more "pure."

Collection and Use:

1. Harvesting Practices:
   • When collected properly, rainwater can be used for various applications, including irrigation and even drinking, after appropriate filtration and treatment.

Comparison to Other Water Sources:

1. Underground Water:
   • Often contains minerals and contaminants from the surrounding soil and rock layers.
2. Well Water:
   • Similar to underground water, well water can have higher levels of dissolved solids and microorganisms, depending on the depth and location.
3. Lake Water:
   • Typically contains various organic materials, sediments, and pollutants, especially in populated areas, making it less pure than rainwater.

Summary: