ANS:B - Illegible

No answer description is available. 

ANS:A - Only 1 is correct.

No answer description is available. Let's discuss.

ANS:B - undulating

Tacheometric surveying is adopted in rough and difficult terrain where direct leveling & chains are either not possible or very difficult.

So, answer is undulating. Well, it should be water body as the staff is held in a horizontal plane since in water body no clear ground is available so we can put staff on the ground. 

ANS:B - 1/seconds

No answer description is available.

ANS:A - temperature rises

When the temperature rises, the relative humidity of air decreases, despite an increase in the absolute humidity. Relative humidity is the ratio of the partial pressure of water vapor in the air to the equilibrium vapor pressure of water at a given temperature. When the temperature rises, the equilibrium vapor pressure of water increases, but the actual partial pressure of water vapor may not increase at the same rate. As a result, the relative humidity decreases even though the absolute humidity (amount of water vapor in the air) increases. Therefore, when the temperature rises, the relative humidity of air decreases, despite an increase in the absolute humidity.

ANS:B - 1

For turbulent flow of a Newtonian fluid in a circular cross-section pipe, the ratio of maximum to average fluid velocity is approximately 0.66. This ratio is a characteristic of the velocity profile in turbulent flow, where the velocity distribution is more uniform compared to laminar flow. In laminar flow, the velocity profile is parabolic, with the maximum velocity at the centerline being twice the average velocity. However, in turbulent flow, due to mixing and increased momentum transfer across the cross-section, the ratio of maximum velocity (which occurs near the pipe wall) to average velocity is around 0.66. This means the maximum velocity is about 1.5 times the average velocity. Therefore, the correct answer is: 0.66

ANS:A - Jitender Singh

Jitender Singh has launched Swachhata Portal for Special Campaign 2.0.

ANS:A - activated carbon

Yellow glycerine is made into white using activated carbon. Yellow glycerine is made into white using activated carbon for several reasons:

1. Adsorption Properties:

• Impurity Removal: Activated carbon has a high surface area and porous structure, allowing it to effectively adsorb impurities, color compounds, and contaminants present in yellow glycerine.

2. Decolorization Process:

• Color Elimination: During the treatment process, yellow glycerine is passed through activated carbon filters or columns, where the carbon adsorbs colorants and other unwanted substances, resulting in a clearer, colorless product.

3. Chemical Stability:

• Non-reactive Nature: Activated carbon is chemically stable and does not react with glycerine, ensuring that the purity and quality of the glycerine are maintained during the decolorization process.

4. Cost-effective:

• Economical Solution: Using activated carbon for decolorization is a cost-effective method compared to other chemical treatments, making it a preferred choice in the industry.

Summary:

ANS:A - Mansukh Mandaviya

Union Health Minister Dr Mansukh Mandaviya launched a countrywide mega drive 'Raktdaan Amrit Mahotsav' for voluntary blood donation

ANS:C - 30 to 50

Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is 30 to 50 °C for several reasons:

1. Microbial Activity:

• Optimal Growth: This temperature range promotes the optimal growth and metabolic activity of fermentation microorganisms, such as yeast and bacteria, enhancing the efficiency of the fermentation process.

2. Product Yield:

• Maximized Production: Maintaining temperatures within this range helps maximize the yield of desired fermentation products, such as alcohol or organic acids, by optimizing microbial performance.

3. Preventing Inhibition:

• Avoiding Inhibitory Effects: At temperatures below 30 °C, microbial activity may be too slow, while temperatures above 50 °C can inhibit microbial growth or denature enzymes, leading to reduced fermentation efficiency.

4. Dilute Solutions:

• Enhanced Mass Transfer: Using very dilute solutions increases the solubility and availability of substrates for microbial consumption, promoting better fermentation outcomes and reducing the risk of product inhibition.

5. Process Control:

• Easier Temperature Regulation: Working within this temperature range allows for more straightforward temperature control during fermentation processes, facilitating consistent and reliable results.

Summary: