ANS:C - at 11pm on 14 July in the year 1960

No answer description is available. 

ANS:A - Yes

Using the predefined variables _argc, _argv. This is a compiler dependent feature. It works in TC/TC++ but not in gcc and visual studio.

ANS:C - 0.770 m

1. 1.540 m - 0.705 m = 0.835 m.
2. 2.195 m - 1.490 m = 0.705 m.
Now,
Difference in level between A and B = (0.835 + 0.705)/2.
= 0.770 m. Apply reciprocal leveling formula. Dividing 2 is done to eliminate error due to curvature and refraction. Average is taken to eliminate an error. Because if there was no error then 0.835 m and 0.705 m would be equal.

ANS:C - either zero or 180°

No answer description is available. 

ANS:A - centrifugal

Centrifugal extraction, also known as liquid-liquid centrifugation or centrifugal separation, is a process used to separate immiscible liquids based on their differences in density. It relies on the application of centrifugal force to accelerate the separation of the phases. Here's how centrifugal extraction typically works:

1. Introduction of the Mixture: The mixture of immiscible liquids is introduced into a centrifuge, which is a rotating vessel designed to generate centrifugal force.
2. Centrifugation: The centrifuge is spun at high speeds, causing the liquids to separate into distinct layers based on their densities. The heavier phase (higher density) moves outward towards the periphery of the centrifuge rotor, while the lighter phase (lower density) moves towards the center.
3. Phase Separation: As the centrifuge continues to rotate, the two phases are effectively separated into layers. The interface between the phases becomes well-defined due to the centrifugal force acting on the system.
4. Collection: Once the separation is complete, the layers can be easily collected from their respective positions within the centrifuge vessel. This collected material may undergo further processing or analysis depending on the application.

• Separation of immiscible liquids, such as oil-water separation in wastewater treatment.
• Extraction of valuable compounds from organic solutions, such as separating organic solvents from reaction mixtures in chemical synthesis.
• Purification of biological samples, such as isolating DNA or proteins from cell lysates.
• Concentration of suspensions or emulsions by removing the dispersed phase.

ANS:B - long pipe at decreasing rate.

Unsteady uniform flow is represented by flow through a long pipe at constant rate. Here's an explanation of each option:

• Long pipe at constant rate: Unsteady uniform flow occurs when the flow rate through a long pipe remains constant over time, but the flow parameters (such as velocity and pressure) change with respect to time. This could be due to variations in boundary conditions or disturbances in the flow.
• Long pipe at decreasing rate: This would typically indicate a transient flow situation where the flow rate is changing over time, not unsteady uniform flow.
• Expanding tube at increasing rate: Flow through an expanding tube generally involves changing cross-sectional areas, which complicates the definition of uniform flow. Moreover, if the rate of flow is increasing, it usually indicates a transient or non-uniform flow scenario.
• Expanding tube at constant rate: Similar to above, the variation in cross-sectional area makes it challenging to maintain uniform flow conditions over time.

ANS:A - Uttar Pradesh

A high-level delegation from Uttar Pradesh is set to participate in the World Economic Forum meeting in Switzerland, scheduled from January 15 to 19. The delegation aims to showcase the state’s strides towards becoming a trillion-dollar economy and transforming metropolitan towns into focal points across various sectors.

ANS:D - 4th

India slipped to the fourth position in the global ranking of startup funding in 2023, experiencing a significant downturn with only $7 billion in total funding, after holding the third spot in both 2021 and 2022.

ANS:C - LIC

According to S&P Global's 2022 Insurance Report, LIC (Life Insurance Corporation of India) secured the fourth position globally in terms of life and accident & health reserves, with reserves amounting to $503.7 billion.

ANS:A - Paradip Port

Paradip Port set a new record with 100 Million Metric Tonnes of cargo handled in 262 days, showcasing operational excellence and leading in berth productivity among nationwide ports.