ANS:B - 4213

No answer description is available. 

ANS:D - All of the above

No answer description is available. Let's discuss.

ANS:D - 4

One of the three ranging rods is not seen from the other ranging sides so they have to keep one extra ranging rod for there. So. 4 is correct in this way. 4 is the correct answer. Due to rising ground or hill between the two stations we opt for indirect ranging.

ANS:C - electric charge through the electrolyte

No answer description is available.

ANS:A - are different

Equilibrium-moisture curves of different solids are different. The equilibrium-moisture curve represents the relationship between the moisture content of a solid and the relative humidity of the surrounding air at equilibrium. This relationship depends on various factors such as the specific properties of the solid material (e.g., porosity, surface area, hygroscopicity), as well as the temperature and pressure conditions. Different solids have different physical and chemical properties that influence their ability to absorb and retain moisture from the surrounding environment. Therefore, the equilibrium-moisture curves of different solids will vary depending on these factors.

ANS:C - both (a) & (b)

The rise of liquid in a capillary tube is primarily due to adhesion.

Explanation:

1. Adhesion:
   • Adhesion is the attraction between molecules of different substances. In the context of a capillary tube, adhesion refers to the attraction between the molecules of the liquid and the molecules of the solid (the material of the capillary tube).
   • When the adhesive forces between the liquid molecules and the solid surface of the capillary tube are stronger than the cohesive forces between the liquid molecules themselves, the liquid climbs or rises in the capillary tube.
2. Cohesion:
   • Cohesion is the attraction between molecules of the same substance. While cohesion is important in maintaining the continuity and surface tension of the liquid column, it is not the primary reason for the rise of liquid in a capillary tube.
3. Capillary Action:
   • Capillary action occurs because of the combined effect of adhesive and cohesive forces. The liquid rises in a capillary tube due to the balance between these forces, with adhesion playing a crucial role in pulling the liquid up against the force of gravity.
4. Options Analysis:
   • Both (a) & (b): This option suggests that both cohesion and adhesion contribute to capillary rise, which is true to some extent, but adhesion is the primary reason for the rise of liquid in a capillary tube.
   • Neither (a) nor (b): This option is incorrect because adhesion does indeed play a significant role in capillary rise.

Conclusion:

ANS:D - Leh

To celebrate the 8th foundation day, Bandhan Bank opened its branch in the Leh district of Union Territory (UT), Ladakh, marking its presence in 35 of the 36 states and UTs of India.

ANS:A - Gandhinagar

The second G20-Chief Scientific Advisers’ Roundtable meeting began in Gandhinagar. Science advisors, Scientists, researchers from G 20 countries, and invited countries are taking part in the meeting.

ANS:D - Beijing

China and Bhutan held their first meeting of the Joint Technical Team on the Delimitation of the China-Bhutan Boundary in Beijing.

ANS:C - Ladakh

NTPC Limited, a prominent Maharatna Public Sector Undertaking operating under the Ministry of Power, has embarked on a groundbreaking venture by launching the trial of India’s inaugural hydrogen bus in Leh, situated in the Union Territory of Ladakh.