ANS:C - all Indian children

No answer description is available. 

ANS:A - Yes

ANS:C - converge from the equator to the poles

Whether its magnetic meridian or true meridian in both conditions it starts converging from the equator to north pole and south pole.

Just take an example : the magnetic lines of earth can never be parallel, because these line meet at poles. So if you can see these magnetic lines at equator, they have more gaps but at the poles they are crowded at one point.

SO IT MEANS TRUE MERIDIAN ARE CONVERGING FROM EQUATOR TO POLES.

Thanks. They are assumed to be run parallel to each other but in actual they converges from equator to North poles and south poles.

ANS:A - Cerrusite

Cerrusite is a mineral composed of lead carbonate (PbCO3). It typically forms as a secondary mineral in the oxidation zone of lead ore deposits. Cerrusite is commonly found in association with galena, which is the primary ore of lead. However, it can also be found alongside zinc ores because lead and zinc often occur together in geological formations. In terms of appearance, cerrusite usually crystallizes in the orthorhombic crystal system and often forms prismatic or tabular crystals. Its color can vary, but it's often white, gray, or colorless, sometimes with tints of yellow, brown, or blue. Cerrusite has a high density and a relatively high hardness, making it easily recognizable to experienced mineral collectors and geologists. From an economic standpoint, cerrusite has been historically significant as a source of lead, which has various industrial applications. However, it's also relevant to the discussion of zinc because lead-zinc deposits often contain both minerals. When mined for lead extraction, cerrusite may contain zinc as an impurity, and this zinc can sometimes be recovered economically, adding value to the mining operation. Overall, cerrusite plays a role in both the lead and zinc mining industries, and its presence can influence the overall economics of a mining operation, especially when considering the extraction of both lead and zinc from the same deposit.

ANS:E - 256

How? Please explain.

ANS:D - none of these

A venturi meter is a device used to measure the flow rate of fluid in a pipe. It operates on the principle of Bernoulli's equation and measures the differential pressure created by the fluid's velocity change as it passes through a constricted section of the meter. Therefore, a venturi meter primarily measures pressure. Here’s why:

• Principle of Operation: According to Bernoulli's equation, an increase in fluid velocity in a constricted area (throat) of the venturi meter results in a decrease in pressure. The difference in pressure between the upstream and throat sections of the meter is directly related to the velocity of the fluid.
• Measurement: By measuring the pressure difference between the upstream and throat sections of the venturi meter, the flow rate of the fluid can be determined. This pressure difference is a direct indication of the fluid velocity and hence the flow rate.
• Other Options:
  • Velocity head: This is related to the kinetic energy of the fluid due to its velocity and is indirectly related to the pressure difference measured by the venturi meter.
  • Point velocity: While the venturi meter indirectly measures fluid velocity through pressure difference, it does not directly measure point velocity.

ANS:A - 33%

The Supreme Court has mandated that 33% of the executive committee posts in the Supreme Court Bar Association (SCBA) are reserved for women lawyers. This directive ensures that at least three out of nine seats and two out of six senior executive members are reserved for women, promoting gender diversity and inclusion in the legal profession.

ANS:A - 159

India is ranked 159th out of 180 countries in the World Press Freedom Index 2024, according to Reporters Without Borders (RSF). This index evaluates the freedom and independence journalists have to work and report, highlighting the challenges faced by journalists globally.

ANS:D - Micron

Micron's Sanand unit in India is gearing up to introduce its first batch of domestically manufactured semiconductor chips in 2025, primarily focusing on global exports. This move reflects Micron's commitment to technological innovation and highlights India's growing role in the global semiconductor industry.

ANS:D - Haryana

Haryana Chief Minister Manohar Lal Khattar launched the 'Chief Minister Equal Education Relief, Assistance and Grant (Cheerag)' scheme.