ANS:D - Neither I nor II is strong

Explanation: The age of a person is no criterion for judging his mental capabilities and administrative qualities. So, none of the arguments holds strong.

ANS:A - True

No answer description is available.

ANS:C -

It is 90W and there should be B instead of D!

ANS:B - Ideal voltage source is one whose internal conductance is zero

No answer description is available.

ANS:C - MODE CO40

Printer port : MODE LPTn[:] [COLS=c] [LINES=l] [RETRY=r]

Serial port : MODE COMm[:] [BAUD=b] [PARITY=p] [DATA=d] [STOP=s] [RETRY=r]

Device Status : MODE [device] [/STATUS]

Redirect printing : MODE LPTn[:]=COMm[:]

Prepare code page : MODE device CP PREPARE=((yyy[...]) [drive:][path]filename)

Select code page : MODE device CP SELECT=yyy

Refresh code page : MODE device CP REFRESH

Code page status : MODE device CP [/STATUS]

Display mode : MODE [display-adapter][,n]

MODE CON[:] [COLS=c] [LINES=n]

Typematic rate : MODE CON[:] [RATE=r DELAY=d]

ANS:A - more than 100

Tetraethyl lead (TEL) is added to petrol (gasoline) primarily to increase its octane number. The octane number of tetraethyl lead itself is typically more than 100. Here’s why tetraethyl lead is used:

• Octane Boosting: Tetraethyl lead is an effective octane booster. When added to gasoline, it increases the fuel's resistance to premature ignition (knocking), which allows for higher compression ratios in engines without knocking occurring.
• Historical Use: Historically, tetraethyl lead was widely used as an octane enhancer in gasoline. It was effective in raising octane numbers to meet the requirements of high-performance engines.
• Phase-out: Due to environmental and health concerns, tetraethyl lead has been phased out in many countries. Today, other compounds and refining processes are used to achieve high octane ratings without the use of lead additives.

ANS:D - 75

Sri Lanka is celebrating 75 years of independence under the theme "Namo Namo Matha – A step towards a century".

ANS:B - IISc Bengaluru

Researchers from the Indian Institute of Technology (IIT) Madras made a significant breakthrough in the mass production of recombinant proteins by utilizing Monosodium Glutamate (MSG). This innovative approach leverages MSG, commonly used as a flavor enhancer in the food industry, to enhance the efficiency of protein expression in microbial systems. By incorporating MSG into the growth medium, the researchers were able to improve the yield and quality of recombinant proteins produced through bacterial fermentation processes. This method offers a cost-effective and scalable solution for producing high quantities of recombinant proteins, which are crucial for various applications, including pharmaceuticals, industrial enzymes, and research. The use of MSG not only optimizes the growth conditions for microorganisms but also helps in achieving better control over the protein production process. This breakthrough has the potential to transform the biotechnology industry by providing a more efficient and economical means of producing valuable proteins, thereby accelerating research and development in fields such as drug discovery, diagnostics, and therapeutic protein production. The work of IIT Madras researchers highlights the intersection of food science and biotechnology, showcasing how commonly used substances can be repurposed to address challenges in protein manufacturing.

ANS:A - IIT-Bombay

The recent study shedding light on the mechanisms of sympatric speciation was conducted by researchers from the University of Cambridge. This study delves into how new species arise from a single ancestral species while inhabiting the same geographic region, a process known as sympatric speciation. The researchers used a combination of theoretical models, genetic analysis, and ecological experiments to explore the factors that drive this type of speciation. The study revealed critical insights into the roles of genetic variation, ecological niches, and reproductive isolation in facilitating sympatric speciation. By examining how populations of the same species adapt to different environmental conditions and evolve distinct traits while remaining in close proximity, the researchers have provided a deeper understanding of the complex dynamics involved in the formation of new species. This research has significant implications for evolutionary biology, particularly in understanding how biodiversity can arise and be maintained in environments where populations are not geographically separated. The findings from the University of Cambridge contribute to the broader knowledge of evolutionary processes and the mechanisms underlying species diversification.

ANS:C - Tata Group

The Indian business conglomerate Tata Group has been placed in the "Titans" category of TIME’s list of Most Influential Companies, alongside Reliance Industries Limited. This recognition highlights Tata Group's significant impact on global business and its influential role across various industries. The "Titans" category in TIME's list includes organizations that have demonstrated exceptional leadership, innovation, and influence in shaping their respective sectors and the broader business landscape. Tata Group, with its diverse portfolio spanning industries such as steel, automotive, technology, and hospitality, has made notable contributions to economic development and corporate responsibility. The conglomerate’s commitment to sustainability, social impact, and pioneering advancements in technology and industry has garnered international acclaim. Being featured in this prestigious list underscores Tata Group’s prominence and its continued influence in driving positive change and fostering growth both within India and on the global stage. This acknowledgment of Tata Group, alongside other prominent companies like Reliance Industries Limited, reflects the conglomerate's leadership and its role in shaping the future of global business.