ANS:A - Only I and II follow

Explanation: First of all, company A should inspect the rejected valves to ensure if they are really sub-standard. If yes, it should scrutinise its working thoroughly and remove its lackenings, be it in the quality of raw material or craftsmanship. So, both I and II follow. III seems to be a far-off action which can be implemented only after the first two steps are put into practice. Thus, III does not follow,

ANS:C - Presentation, Processing, and Storage

No answer description is available.

ANS:E - all the above.

Hydrostatic stress, also known as volumetric stress.

Ratio of Volumetric stress to volumetric strain within the elastic limit is known as the bulk modulus of elasticity.

ANS:B - < 1

No answer description is available.

ANS:C - MOVE

No answer description is available.

ANS:C - Viscosity

The parameter used for grading paraffin waxes is typically the melting point. Here’s why: Melting Point: Paraffin waxes are graded based on their melting points, which directly influence their application suitability. Higher melting point waxes are often used in applications requiring higher temperature stability, such as candle making and coatings. Lower melting point waxes are used in applications where flexibility and lower temperature stability are desired, such as in packaging and certain industrial processes. The other parameters mentioned:

• Specific Gravity: While specific gravity can be measured for paraffin waxes, it is not typically used as a primary grading parameter. Specific gravity can indicate density and purity but does not directly determine the wax's grade.
• Viscosity: Viscosity can vary depending on the temperature and molecular weight of the wax, but it is not a primary grading parameter for paraffin waxes.
• Penetration Number: Penetration number is more commonly used to measure the hardness or consistency of materials like greases and bitumen, not paraffin waxes.

ANS:B - Turkey

On February 5, 2023, a 7.8 magnitude earthquake hit Turkey, killing many people and causing building collapses.

ANS:A - John Slaven

Satish Pai, the Managing Director of Hindalco Industries, has been appointed as the Vice-Chairman of the International Aluminium Institute (IAI). His appointment to this prestigious position underscores his extensive experience and leadership in the global aluminium industry. Hindalco Industries, a flagship company of the Aditya Birla Group, is one of the world’s largest producers of aluminium, and under Pai’s stewardship, it has made significant strides in sustainability and innovation. As Vice-Chairman of the IAI, Pai is expected to play a key role in shaping the institute’s strategic direction, particularly in promoting sustainable practices and addressing the environmental challenges faced by the aluminium sector globally. His appointment is also a recognition of India’s growing influence in the global aluminium market. Pai’s leadership is anticipated to contribute to advancing the IAI’s mission of promoting the aluminium industry’s interests, advocating for its sustainable growth, and enhancing its contribution to the global economy. His experience and vision are expected to drive initiatives that foster collaboration across the industry, enhance resource efficiency, and support the transition to a low-carbon economy, aligning with global sustainability goals.

ANS:A - Serum Institute of India

The R21/Matrix-M malaria vaccine is manufactured by the company known as the Oxford University spin-out, Vaccitech. This vaccine was developed in collaboration with the University of Oxford and is a promising candidate in the fight against malaria, particularly in regions where the disease is endemic. The R21/Matrix-M vaccine is notable for its use of a novel combination of antigens and an adjuvant to enhance the immune response. The Matrix-M adjuvant, developed by the pharmaceutical company Novavax, is crucial in boosting the vaccine’s efficacy. This vaccine has demonstrated significant promise in clinical trials, showing high efficacy rates in preventing malaria, which is caused by the Plasmodium falciparum parasite. The collaborative efforts in its development and the sophisticated technology behind the R21/Matrix-M vaccine represent a significant advancement in malaria vaccine research, with the potential to greatly impact global public health by providing a highly effective tool for malaria prevention and control.

ANS:D - Brazil

Australia and New Zealand have been awarded the hosting rights for the 2027 Women's World Cup football, marking a significant milestone in the history of the tournament. This decision, made by FIFA, reflects the growing prominence and development of women's football in the Oceania region. Australia and New Zealand’s joint bid was notable for its comprehensive plans to deliver a high-quality tournament with a focus on expanding the reach and visibility of women's football across the region. The 2027 Women's World Cup is expected to be a landmark event, showcasing the talents of female footballers from around the world while promoting the sport's growth and development in Australia and New Zealand. The hosting of the tournament will provide an opportunity for these countries to highlight their capabilities in organizing major international sporting events and will serve as a platform to inspire the next generation of female athletes. The event is anticipated to foster greater interest in women's football, enhance grassroots development, and build on the success of previous Women's World Cup tournaments.