ANS:E - Hireling

Explanation: All except Hireling are young ones of animals.

ANS:A - a battery is a closed system

The key difference between a battery and a fuel cell is that a battery runs down as the electrodes dissolve, but a fuel cell operates for as long as oxygen and hydrogen flow. The battery is an energy storage device. It stores its fuel internally. A fuel cell is an energy conversion device. Its fuel is supplied externally.

ANS:A - 0.5 to 1.0 kg

In sewage, the total solids content can vary depending on various factors such as the source of sewage, the degree of treatment, and the characteristics of the wastewater. However, in general, the approximate total solids content in sewage is typically in the range of 0.5 to 1.0 kg per 1000 kg (1 metric ton) of sewage. Therefore, the correct option is:

• 0.5 to 1.0 kg

ANS:A - 1110

E = 14 in decimal or 1110 (8 + 4 + 2 + 0 = 14) is binary.

ANS:A - increases

The melting point of paraffin wax, which contracts on solidification, typically decreases with a rise in pressure. This behavior is in line with the general principle observed for most substances: as pressure increases, the melting point decreases. This relationship is based on the Clausius–Clapeyron equation, which describes the dependence of the phase transition temperature on pressure. When pressure is increased, the molecules in the solid phase are forced closer together, which tends to counteract the thermal energy required to overcome the attractive forces and melt the substance. As a result, the melting point decreases under higher pressure conditions. Therefore, the melting point of paraffin wax is expected to decrease with a rise in pressure.

ANS:D - Santosh Viswanathan

Santosh Viswanathan has been appointed as the Vice President and Managing Director for the India region at Intel. This strategic move aims to leverage his experience to drive value and customer-centricity in India's rapidly growing market, reflecting Intel's commitment to the region.

ANS:D - Bangladesh

India has decided to invite Bangladesh as a guest country to take part in the G20 meeting during its Presidency.