Questions

Program counter holds the address of either the first byte of the next instruction to be fetched for execution of the address of the next byte of a multi byte instruction, which has not been completely fetched. In both the cases it gets incremented automatically one by one as the instruction bytes get fetched. Also Program register keeps the address of the next instruction.

Yes, we know that water is a universal solvent.

Water can moderate temperature because of the two properties: high-specific heat and the high heat of vaporization.

Water is a polar molecule that has a high level of polarity and attraction to ions and other polar molecules.

Hence, all the above given options are the properties of water.

Since, the sentence starts talking about the ultimate hope; it should be followed by the statement that is talking about the hope. So, only statement Q connects with the given statement. Also, in the options there is a single option with starting statement as Q. The correct formation would be, ‘The ultimate hope that the destructive nature of weapons will force the nations to give up war has not been fulfilled.’

Tennis rackets and ballpoint pens are two independent goods. Since, one doesn't depend on the other.

The Standard hydrogen electrode (abbreviated SHE), is a redox electrode which forms the basis of the thermodynamic scale of oxidation-reduction potentials. Its absolute electrode potential is estimated to be 4.44 ± 0.02 V at 25 °C, but to form a basis for comparison with all other electrode reactions, hydrogen's standard electrode potential (E0) is declared to be zero volts only at 298.