Questions

Since, the sentence starts talking about the leader of the opposition, the connecting statement will be R as it carries a relative pronoun ‘who’ which relates the sentences. S follows as it states the disappointment of the leader and the next statement talked about the reason of disappointment. P would be the concluding statement as it goes with the flow describing how the leader decided to convince the assembly and thus makes a coherent paragraph.

The correct formation would be, ‘The leader of the opposition who had a reputation for speech making was very much disappointed on realising that he had failed to convince the assembly in the manner he had planned to convince them’.

Permanent hardness of water may be removed by the addition of Sodium Carbonate.

Same charges will repel each other and the charges that are different will attract each other.

Violet colour has the highest energy. The higher the frequency, the faster the oscillations and thus the higher the energy. Therefore, the highest-frequency ultra-violet light or the lowest wavelength is violet.

In 1960s AT&T introduces its Data phone, the firstcommercial modem. The first commercial modem made for converting digital computer data at analog signalsfor transmission across long distance networks

All statements are based on demonetization, while sentence E talks about Greece’s Perpetual Crisis.