3. During the Puja days', people visit those houses where 'puja' is performed. They make it a point to go even if they are not invited. Manmohan visited the house of Keshav, his office colleague, during 'puja days'.
Options
A. Keshav had invited Manmohan for some other function.
B. Manmohan, being a religious man, went to Keshav's house uninvited.
7. Statements: Wind is an inexhaustible source of energy and an aerogenerator can convert it into electricity. Though not much has been done in this field, the survey shows that there is vast potential for developing wind as alternative source of energy.
Conclusions:
Energy by wind is comparatively newly emerging field.
The energy crisis can be dealt by exploring more in the field of aero-generation.
The phrase 'not much has been done in this field' indicates that wind energy is a comparatively newly emerging field. So, I follows. The expression 'there is vast potential for developing wind as alternative source of energy' proves II to be true.
8. Statements: The average number of persons per household is 5 in urban areas whereas it is 7 in rural areas. The national average is 6.
Conclusions:
The population per unit area in the rural areas is higher than in the urban areas.
More persons live in the same household in the rural areas as compared to those in the urban areas.