Questions

Sufi silsilas began to crystallise in different parts of the Islamic world around the twelfth century. The word silsila literally means a chain, signifying a continuouslink between master and disciple, stretching as an unbroken spiritual genealogy to the Prophet Muhammad. It was through this channel that spiritual power and blessings were transmitted to devotees. Special rituals of initiation were developed in which initiates took an oath of allegiance, wore a patched garment, and shaved their hair. Thus, all statements are correct.

Primary succession is the orderly and predictable series of events through which a stable ecosystem forms in a previously uninhabited region. Primary succession occurs in regions characterized by the absence of soil and living organisms.

The Plant Fibres are made up of cellulose whereas animal fibres are made up of collagen.

Currency of Qatar -RiyalCurrency of Angola -kwanzaCurrency of Peru –Nuevo SolCurrency of Philippines –PesoCurrency of Iraq –Dinar

The process of absorbtion of rain water by the soil on the earth is called infiltration. By this process, the rain water that falls on the soil becomes ground water.

Cathode ray is a beam of electrons emitted   from   the   cathode   of   a vacuum    tube.    It    is    invisible. Cathode  ray  tubes  are  also  found in     televisions     and     computer monitors.  Since  cathode  ray  is  a beam of electrons and all electrons are  identical,  charge  to  mass  ratio is same for all the gases and does not depend on the nature of gas.

Uttar Pradesh is the India's largest milk producing state. It contributes 17% of the total milk production in the country followed by Andhra Pradesh.