1. Cold packs used in sports are examples of chemical energy. When the inner pouch is broken which is filled with water it reacts with the ammonium nitrate granules and makes new chemical bonds during the reaction absorbing energy from the surroundings.
The NBT is compulsory for prospective students applying to the Faculty of Health Sciences and the Diploma in Veterinary Nursing must write the NBT before or on 15 July in order to be considered for selection. The NBT is also used in the admission processes of the extended programmes.
1 If using the NOCACHE option, then each small read/write incurs an I/O. Reading/writing large quantities of data reduces the I/O.  Writing to the LOB creates a new version of the LOB chunk. Therefore, writing small amounts at a time incurs the cost of a new version for each small write.