NEET Practice Questions (MCQs) with Answers & Solutions

According to the NCERT, 'When the load is removed, say at some point C between B and D, the body does not regain its original dimension. In this case, even when the stress is zero, the strain is not zero. The material is said to have a permanent set. The deformation is said to be plastic deformation.'

The NCERT states, 'Beyond this point [D], additional strain is produced even by a reduced applied force and fracture occurs at point E.' Fracture signifies the complete failure of the material.

The NCERT highlights, 'The stress-strain curves vary from material to material. These curves help us to understand how a given material deforms with increasing loads.'

The NCERT states, 'In the region between O to A, ... The body regains its original dimensions when the applied force is removed. In this region, the solid behaves as an elastic body.' Elastic implies reversible.

According to the NCERT text, India was among the first countries to initiate action plans and programs at a national level to attain total reproductive health, and these programs were originally called 'family planning'.

The NCERT text states that RCH programmes aim at creating awareness and providing facilities for reproductively healthy society, including educating about birth control. A statutory ban on amniocentesis for sex-determination is mentioned to legally check the menace of female foeticides, indicating that promoting sex determination tests is against the objectives.

As per the NCERT text, 'According to the World Health Organisation (WHO), reproductive health means a total well-being in all aspects of reproduction, i.e., physical, emotional, behavioural and social.'

The text states, 'With the help of audio-visual and the print-media governmental and non-governmental agencies have taken various steps to create awareness among the people about reproduction-related aspects.'

The NCERT text emphasizes that 'Introduction of sex education in schools should also be encouraged to provide right information to the young so as to discourage children from believing in myths and having misconceptions about sex-related aspects.'

The text explicitly states that 'Better awareness about sex related matters, increased number of medically assisted deliveries and better post-natal care leading to decreased maternal and infant mortality rates, increased number of couples with small families, better detection and cure of STDs and overall increased medical facilities for all sex-related problems, etc. all indicate improved reproductive health of the society.'