Select the correct statement from the ones given below.
Barbiturates, when given to criminals, make them tell the truth.
Morphine is often given to persons, who have undergone surgery, as a pain killer.
Chewing tobacco lowers blood pressure and heart rate.
Cocaine is given to patients after surgery as it stimulates recovery.
Which group of three of the following five statements $(I-V)$ contains is correct regarding beriberi?
$I.$ A crippling disease prevalent among the native population of sub-Sahara Africa.
$II.$ A deficiency disease caused by lack of thiamine (vitamin- $B_{1}$ ).
$III.$ A nutritional disorder in infants and young children when the diet is persistantly deficient in essential protein.
$IV.$ Occurs in those countries where the staple diet is polished rice.
$V.$ The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure.
Infection of pneumonia occurs due to
After vaccination, the dose given for the immunization is known as
A person is suffering from frequent episodes of nasal discharge, nasal congestion, reddening of eyes and watery eyes. These are the symptoms of
Humoral antibodies are produced by