Vasco de Gama $(1498)$ sailed to explore India with $180$ companions,but most of them died due to:

Which group of three of the following five statements $(1-5)$ contains all three correct statements regarding beri-beri?
$1.$ $A$ crippling disease prevalent among the native population of sub-Saharan Africa.
$2.$ $A$ deficiency disease caused by lack of thiamine (vitamin $B_1$).
$3.$ $A$ nutritional disorder in infants and young children when the diet is persistently deficient in essential protein.
$4.$ Occurs in those countries where the staple diet is polished rice.
$5.$ The symptoms are pain from neuritis,paralysis,muscle wasting,progressive oedema,mental deterioration,and finally heart failure.

$A$ balanced diet includes:

Beri-beri was discovered by

Which of the following are rich sources of vitamin $A$?
$I.$ Carrot
$II.$ Lemon
$III.$ Beans
$IV.$ Spinach

Which one of the following is a fat-soluble vitamin and its related deficiency disease?