Bal81. What is night blindness ? What causes night blindness?32. Name the disease caused by the deficiency of :01) Vitamin A(b) Vitamin B1 (c) Vitamin C (d) Vitamin D2 Name the vitamin whose deficiency causes the disease:(..) beri-beri(b) scurvy(c) rickets (d) night blindness34. Mention some effects of the deficiency of calcium in the diet.35. What is the cause of cretinism ? Write the symptoms of cretinism36. What is the cause of goitre ? Write the main symptom of goitre.37. The neck of a person appears to be swollen. Name the deficiency disease he is suffering from. What is thecause of this disease ?Long Answer Type Questions38. What is a balanced diet? How does the balanced diet of a child differ from that of a grown up man?39. State two beneficial effects of cooking food. Name two cooking practices which lead to the loss of nutrientsin food materials.40. What is the cause of the disease known as beri-beri? Write the main symptoms of beri-beri disease.41. Name the disease caused by the deficiency of proteins in the diet of children. Give the symptoms of proteindeficiency in children.ion​