56.When a colourbind male marries a normal woman not carrying the gene for colourblindness, their offsprings will be :

57.Which of the following is used as a moderator in nuclear reactor ?

58.The most important requirement for the people of a flood hit area is :

59.Mesons are found in :

60.Which of the following are true about kwashiorkar disease ? 1. It occurs in infants upto 1 year of age.2. It is characterised by oedema i.e. swelling of the body.3. The skin of the person suffering from it becomes dry and hair turns reddish.4. It can be cured by giving a protein-rich diet.