(Q).
Q: What (nh3) is one of the few thermodynamically stable binary compounds of nitrogen with a nonmetal? Choices: - liquid nitrogen - acetic acid - nitrous oxide - ammonia A:
(A).
ammonia

(Q).
Q: What human disease is caused by a defective enzyme that is unable to produce melanin, the pigment responsible for the color of skin and hair? Choices: - hemophilia - anemia - mutations - albinism A:
(A).
albinism

(Q).
Q: The neck of the uterus, called the cervix, opens into what? Choices: - bladder - testicle - retina - vagina A:
(A).
vagina