Answer: C) Both A & B Explanation: Excretion rates of drugs vary greatly depending upon:   * The type of drug taken. * The medical condition of the person who took the drug.   Nonvolatile drugs are excreted in the body through renal excretion or through kidneys and bladder by means of urine. Other drugs are excreted either by means of sweat, bile, milk, saliva or other body fluids.

Answer: C) 180º Explanation: Angle traced by the hour hand in 6 hours =360o12×6 = 180o.

Answer: C) Helioseismology Explanation: Helioseismology is the study of the solar interior using observations of waves on the Sun's surface. It has done much to improve our understanding of the interior of the Sun, testing the physical inputs used to model stellar interiors and providing a detailed map of the Sun's structure and internal rotation.