2841. Stethoscope was invented by __ ?
✅ B. Rene Laennec
Author: Aurangzeb – Page 143
2842. The soul of chemistry is dealing with______?
✅ D. Composition and properties of matter
2843. The SI unit of Heat is___?
✅ C. Joule
2844. An area of microbiology that is concerned with the occurence of disease in human population is?
✅ C. Epidemiology
2845. How many layers does the earth have?
✅ C. 3
2846. Constellations referred to as zodiac, are_____?
✅ B. Imaginary regions that encompass the path of the planets
2847. Which of the following is not a chemical reaction ?
✅ A. Conversion of water into steam
2848. Which among the following types of lenses are prescribed by doctors for a patient suffering from astigmatism?
✅ C. Spherical Lens
2849. Where is the uvula located in human body?
✅ B. Throat
2850. Oil of vitriol is____?
✅ D. Sulfuric acid