Previous year MCQs

General science UPPSC 2013 GS-I
Question

The mirror used by a dentist to examine the teeth of patients is

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Concave

Detailed Solution:

The correct answer is “Concave”.
The dentist examines the patient's teeth through a concave mirror. A concave mirror is a spherical mirror with reflective surface curved inwards.

Similar Questions:

Compressed Natural Gas (CNG) is mainly composed of
  1. A) Methane
  2. B) Propane
  3. C) Ethane
  4. D) Butane
Which of the following vitamin is responsible for coagulation of blood in human being ?
  1. A) Vitamin K
  2. B) Vitamin E
  3. C) Vitamin A
  4. D) Vitamin C
The recently released film "Kai Po Che" is based on the novel
  1. A) Lashkar
  2. B) The loving Doll
  3. C) The Story of My Marriage
  4. D) The 3 Mistakes of My Life
Which type of vaccine protect against Diphtheria?
  1. A) Toxoid
  2. B) Live-attenuated
  3. C) mRNA
  4. D) Viral Vector
Arteether, a drug to cure malaria is obtained from a
  1. A) seed plant
  2. B) fungus
  3. C) Bacterium
  4. D) moss
When water is filled in a bottle and allowed to freeze, the bottle breaks because:
  1. A) Water expands on freezing
  2. B) Bottle contracts at freezing point
  3. C) Temperature outside the bottle is more than inside
  4. D) Water expands on heating
Which of the following substances is not a protein ?
  1. A) Cotton
  2. B) Hair
  3. C) Spider Silk
  4. D) Hoof
When the TV is switched ON then:
  1. A) Both audio and visuals start simultaneously
  2. B) The audio is heard immediately but the video is visible later because the video needs some practice time
  3. C) The visual starts immediately but audio is heard later because the sound travels less than the speed of light
  4. D) It depends on the brand of TV
The limit beyond which stars suffer internal collapse is called:
  1. A) Chandrashekhar limit
  2. B) Eddington limit
  3. C) Hoyle limit
  4. D) Fowler limit
Which of the following is an important source of Vitamin-E?
  1. A) Palm Oil
  2. B) Coconut oil
  3. C) Wheat germ oil
  4. D) Mustard oil
Who amongst the following is responsible for revenue sharing between the State Government and the Local Government?
  1. A) The Chief Minister
  2. B) The Governor
  3. C) The Finance Commission
  4. D) None of the above
Food gets cooked quickly in a pressure cooker because of:
  1. A) At high pressure water gets boiled at low temperature
  2. B) At high pressure water gets boiled at high temperature
  3. C) Water boils only at 100°C but the amount of heat is high of high pressure
  4. D) Convection currents are generated inside the cooker