Previous year MCQs

General science UPPSC 2008 GS-I
Question

Radar is used mainly for:

Answer & Solution

Answer: (Detailed Solution Below)

Option C: determining the presence and location of objects with radio waves

Detailed Solution:

The correct answer is “determining the presence and location of objects with radio waves”.
Radar, or Radio Detection and Ranging, is used to determine the presence and location of objects using radio waves. It can also determine the range, angle, and velocity of objects.

Similar Questions:

Match List-I with List-II and select the correct answer using the codes given below:
(Metal) (Property)
List I - List II

A) Sodium - 1) Good conductor of electricity
B) Mercury - 2) Liquid at room temperature
C) Silver - 3) Poor conductor of heat
D) Lead - 4) Can be easily cut with knife
  1. A) 2 3 1 4
  2. B) 1 4 3 2
  3. C) 4 2 1 3
  4. D) 4 1 2 3
The age of tree, in years, can be ascertained by:
  1. A) its weight
  2. B) its height
  3. C) the number of its annular rings
  4. D) length of its root
The stones present in the gall bladder affect the digestion of:
  1. A) Protein
  2. B) Carbohydrate
  3. C) Fat
  4. D) Nucleic acid
Black-hole is:
  1. A) a flight recorder in aeroplane
  2. B) a spot on the sun
  3. C) a place in Antarctica
  4. D) a collapsed star
When does heart rest?
  1. A) Never
  2. B) While sleeping
  3. C) Between two beats
  4. D) While doing yoga
The temperature of the human body:
  1. A) decreases in winters
  2. B) increases in summers
  3. C) neither decreases in winters nor increases in summers
  4. D) increases in winters
The Xylem in plants is responsible for transporting -
  1. A) Water
  2. B) Oxygen
  3. C) Amino Acid
  4. D) Food
Tapa cloth is obtained from the plants of which one of the following family?
  1. A) Asclepiadaceae
  2. B) Moraceae
  3. C) Graminae
  4. D) Malvaceae
Which of the following is correct?
  1. A) All the blood in the body is absorbed through the kidneys
  2. B) All the blood in the body passes through the kidneys
  3. C) All the blood in the body is filtered through the kidneys
  4. D) All the blood in the body is made through the kidneys
Assertion (A): The atmosphere receives most of the heat only indirectly from the sun and directly from the earth's surface.
Reason (R): The conversion from shortwave solar to long-wave terrestrial energy takes place at the earth's surface.

Code:
  1. A) Both A and R are true and R is the correct explanation of A
  2. B) Both A and R are true but R is not the correct explanation of A
  3. C) A is true but R is false
  4. D) A is false but R is true
The G-8 group of countries includes:
  1. A) Britain, China, Germany and Japan
  2. B) Britain, Japan, South Africa and USA
  3. C) Britain, France, China and Russia
  4. D) Britain, Canada, Germany and Italy
Select the State from amongst the following, with the maximum number of wild-life sanctuaries.
  1. A) Uttar Pradesh
  2. B) Rajasthan
  3. C) Madhya Pradesh
  4. D) Maharashtra