Previous year MCQs

General science UPPSC 2005 GS-I
Question

Pyrethrin used in mosquito coil is obtained from

Answer & Solution

Answer: (Detailed Solution Below)

Option A: a seed plant

Detailed Solution:

The correct answer is “a seed plant”.
Pyrethrin used in mosquito coils is obtained from the seed cases of the perennial plant Chrysanthemum cinerariaefolium, also known as Pyrethrum cinerariaefolium. This plant is native to Eastern Europe and Asia and has been used as an insecticide for thousands of years.

Similar Questions:

Match List I with List II and select the correct answer from the code given below:
List-I - List-II

A. Hormone - 1. Lipase
B. Enzyme - 2. Testosterone
C. Phospholipid - 3. Lecithin
D. Polymer - 4. Polyethylene

Code:
A B C D
  1. A) 2 1 3 4
  2. B) 4 1 2 2
  3. C) 2 3 4 2
  4. D) 1 2 3 1
Consider the following statements and give the answer with the help of codes given below:

Assertion (A): Only one side of the moon's surface is visible from the earth.
Reason (R): The period of rotation of the moon on its axis is equal to the period of its revolution round the earth.

Code:
  1. A) Both A and R are correct and R is the correct explanation of A.
  2. B) Both A and R are correct but R is not the correct explanation of A.
  3. C) A is correct but R is wrong.
  4. D) A is wrong but R is correct.
The length of its day and tilt of its axis are almost identical to those of the earth. This is true of:
  1. A) Uranus
  2. B) Neptune
  3. C) Saturn
  4. D) Mars
In wind power, which form of energy is converted into electrical energy?
  1. A) Kinetic energy
  2. B) Potential energy
  3. C) Solar energy
  4. D) Radiant energy
Who had proposed for the first time the double helix model of DNA?
  1. A) Watson and Crick
  2. B) Fisher and Haldoni
  3. C) Lam ark and Darwin
  4. D) Hugo de Vries
Which one of the following chemicals helps in fruit ripening?
  1. A) Ethephon
  2. B) Atrazine
  3. C) Isoproturan
  4. D) Malathion
Sonagiri, the abode of 108 Jain temples, lies in the close proximity of:
  1. A) Datia
  2. B) Jhansi
  3. C) Orchha
  4. D) Lalitpur
The only vein that carries oxygenated blood is:
  1. A) Pulmonary vein
  2. B) Cystic vein
  3. C) Cardiac vein
  4. D) Hepatic Portal vein
Assertion (A): The Ganga is a highly polluted river.
Reason (R): The holier the river, the more polluted it is.

Select the correct answer from the following 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
Which one of the following regions of the U.S.A. is known as "Tornado Alley"?
  1. A) Atlantic Seaboard
  2. B) Pacific Coast
  3. C) Mississippi Plains
  4. D) Alaska
Match List-I with List-II and select the correct answer from the code given below the lists:
List-I(Physical quantities) - List-II (Units)

A. Acceleration - 1. Joule
B. Force - 2. Newton second
C. Work done - 3. Newton
D. Impulse - 4. Metre/second2

Code:
A B C D
  1. A) 1 2 3 4
  2. B) 2 1 4 3
  3. C) 4 3 1 2
  4. D) 3 4 2 1
When a glass rod is placed in steam, its length increases but its width:
  1. A) remains unchanged
  2. B) decreases
  3. C) increases
  4. D) becomes irregular