Previous year MCQs

General science UPPSC 1999 GS-I
Question

2, 4-D is:

Answer & Solution

Answer: (Detailed Solution Below)

Option D: a herbicide

Detailed Solution:

The correct answer is “a herbicide”.
2,4-D is a herbicide. It's a chemical used to kill unwanted plants.

Similar Questions:

Which of the following is an insectivorous plant?
  1. A) Nyctanthes
  2. B) Nelumbo
  3. C) Nicotiana
  4. D) Neperithes
Which one of the following organic acids is abundant in grapes, tamarind (इमली) and banana?
  1. A) Acetic acid
  2. B) Citric acid
  3. C) Lactic acid
  4. D) Tartaric acid
Which one of the following statements is correct?
  1. A) DDT is antibacterial compound
  2. B) TNT is an insecticide
  3. C) RDX is an explosive
  4. D) LSD is an antiviral compound
Cryogenic engine is used for
  1. A) Boeing
  2. B) As a fast rail engine
  3. C) In space shuttle
  4. D) In Nuclear furnace
Which one of the following pairs is correctly matched?
  1. A) Pneumonia - Lungs
  2. B) Cataract - Thyroid gland
  3. C) Jaundice - Eye
  4. D) Diabetes - Liver
Which of the following vitamins is essential for normal vision?
  1. A) Folic acid
  2. B) Riboflavin
  3. C) Niacin
  4. D) Retinol
Which one of the following diseases is not transmitted by tiger mosquitoes?
  1. A) Yellow fever
  2. B) Dengue
  3. C) Chikungunya
  4. D) Japanese Encephalitis
'Cloves' are:
  1. A) nodules of stem
  2. B) leaves
  3. C) nodules of roots
  4. D) dried flowers
Consider the following statements:

Assertion (A): If Ice collects on the freeze the cooling in the refrigerator is affected adversely.
Reason (R) : Ice is a poor conductor.

Select the correct answer using the codes given below:
Codes:
  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.
Match List I with List II and select the correct answer from the code given below:
List-I - List-II

A. Dry Ice - 1. Treatment of Cancer
B. Gene therapy - 2. Freezing living bodies to be revived later
C. Cryonics - 3. Solid carbon dioxide
D. Cobalt-60 - 4. Treatment of blood diseases

A B C D
  1. A) 1 2 3 4
  2. B) 4 3 2 1
  3. C) 3 4 2 1
  4. D) 2 1 4 3
Which of the following contains carbon?
  1. A) Lignite
  2. B) Tin
  3. C) Silver
  4. D) Iron
When there is a decrease in the concentration of oxygen in the blood, the rate of breathing:
  1. A) decreases
  2. B) increases
  3. C) does not change
  4. D) first decreases, then increases