Previous year MCQs

General science UPPSC 2018 GS-I
Question

Which of the following was invented by Wilhelm Roentgen?

Answer & Solution

Answer: (Detailed Solution Below)

Option B: X-Ray Machine

Detailed Solution:

The correct answer is “X-Ray Machine”.
X-Ray Machine was invented by Wilhelm Roentgen. He discovered X-rays in 1895, a type of electromagnetic radiation that can penetrate many materials.

This led to the development of X-ray machines, which are widely used in medical imaging and other fields.

Similar Questions:

Which of the following vitamins is essential for normal vision?
  1. A) Folic acid
  2. B) Riboflavin
  3. C) Niacin
  4. D) Retinol
The temperature for keep food fresh in the refrigerator is:
  1. A) 4°C
  2. B) 8°C
  3. C) 0°C
  4. D) 10°C
Compressed Natural Gas (CNG) is mainly composed of
  1. A) Methane
  2. B) Propane
  3. C) Ethane
  4. D) Butane
The "blue moon" phenomenon occurs:
  1. A) When two full moons occur in the same month
  2. B) When four full moons appear in two consecutive months of the same calendar year.
  3. C) when two full moons appear in the same month thrice in a calendar year
  4. D) None of the above.
The Ozone layer in the atmosphere:
  1. A) Causes rainfall
  2. B) Creates pollution
  3. C) Protects life on earth from ultraviolet radiation
  4. D) Produces oxygen in the atmosphere
Which of the following cities in Uttar Pradesh has NOT been selected for development under the Smart City Development Programme of the Central Government?
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  2. B) Prayagraj
  3. C) Ghaziabad
  4. D) Kanpur
Which of the following statements about Bacteria is correct?
  1. A) They are on the border line of living and non-living
  2. B) They are on the border line of plants and animals
  3. C) They are on the border line of flowering and non flowering plants
  4. D) None of the above
Which one of the following is not correctly matched:
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  2. B) saffron–seeds
  3. C) opium–poppy of opium
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It is comfortable to wear white clothes in summer because:
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  2. B) Disfigure all the heat transmitted in the body
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Match List-I and List-II and select the correct answer from the code given below the lists:
List-I (Plant) - List-II (Use)

A. Brahmi - 1. Anti-diabetic
B. Sadabahar - 2. Carminative
C. Pudina - 3. Expectorant
D. Tulsi - 4. Brain Tonic

Code:
A B C D
  1. A) 1 2 3 4
  2. B) 4 1 2 3
  3. C) 3 2 1 4
  4. D) 2 4 3 1
Parliament can Amend the provision on official language of India under the Constitution by:
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  2. B) 2/3rd majority
  3. C) 3/4th majority
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Vinegar is an aqueous solution of:
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  2. B) Citric acid
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