Previous year MCQs

General science UPPSC 2017 GS-I
Question

The cause of sweet taste in fruits is:

Answer & Solution

Answer: (Detailed Solution Below)

Option D: Fructose

Detailed Solution:

The correct answer is “Fructose”.
Fructose is the primary sugar responsible for the sweet taste in fruits. It is also found in honey and is considered the sweetest natural sugar.
Sugar Role
Fructose A naturally occurring sugar found in many fruits, contributing to their sweet taste.
Maltose A disaccharide sugar found in malted foods and beverages, but not the primary sugar in most fruits.
Ribose A sugar found in RNA but not significant in contributing to the sweetness of fruits.
Lactose A sugar found in milk and dairy products, not commonly found in significant amounts in fruits.

Similar Questions:

Which of the following statements are correct? Select the correct answer from the codes given below:

1. Femur is the longest bone, in the human body.
2. Cholera is a disease caused by bacteria.
3. "Athletic's" foot is a disease caused by virus.

Codes:
  1. A) 1, 2 and 3
  2. B) 1 and 3
  3. C) 1 and 2
  4. D) 2 and 3
Which of the following air pollution gets dissolve in haemoglobin of the blood more rapidly than oxygen?
  1. A) PAN
  2. B) Carbon dioxide
  3. C) Carbon monoxide
  4. D) Ozone
In which year was Rajya Sabha constituted for the first time?
  1. A) 1950
  2. B) 1951
  3. C) 1952
  4. D) 1953
The stones present in the gall bladder affect the digestion of:
  1. A) Protein
  2. B) Carbohydrate
  3. C) Fat
  4. D) Nucleic acid
The book 'A Brief History of Time' has been written by whom?
  1. A) Stephen Hawking
  2. B) J.V. Narlikar
  3. C) C.V. Raman
  4. D) S. Bose
Which acid is used in photography:
  1. A) Formic acid
  2. B) Oxalic acid
  3. C) Citric acid
  4. D) Acetic acid
According to the National Family Health Survey – 3, private medical sector is the primary source of health care in India for:
  1. A) 50% of households in urban areas
  2. B) 60% of households in urban areas
  3. C) 70% of households in urban areas
  4. D) 80% of households in urban areas
In cold countries alcohol is preferred to mercury as a thermometric liquid because:
  1. A) alcohol has a lower freezing point
  2. B) alcohol is a better conductor of heat
  3. C) alcohol is cheaper than mercury
  4. D) the world production of alcohol is greater than that of mercury
Bronze (Brass) is a combination of?
  1. A) Tin + Silver
  2. B) Tin + Zinc
  3. C) Tin + copper
  4. D) Zinc + Copper
Use of polished rice in human diet causes following diseases:
  1. A) Rickets
  2. B) Anemia
  3. C) Goitre
  4. D) Beriberi
Without green house effect, the average temperature of earth surface would be:
  1. A) 0°C
  2. B) -18°C
  3. C) 5°C
  4. D) -20°C
Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I List-II
(Naturally occurring substance) - (Elements present)

A. Diamond - 1. Calcium
B. Marble - 2. Silicon
C. Sand - 3. Aluminum
D. Ruby 4. Carbon

Codes:
A B C D
  1. A) 3 1 2 4
  2. B) 4 2 1 3
  3. C) 2 1 3 4
  4. D) 4 1 2 3