Previous year MCQs

General science UPPSC 2020 GS-I
Question

Given below are two statements, one is labelled as Assertion (A) and other as Reason (R) :

Assertion (A): Invert sugar is more sweeter than sucrose.
Reason (R) : Invert sugar is obtained by the hydrolysis of sucrose.

Select the correct answer from the codes given below.
Codes :

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Both (A) and (R) are true but (R) is not the correct explanation of (A)

Detailed Solution:

The correct answer is “Both (A) and (R) are true but (R) is not the correct explanation of (A)”.
Invert sugar is sweeter than sucrose. This is primarily due to the fact that invert sugar is a mixture of glucose and fructose, both of which are sweeter than sucrose.

Invert sugar is obtained by the hydrolysis of sucrose, but it's not the main reason for the increased sweetness. The increased sweetness is primarily due to the composition of invert sugar, which includes fructose, a particularly sweet sugar.

Similar Questions:

Stars obtain their energy from:

1. Nuclear fusion
2. Gravitational contraction
3. Chemical reaction
4. Nuclear fission

Select your answer from the codes given below:
Codes:
  1. A) 1 and 2
  2. B) 1, 2 and 3
  3. C) 1 and 4
  4. D) 2 and 4
These days yellow lamps are frequently used as street light. Which one of the following is used in these lamps?
  1. A) Sodium
  2. B) Neon
  3. C) Hydrogen
  4. D) Nitrogen
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.
A person with vision defect 'Myopia' can see:
  1. A) nearby objects clearly
  2. B) distant objects clearly
  3. C) nearby as well as distant objects clearly
  4. D) neither nearby nor distant objects clearly
Which one of the following minerals is necessary to control heart beat?
  1. A) Sodium
  2. B) Sulphur
  3. C) Potassium
  4. D) Iron
When soggy biscuits are kept inside the fridge for sometime they become crisp because
  1. A) cooling releases extra moisture
  2. B) humidity inside the fridge is low and extra moisture is absorbed
  3. C) humidity inside the fridge is high and extra, moisture is absorbed
  4. D) pressure inside the fridge is high and helps in releasing extra moisture.
I.C. chips for computers are usually made of:
  1. A) leaf
  2. B) chromium
  3. C) silicon
  4. D) gold
Which of the following statements is NOT correct for National Pension Scheme for Retail Traders/ Shopkeepers and Self-employed persons?
  1. A) Those who are in age groups of 18 to 40 years are eligible.
  2. B) Their annual turnover should not exceed 1.5 crore rupees
  3. C) National Pension Scheme's member are also eligible
  4. D) It has a monthly minimum assured pension of Rs. 3000.00
Which of the following Indian States/Union Territories launched Electric Vehicle Policy on 7th August, 2020 ?
  1. A) Madhya Pradesh
  2. B) Uttar Pradesh
  3. C) Delhi
  4. D) Tamil Nadu
Which of the following statements is not true?
  1. A) Chromosomes are composed of DNA and Protein.
  2. B) Nucleus of a cell does not play a role in cellular reproduction.
  3. C) Chromosomes contain information for inheritance.
  4. D) Functional segment of DNA is called genes.
When the TV is switched ON then:
  1. A) Both audio and visuals start simultaneously
  2. B) The audio is heard immediately but the video is visible later because the video needs some practice time
  3. C) The visual starts immediately but audio is heard later because the sound travels less than the speed of light
  4. D) It depends on the brand of TV
Which of the following substances is obtained from a tree ?
  1. A) Asafoetida
  2. B) Bitumen
  3. C) Tincal
  4. D) None of the above