Previous year MCQs

UPPSC 2022 GS-I General science
Question

Which of the following material is bio-degradable ?

Answer & Solution

Answer: (Detailed Solution Below)

Option D: Wool

Detailed Solution:

The correct answer is “Wool”.
Out of the given options, wool is biodegradable.

Wool is a natural protein fiber and can be broken down by microorganisms over time.

Glass, plastic, and aluminum are non-biodegradable materials. Glass is made from sand and does not decompose, but it can be recycled. Plastic and aluminum also do not decompose easily and can take hundreds of years to break down in the environment.

Similar Questions:

Which among the following compounds is the main constituent of natural gas ?
  1. A) Butane
  2. B) Hexane
  3. C) Benzene
  4. D) Methane
Consider the following statements about haemoglobin:

1) It carries oxygen in the blood.
2) It is iron containing compound.
3) It provides immunity against certain disease.
4) It imparts red colour to the blood.

The correct statements out of these are:
  1. A) 1,2 and 3
  2. B) 2, 3 and 4
  3. C) 1, 3 and 4
  4. D) 1, 2 and 4
Match List-I with List-II and select the correct answer using the codes given below the lists.
List-I List-II
(Disease) (Cause)

A. Marasmus - 1. Prolonged Starvation
B. Kwashiorkor - 2. Protein Deficiency
C. T.B. - 3. Bacterial Infection
D. Hepatitis B - 4. Viral Infection
  1. A) 1 2 3 4
  2. B) 2 1 3 4
  3. C) 4 2 3 1
  4. D) 2 4 1 3
The atmosphere of Saturn contains which one of the following gas in large quantity ?
  1. A) Sulphur dioxide
  2. B) Carbon monoxide
  3. C) Methane
  4. D) Nitrogen
Blank capsules used in dispensing are made of:
  1. A) egg-white
  2. B) gum
  3. C) starch
  4. D) gelatine
Desert plants have longer root system because:
  1. A) High temperature of the soil encourages root growth
  2. B) Root grow in search of water
  3. C) Soil does not contain water, hence becomes compact and presses the roots to grow longer
  4. D) Roots move opposite to the solar heat
Soundwaves:
  1. A) can travel in vacuum
  2. B) can travel in solids
  3. C) can travel only in gases
  4. D) can travel both in solid and gaseous medium
Which one of the following is a plant hormone?
  1. A) Insulin
  2. B) Thyroxin
  3. C) Oestrogen
  4. D) Cytokinin
For human blood transfusion, which blood group is known as universal donor?
  1. A) B+ Group
  2. B) O Group
  3. C) AB Group
  4. D) A+ Group
Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R).

Assertion (A): Maximum number of the species of butterflies are found in tropical countries.
Reason (R): Butterflies can not tolerate low temperatures.

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
The Mutation Theory of Evolution was enunciated by
  1. A) Huxley
  2. B) Darwin
  3. C) Lamarck
  4. D) Hugo de Vries
Expansion during heating
  1. A) Occurs only in solid
  2. B) Increases the weight of the material
  3. C) Decreases the density of the material
  4. D) Occurs at the same rate for all liquids and solids