Previous year MCQs

General science UPPSC 2024 GS-I
Question

The formula of baking soda is:

Answer & Solution

Answer: (Detailed Solution Below)

Option D: NaHCO3

Detailed Solution:

The correct answer is “NaHCO3”.

Baking soda is chemically known as sodium bicarbonate, with the formula NaHCO₃. It is commonly used in cooking as a leavening agent, helping dough rise by releasing carbon dioxide when combined with an acid.

Similar Questions:

Consider the following statement about haemoglobin and select the correct answer from the code given below:

1. It contains iron.
2. It imparts red colour to the blood.
3. It provides immunity against certain diseases.
4. It is a career of oxygen in the blood.

Code:
  1. A) 1, 2 and 3
  2. B) 2, 3 and 4
  3. C) 1, 3 and 4
  4. D) 1, 2 and 4
A man feels unpleasant due to humidity and heat. The reason for this is:
  1. A) More sweating
  2. B) Less sweating
  3. C) Sweat does not evaporate due to humidity
  4. D) Sweat is not formed due to humidity
Which one of the following is not responsible for the depletion of ozone layer:
  1. A) CFC-12 used in refrigerators
  2. B) Methyl chloroform used as solvent
  3. C) HALON-1211 used in fire fighting
  4. D) Nitrous oxide
Which of the following hormones is secreted by the Beta cell of Islet of Langerhans of Pancreas?
  1. A) Glucagan
  2. B) Adrenalin
  3. C) Insulin
  4. D) Aldosterone
Consider the following statements with reference to Upper Gangetic agro-climatic region:

1. This region encompasses central and western Uttar Pradesh.
2. This region has more than 130% irrigation intensity and 140% cropping intensity.

Which of the above statements is/are correct?
  1. A) Both 1 and 2
  2. B) Neither 1 nor 2
  3. C) Only 1
  4. D) Only 2
Consider the following statements and select the correct answer from the code given below:

1. Presence of calcium sulphate makes water hard and unfit for use.
2. Diamond is harder than copper and iron.
3. The main component of air is oxygen.
4. Nitrogen is used in the preparation of vegetable ghee.

Code:
  1. A) 1 and 2
  2. B) 3 and 4
  3. C) 1 and 3
  4. D) 2 and 4
Which of the following is not related to the astronomical theories of climate change?
  1. A) Eccentricity of earth's orbit
  2. B) Obliquity of earth's rotational axis
  3. C) Precession of equinoxes
  4. D) Solar irradiance
Thermodynamically the most stable form of carbon is
  1. A) Coal
  2. B) Fullerenes
  3. C) Graphite
  4. D) Diamond
Which of the following is NOT mosquito borne disease?
  1. A) Dengue fever
  2. B) Filariasis
  3. C) Sleeping sickness
  4. D) Malaria
Some marine animals and insects emit light from their body in darkness. This phenomenon is known as.
  1. A) Phosphorescence
  2. B) Bioluminescence
  3. C) Both (a) and (b)
  4. D) None of these
Match List-I with List-il and choose the correct answer using the codes given below the lists:
List-I - List-il
(Coal Resources) (States)

A. Hutar - 1. Madhya Pradesh
B. Ib River - 2. Chhattisgarh
C. Tatapani - Ramkola - 3. Odisha
D. Umaria - 4. Jharkhand

Codes:
A B C D
  1. A) 3,2,4,1
  2. B) 2,1,3,4
  3. C) 4,3,2,1
  4. D) 4,2,3,1
Which of the following pairs is not correctly matched?
Capital-Country
  1. A) Naypyidaw — Myanmar
  2. B) Khartoum —Ethiopia
  3. C) Dublin — Ireland
  4. D) Ottawa — Canada