Previous year MCQs

General science UPPSC 1995 GS-I
Question

Which one of the following minerals is necessary to control heart beat?

Answer & Solution

Answer: (Detailed Solution Below)

Option C: Potassium

Detailed Solution:

The correct answer is “Potassium”.
Potassium is essential for regulating the heartbeat. It helps maintain the correct balance of fluids inside and outside of cells, which is crucial for the normal rhythm of the heart.

Similar Questions:

Assertion 'A' and Reason 'R' are given below. Study them and choose the correct answer from the codes given below:

Assertion (A): Lightning conductors prevent buildings from damages.
Reason (R): It passes the charge to the earth.

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 joint where the neck joins the head is:
  1. A) Pivotal joint
  2. B) Saddle joint
  3. C) Hinge joint
  4. D) Ball and socket joint
The Xylem in plants is responsible for transporting -
  1. A) Water
  2. B) Oxygen
  3. C) Amino Acid
  4. D) Food
Photovoltaic cells are:
  1. A) Solar cells
  2. B) Thermal cells
  3. C) Sulphur cells
  4. D) Molar cells
The disease-causing microorganism among these is:
  1. A) Archaea
  2. B) Pathogens
  3. C) Bacteria
  4. D) Protozoa
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.
Who amongst the following benefits most from inflation?
  1. A) Creditors
  2. B) Debtors
  3. C) Saving Bank Account Holders
  4. D) Government Pensioners
Wilhelm Rontgen invented
  1. A) Radio
  2. B) X-Ray Machine
  3. C) Electric Bulb
  4. D) Electric Motor
During last 25 years, the development of tubewell irrigation has been most spectacular in:
  1. A) Ganga-Ghaghra Doab
  2. B) Ganga-Yamuna Doab
  3. C) Saryupar Plain
  4. D) Bundelkhand
Which one of the following atmospheric change takes place due to the greenhouse effect?
  1. A) Increase in carbon dioxide concentration in the atmosphere
  2. B) Increase in humidity in the atmosphere
  3. C) Increase in biological population
  4. D) Increase in wind speed
Chemical name of limestone is?
  1. A) Calcium carbonate
  2. B) Magnesium chloride
  3. C) Sodium chloride
  4. D) Sodium sulphide
Which one of the following is associated with 'Albedo'?
  1. A) Transmitting power
  2. B) Absorbing power
  3. C) Emissive power
  4. D) Reflecting power