Previous year MCQs

General science UPPSC 2022 GS-I
Question

Solar energy is converted into electric energy through

Answer & Solution

Answer: (Detailed Solution Below)

Option D: Photo voltaic cells

Detailed Solution:

The correct answer is “Photo voltaic cells”.
Solar energy can be converted into electric energy through photovoltaic (PV) cells, also known as solar cells.

They are made up of semiconductor materials, such as silicon, that absorb photons from sunlight and release electrons. The released electrons can be harnessed as electric current.
Dry cells: These are common batteries used for portable devices but do not convert solar energy into electric energy.

Leclanche cells: This is a type of dry cell and is also used to store electrical energy but is not related to solar energy conversion.

Voltaic cells: These refer to any cell that converts chemical energy into electrical energy, such as galvanic cells, but they do not specifically relate to solar energy.

Similar Questions:

Main function of Dynamo is?
  1. A) To convert the mechanical energy into electric energy
  2. B) To convert the electric into mechanical energy
  3. C) High potential producing equipment
  4. D) Low potential producing equipment
Match list I with list II and select the correct answer from the code given below:
List-I (Acid) - List-II (Source)

A. Lactic acid - 1. Lemon
B. Acetic acid - 2. Rancid butter
C. Citric acid - 3. Milk
D. Butyric acid - 4. Vinegar

Code:
A B C D
  1. A) 1 4 3 4
  2. B) 3 4 1 2
  3. C) 2 3 4 2
  4. D) 3 2 3 1
When was the Panchayats (Extension to the Scheduled Areas) Act passed by Indian Parliament ?
  1. A) 1998
  2. B) 1996
  3. C) 1995
  4. D) 1993
Consider the following Political Parties and arrange them in the chronological order of their establishment.

I. Bahujan Samaj Party
II. Samajwadi Party
III. Telugu Desham Party
IV. All India Trinamool Congress

Select the correct answer from the code given below.
Code :
  1. A) III, I, II, IV
  2. B) II, I, III, IV
  3. C) III, II, I, IV
  4. D) I, II, III, IV
Given below are two statements, one labelled as:

Assertion (A): Human body synthesises all the vitamins required by it.
Reason (R): Vitamins are essential for proper growth of the body.

Select the correct answer from the codes give below:
  1. A) Both (A) and (R) are true and (R) is the correct explanation of (A)
  2. B) Both (A) and (R) re 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
Which religious group in India has its highest urban population ?
  1. A) Hindu
  2. B) Bauddh
  3. C) Christian
  4. D) Jain
Blank capsules used in dispensing are made of:
  1. A) egg-white
  2. B) gum
  3. C) starch
  4. D) gelatine
The nucleus of an atom consists of:
  1. A) Electrons and Neutrons
  2. B) Electrons and Protons
  3. C) Protons and Neutrons
  4. D) Protons and Radons
Statement (A): The signal of danger is made of red colour.
Reason (R): The scattering of red is least

Select the right answer with the help of code given below.
Code:
  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 globally programmed "Human Genome Project" deals with:
  1. A) establishment of a society of super-humans
  2. B) identification of races based on apartheid
  3. C) genetic improvement of human races
  4. D) identification and mapping of human genes and gene sequences
Medical students of India were brought to India from Ukraine by Indian Government under which the following operations ?
  1. A) Operation Godawari
  2. B) Operation Himalaya
  3. C) Operation Yamuna
  4. D) Operation Ganga
Which one of the following Noble Gases is not present in air?
  1. A) Helium
  2. B) Argon
  3. C) Radon
  4. D) Neon