بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيم
20 Most Repeated Everyday Science MCQs for NTS, CSS, PMS, KPPSC, PPSC, ETEA, SPSC, BPSC, and FPSC Tests
Here are 20 most repeated Everyday Science MCQs designed specifically for competitive exams like NTS, CSS, PMS, KPPSC, PPSC, ETEA, SPSC, BPSC, and FPSC. These specific Everyday Science MCQs appear frequently across various testing boards in Pakistan.
Most Repeated Everyday Science MCQs
1
Which gas is the most abundant in the Earth's atmosphere?
Explanation
Correct Answer: Option C
2
A deficiency in Vitamin D causes which of the following diseases?
Explanation
Correct Answer: Option B
Vitamin D is crucial for calcium absorption. Its deficiency leads to rickets in children (softening of bones) and osteomalacia in adults. Scurvy is caused by Vitamin C deficiency, and night blindness by Vitamin A deficiency.
3
What is the SI unit of electric current?
Explanation
Correct Answer: Option B
The Ampere (often shortened to "amp") is the base unit of electric current in the International System of Units (SI). Volts measure voltage, Ohms measure resistance, and Watts measure power.
4
Which gland is commonly referred to as the "master gland" of the human body?
Explanation
Correct Answer: Option C
The pituitary gland is called the master gland because the hormones it produces control and regulate the functions of many other endocrine glands in the body.
5
Sound travels fastest in which of the following mediums?
Explanation
Correct Answer: Option D
Sound waves are mechanical waves that require a medium to travel. They travel fastest in solids (like steel) because the molecules are tightly packed together, allowing the vibration to transfer quickly. Sound cannot travel in a vacuum at all.
6
Which planet in our solar system is known as the "Red Planet"?
Explanation
Correct Answer: Option C
7
A person with which blood group is considered a "Universal Donor"?
Explanation
Correct Answer: Option C
8
Which cell organelle is known as the "powerhouse of the cell"?
Explanation
Correct Answer: Option C
Mitochondria generate most of the chemical energy needed to power the cell's biochemical reactions, storing it in a molecule called ATP.
9
What is the common chemical name for baking soda?
Explanation
Correct Answer: Option B
Baking soda is sodium bicarbonate ($NaHCO_3$). Sodium carbonate ($Na_2CO_3$) is commonly known as washing soda.
10
A "Light Year" is used as a unit to measure:
Explanation
Correct Answer: Option C
Despite the word "year," a light year measures distance. It is the distance that light travels in a vacuum in one Earth year (about 9.46 trillion kilometers).
11
What is the longest and strongest bone in the human body?
Explanation
Correct Answer: Option C
The femur, or thigh bone, is the longest, heaviest, and strongest bone in the human body.
12
Malaria is transmitted to humans by the bite of an infected female Anopheles mosquito. The actual disease is caused by a:
Explanation
Correct Answer: Option D
Malaria is caused by Plasmodium parasites, which are single-celled microorganisms classified as protozoa. The mosquito acts as a vector.
13
Which class of chemicals was primarily responsible for the depletion of the ozone layer?
Explanation
Correct Answer: Option C
14
In the human body, the digestion of proteins primarily begins in the:
Explanation
Correct Answer: Option B
While carbohydrate digestion begins in the mouth with saliva, protein digestion begins in the stomach through the action of hydrochloric acid and the enzyme pepsin.
15
Which is the hottest planet in our solar system?
Explanation
Correct Answer: Option B
Although Mercury is closer to the Sun, Venus is the hottest planet due to a dense atmosphere of carbon dioxide that creates a runaway greenhouse effect, trapping heat.
16
The instrument used to measure the intensity of earthquakes is called a:
Explanation
Correct Answer: Option B
A seismograph (or seismometer) records the seismic waves caused by an earthquake. A barometer measures atmospheric pressure, a hygrometer measures humidity, and an anemometer measures wind speed.
17
Which component of the blood is primarily responsible for blood clotting?
Explanation
Correct Answer: Option C
18
The image formed on the retina of the human eye is:
Explanation
Correct Answer: Option C
19
What is the primary gas that plants absorb from the atmosphere during photosynthesis?
Explanation
Correct Answer: Option C
During photosynthesis, plants take in carbon dioxide ($CO_2$) and water ($H_2O$) from the air and soil. They use sunlight to transform these into glucose (food) and release oxygen as a byproduct.
20
Which element is a liquid at room temperature?
Explanation
Correct Answer: Option B
%20for%20NTS,%20CSS,%20PMS,%20KPPSC,%20PPSC,%20ETEA,%20SPSC,%20BPSC%20and%20FPSC%20Exams.jpg)
.jpg)
No comments yet
Be the first to share your thoughts!