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(GIST OF SCIENCE REPORTER) MCQs

(JUNE-2025)

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MCQs

Q. Consider the following statements regarding the Solar Cycle:

 1. The solar cycle is an approximately 11-year period marked by Key highlights fluctuations in the number of sunspots and solar activity on the Sun’s surface.

 2. During each solar cycle, the Sun’s magnetic field and polarity remain unchanged.

Which of the statements above is/are correct?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

Q. Which of the following propellant combinations is used in ISRO’s semicryogenic engine?

(a) Liquid Hydrogen and Liquid Oxygen  

(b) Liquid Oxygen and Kerosene

(c) Solid Propellant and Liquid Oxygen 

(d) Hydrazine and Nitrogen Tetroxide

Q. The S8 Tension is related to which of the following areas?

(a) Macroeconomics 

(b) Agriculture Genetics

(c) Cosmology

(d) Medical Biotechnology

Q. What is the primary proposed mechanism for the formation of the Bullseye Galaxy’s unusual multi-ring structure?

 (a) Gradual accretion of gas and dust from intergalactic space causing star formation in waves.

 (b) A close gravitational encounter with a massive galaxy causing tidal forces to shape the disk.

 (c) A direct, head-on passage of a blue dwarf galaxy through its centre around 50 million years ago.

 (d) Regular cyclical processes within the galaxy’s core cause stars to form in expanding rings over millions of years.

Q. “2024 YR4”, recently seen in the news, is a: 

 (a) AI Microchip Processor

 (b) Communication Satellite

 (c) Near-Earth Asteroid

 (d) Earth-Sized Planet

Q. Which of the following best describes the function of small interfering RNAs (siRNAs) in plant defence mechanisms?

 (a) They encode proteins that directly attack pathogens.

 (b) They guide the degradation of specific viral RNA sequences.

 (c) They serve as templates for viral replication.

 (d) They inhibit the synthesis of plant structural proteins.

Q. Consider the following:

1. Shrinking grazing areas 

2. Climatic shifts 

3. Diseases

4. Genetic erosion

How many of the above are threats to Yak populations?

(a) Only one

(b) Only two

(c) Only three

(d) All four

Q. With reference to Semaglutide, recently seen in the news, consider the following statements:

 1. Semaglutide is a GLP-1 receptor agonist used in the treatment of both type 2 diabetes and obesity.

 2. It works by suppressing insulin secretion and accelerating gastric emptying.

 3. In India, Semaglutide is available only in injectable form.

 4. Clinical trials have shown that it can reduce cardiovascular risks in diabetic patients.

Which of the statements given above are correct?

(a) 1 and 2 only 

(b) 1 and 4 only

(c) 2 and 3 only 

(d) 1, 3 and 4 only

Q. Consider the following statements regarding Nipah Virus:

 1. Nipah Virus is a zoonotic virus transmitted primarily from bats to humans.

 2. There are currently no drugs or vaccines specific for Nipah virus infection.

Which of the statements above is/are correct? 

(a) 1 only 

(b) 2 only

(c) Both 1 and 2 

(d) Neither 1 nor 2

Q. Which of the following statements about Tuberculosis (TB) is correct?

(a) TB is caused by a virus.

(b) TB primarily affects the liver.

(c) TB spreads through contaminated water.  

(d) TB is an airborne bacterial infection.

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Courtesy: Science Reporter