Most Important Science & Geography MCQs for Bihar APO Prelims 2026

The General Awareness section of the Bihar APO Prelims plays a crucial role in improving your overall score. Every year, questions are asked from Indian Geography and General Science, making these subjects highly scoring if prepared strategically.

Prepare the most important Geography and Science Multiple Choice Questions (MCQs) based on previous year trends and expected topics for the Bihar APO examination. Rather than memorizing isolated facts, you'll understand the concepts behind each answer, making revision easier and more effective.

Bihar APO Prelims 2026 Geography MCQs

Practice some of the most important Geography MCQs for the Bihar APO Prelims 2026. These questions are selected from a one-shot revision session and cover frequently tested topics in the General Awareness section.

Q. Which of the following rivers is not an Himalayan river?

1. Alaknanda

2. Gandak

3. Spiti

4. Mahi 

Answer: 4) Mahi
Explanation: Mahi is a Peninsular river originating from the Vindhya Range in Madhya Pradesh, flowing through Rajasthan and Gujarat before joining the Arabian Sea. Alaknanda, Gandak, and Spiti are all Himalayan rivers.

Q. The northern part of the western coast is called ________.

1. Kannad Plain 

2. Malabar Coast

3. Konkan

4. Coromandel Coast

Answer: 3) Konkan
Explanation: The western coast of India is divided into two parts — the northern part is called Konkan (from Daman to Goa) and the southern part is called Malabar Coast. Coromandel Coast is on the eastern side, and Kannad Plain is a different region altogether.

Q. Which among the following is the longest river in Europe?

1. Danube

2. Rhine

3. Elbe

4. Volga

Answer: 4) Volga
Explanation: The Volga River is the longest river in Europe at approximately 3,531 km, flowing through Russia into the Caspian Sea. Danube is the second longest, while Rhine and Elbe are significantly shorter rivers.

Q. Which of the following is NOT a west coast port of India?

1. Kandla 

2. Mazagaon 

3. Haldia 

4. Marmagao 

Answer: 3) Haldia
Explanation: Haldia is a port located on the eastern coast of India in West Bengal, near Kolkata. Kandla (Gujarat), Mazagaon/Mumbai (Maharashtra), and Marmagao (Goa) are all ports situated on the western coast of India.

Q. A tropical deciduous plant special to the Deccan plateau is

1. Teak 

2. Shisham 

3. Sandalwood 

4. Sal 

Answer: 3) Sandalwood
Explanation: Sandalwood is the tropical deciduous plant specially associated with the Deccan Plateau, particularly Karnataka. Teak is found in Madhya Pradesh and Maharashtra, Shisham in the Himalayan foothills, and Sal in northeastern and central India.

Bihar APO Prelims 2026 Science MCQs

Practice the most important Science MCQs for the Bihar APO Prelims 2026. These exam-oriented questions cover Physics, Chemistry, Biology, and other General Science topics that are frequently asked in the General Awareness section.

Q. The Highest value of 'g' is at:

1. Center of the Earth

2. At the poles

3. At the equator

4. Is same everywhere

Answer: 2) At the poles
Explanation: The value of 'g' is highest at the poles because Earth is slightly flattened at the poles, making the poles closer to Earth's center. Since g is inversely proportional to the square of Earth's radius, the smaller radius at poles gives the highest value of g (~9.83 m/s²).

Q. Which of the following is usually considered as "Pseudo force"?

1. Centrifugal force

2. Centripetal force

3. Both of the above

4. None of the above

Answer: 1) Centrifugal force
Explanation: Centrifugal force is considered a pseudo (fictitious) force because it does not actually exist in an inertial frame of reference. It only appears to act in a rotating (non-inertial) frame of reference. Centripetal force is a real force directed toward the center of circular motion.

Q. Quinine is extracted from the bark of ________ tree.

1. Cinchona

2. Neem

3. Cedar

4. None of the above

Answer: 1) Cinchona
Explanation: Quinine, the antimalarial drug, is extracted from the bark of the Cinchona tree. It was one of the earliest effective treatments for malaria and is still used today.

Q. Escape velocity on the earth's surface is ________.

1. 4.9 km/s

2. 5 km/s

3. 11.2 km/s

4. 10.2 km/s

Answer: 3) 11.2 km/s
Explanation: The escape velocity on Earth's surface is 11.2 km/s. This is the minimum velocity required for an object to escape Earth's gravitational pull without any further propulsion.

Q. The deficiency of ________ in human body may lead to Xerophthalmia.

1. Vitamin C

2. Vitamin B

3. Vitamin D

4. Vitamin A

Answer: 4) Vitamin A
Explanation: Xerophthalmia (dryness and ulceration of the cornea leading to blindness) is caused by deficiency of Vitamin A. Vitamin A is essential for maintaining healthy vision and eye moisture. It is one of the most common causes of preventable blindness in children.

For the complete set of Geography and Science MCQs, including all remaining categories discussed in the one-shot revision session, watch the YouTube video