DCOA Mixed Practice Test #403

Question 1

During a Gram staining procedure, a microbiologist observes purple-colored, rod-shaped bacteria under the microscope. Based on this observation, how would these bacteria be classified?

Accepted Answer

C. Gram-positive bacilli. — Gram-positive bacteria retain the crystal violet stain due to their thick peptidoglycan layer, appearing purple under the microscope. Rod-shaped bacteria are referred to as bacilli. Therefore, purple, rod-shaped bacteria are classified as Gram-positive bacilli. Gram-negative bacteria would appear pink or red, and cocci are spherical, not rod-shaped.

Answer

A. Gram-positive cocci.

Answer

B. Gram-negative bacilli.

Answer

D. Gram-negative cocci.

Question 2

BPCL Kochi Refinery:‌​‍

Accepted Answer

Ambalamugal — Ambalamugal.‌​‍

Answer

Tripunithura

Answer

Ernakulam city

Answer

Willingdon

Question 3

What is the functional unit of the kidney?‌​‍

Accepted Answer

Nephron — ~1 million per kidney. ‌​‍Components: Bowman's capsule, PCT, loop of Henle, DCT, collecting duct.

Answer

Neuron

Answer

Alveolus

Answer

Bronchiole

Question 4

Which chemical is used in fire extinguishers?‌​‍

Accepted Answer

Sodium bicarbonate — Sodium bicarbonate releases CO₂ to smother flames.‌​‍

Answer

Potassium bicarbonate

Answer

Sodium chloride

Answer

Sodium nitrate

Question 5

Structuralism was founded by:

Accepted Answer

Wundt and Titchener — Analyse conscious experience into basic elements via introspection. Functionalism (William James): purpose of behavior.

Answer

Freud

Answer

Watson

Answer

James

Question 6

Deepa Karmakar qualified for Rio 2016 Olympics after defeating:‌​‍

Accepted Answer

Oksana Chusovitina — Deepa qualified at Rio test event (2016), defeated by Oksana Chusovitina in some rounds; she became first Indian female gymnast to qualify for Olympics.‌​‍

Answer

Yelena Produnova

Answer

Aliya Mustafina

Answer

Simone Biles

Question 7

D. Gukesh became the youngest World Chess Champion in 2024 at age:‌​‍

Accepted Answer

18 — D. ‌​‍Gukesh from India became the youngest World Chess Champion at age 18, defeating Ding Liren in 2024.

Answer

19

Answer

17

Answer

16

Question 8

Whose autobiography is known as 'Ente Jeevitha Smaranakal'?

Accepted Answer

K. Kelappan — K. Kelappan's autobiography.

Answer

E.M.S. Namboodiripad

Answer

Vaikom Muhammad Basheer

Answer

Mannathu Padmanabhan

Question 9

State X and State Y are embroiled in a complex dispute over maritime boundaries, with State X accusing State Y of violating international law by encroaching on its territorial waters. Considering the primary functions of key UN organs, which statement best describes the distinct roles the UN General Assembly (UNGA) and the International Court of Justice (ICJ) would play in addressing this situation?

Accepted Answer

B. The ICJ is the principal judicial organ, providing legally binding judgments on disputes between states, whereas the UNGA serves as the main deliberative body for discussing broader international issues and making recommendations. — The International Court of Justice (ICJ) is the principal judicial organ of the UN, empowered to settle legal disputes between states and issue advisory opinions on legal questions referred to it. Its judgments are legally binding on the states involved. In contrast, the UN General Assembly (UNGA) is the main deliberative, policymaking, and representative organ of the UN, discussing a wide range of international issues and making recommendations, which are generally not legally binding on member states. Neither body directly imposes economic sanctions, which is primarily a function of the Secu

Answer

A. The UNGA can issue legally binding judgments to resolve the boundary dispute, while the ICJ primarily provides advisory opinions upon request.

Answer

C. Both the UNGA and the ICJ have the authority to impose economic sanctions on the state found to be in violation of international maritime law.

Answer

D. The UNGA's jurisdiction is limited to humanitarian crises, while the ICJ has universal jurisdiction over all types of international legal disputes.

Question 10

Punjab was reorganised into Punjab, Haryana, and (UT) Chandigarh in:‌​‍

Accepted Answer

1966 — Punjab Reorganisation Act 1966. ‌​‍Haryana became a state on 1 November 1966. Chandigarh made UT (shared capital).

Answer

1971

Answer

1960

Answer

1956

DCOA Mixed Practice Test #403