DCOA Mixed Practice Test #467

Question 1

Which enzyme, primarily secreted by the stomach, is responsible for initiating the digestion of proteins into smaller polypeptides?

Accepted Answer

C. Pepsin — Pepsin is the principal enzyme secreted by the chief cells in the stomach lining. It functions in the highly acidic environment of the stomach to break down proteins into smaller polypeptides. Amylase digests carbohydrates, lipase digests fats, and trypsin is a pancreatic enzyme that continues protein digestion in the small intestine.

Answer

A. Amylase

Answer

B. Lipase

Answer

D. Trypsin

Question 2

Which literary form is MOST effective for teaching complex scientific concepts to high school students, given that it combines narrative with factual information?

Accepted Answer

D. Graphic novel — A graphic novel effectively combines visual and textual elements, making abstract or complex scientific concepts more accessible and engaging for students. Short stories and fables are narrative forms that may lack sufficient factual detail, while expository essays, though informative, are less visually engaging for classroom retention.

Answer

A. Short story

Answer

B. Fable

Answer

C. Expository essay

Question 3

University of Travancore year:‌​‍

Accepted Answer

1937 — Founded 1937.‌​‍

Answer

1957

Answer

1925

Answer

1947

Question 4

The merger of Travancore and Cochin in 1949, forming the United State of Travancore and Cochin, was not merely an administrative consolidation but also held significant strategic importance for the nascent Indian Union. From the perspective of the central government's long-term vision for regional development and stability, which of the following best describes a key strategic advantage sought through this specific merger?

Accepted Answer

B. To forge a more economically viable and resource-rich entity by combining Travancore's agricultural and industrial base with Cochin's strategic port and trade infrastructure, thereby strengthening the southern region. — The merger aimed to create a robust economic unit in the south. By combining Travancore's fertile agricultural lands, growing industries, and revenues with Cochin's vital port and trade networks, the central government sought to establish a self-sustaining and prosperous regional entity. This consolidation was crucial for enhancing overall economic stability and facilitating planned development within the newly independent India, aligning with the broader goal of integrating viable units into the Union.

Answer

A. To establish a preliminary framework for linguistic states, anticipating the future demands for Kerala by combining Malayalam-speaking regions.

Answer

C. To test a novel model of integrating princely states where traditional rulers would retain substantial executive powers, thereby ensuring a smoother transition for larger states like Hyderabad and Mysore.

Answer

D. To create a buffer state against potential maritime threats in the Arabian Sea, utilizing the combined naval resources and coastline of the two former kingdoms.

Question 5

Which of the following chelating agents is commonly used in the treatment of lead poisoning?

Accepted Answer

C. Dimercaprol (BAL) — Dimercaprol (British Anti-Lewisite, BAL) is a classic chelating agent used to treat poisoning by heavy metals such as lead, arsenic, and mercury. It forms stable, non-toxic complexes with these metals, allowing them to be excreted from the body. Activated charcoal is for general toxin adsorption, while atropine and naloxone are antidotes for specific drug overdoses (cholinergic and opioid, respectively).

Answer

A. Activated charcoal

Answer

B. Atropine

Answer

D. Naloxone

Question 6

The Contact process manufactures:‌​‍

Accepted Answer

H₂SO₄ — Contact: S → SO₂ → SO₃ (V₂O₅ catalyst) → oleum → H₂SO₄.‌​‍

Answer

NH₃

Answer

HCl

Answer

HNO₃

Question 7

During a microteaching lesson, a teacher notices that students are becoming disengaged and their attention is wavering. To re-capture their focus using the 'Stimulus Variation Skill', which action would be most appropriate?

Accepted Answer

B. Change their position in the classroom, alter their voice modulation, and use gestures. — The 'Stimulus Variation Skill' involves changing the teacher's behavior (movement, gestures, voice modulation, focusing, pausing) to maintain student attention and prevent monotony. Option B directly applies these elements to vary the stimulus and re-engage students. Options A, C, and D are other teaching techniques but do not primarily represent the 'Stimulus Variation Skill' for re-engagement.

Answer

A. Ask a student to summarize the last point discussed.

Answer

C. Write down the key points on the blackboard for students to copy.

Answer

D. Provide a short quiz to assess their understanding of the topic so far.

Question 8

Rural-urban continuum concept means:‌​‍

Accepted Answer

Continuous gradient between rural and urban, not binary — Louis Wirth and later scholars — communities fall along spectrum; rural-urban differences gradual, not absolute.‌​‍

Answer

Only rural matters

Answer

Strict division

Answer

Only urban matters

Question 9

First Malayalam newspaper:‌​‍

Accepted Answer

Rajyasamacharam 1847 — Rajyasamacharam by Hermann Gundert 1847.‌​‍

Answer

Mathrubhumi

Answer

Malayala Manorama

Answer

Deepika

Question 10

Before teaching a new chapter on the 'Structure of the Atom', a science teacher presents a short lecture on the historical development of atomic models and their relevance, thereby providing a general framework for the upcoming detailed information. This pedagogical technique is a prime example of Ausubel's concept of:

Accepted Answer

B. Advance organizers — David Ausubel's theory of meaningful verbal learning advocates for the use of advance organizers. These are introductory materials presented before new learning to provide a conceptual framework, link new information to existing knowledge, and facilitate the assimilation of complex material, making the subsequent learning more meaningful.

Answer

A. Reciprocal teaching

Answer

C. Discovery learning

Answer

D. Scaffolding

DCOA Mixed Practice Test #467