DCOA Mixed Practice Test #207

Question 1

Aluminium hydroxide is a common ingredient in antacid preparations. Its mechanism of action in reducing gastric acidity primarily involves:

Accepted Answer

B. Neutralizing hydrochloric acid in the stomach. — Aluminium hydroxide acts as an antacid by directly reacting with and neutralizing hydrochloric acid in the stomach, forming water and aluminium chloride. This increases the pH of the gastric contents, alleviating symptoms of indigestion and heartburn. Other options describe mechanisms of different classes of acid-reducing agents.

Answer

A. Inhibiting the H+/K+-ATPase proton pump.

Answer

C. Forming a protective barrier over the gastric mucosa.

Answer

D. Reducing histamine release from enterochromaffin-like cells.

Question 2

K. Ayyappan, disciple of Narayana Guru, is associated with:‌​‍

Accepted Answer

Sahodara Sangham — K. ‌​‍Ayyappan founded the Sahodara Sangham (Brotherhood Association) at Cherai, promoting inter-caste dining and social equality.

Answer

SNDP Yogam

Answer

NSS

Answer

Muslim League

Question 3

Edakkal Caves with ancient petroglyphs are in which district?

Accepted Answer

Wayanad — Edakkal Caves in Wayanad contain Stone Age petroglyphs dating back to 6000 BCE.

Answer

Idukki

Answer

Palakkad

Answer

Kannur

Question 4

Kolathiri (Kannur area):

Accepted Answer

Kolathiri dynasty — North Malabar.

Answer

Venad

Answer

Perumpadappu

Answer

Other

Question 5

Magnesium hydroxide, commonly known as milk of magnesia, is an effective antacid. Its mechanism of action primarily involves:

Accepted Answer

C. Neutralizing excess stomach acid through a chemical reaction. — Magnesium hydroxide is a basic compound that directly reacts with hydrochloric acid in the stomach (HCl) to form water and magnesium chloride, thereby neutralizing the acid. Proton pump inhibitors inhibit proton pump activity, sucralfate forms a protective barrier, and H2 blockers reduce histamine stimulation.

Answer

A. Inhibiting proton pump activity in gastric parietal cells.

Answer

B. Forming a protective barrier over the stomach lining.

Answer

D. Reducing histamine H2 receptor stimulation.

Question 6

Bekal Fort is in:‌​‍

Accepted Answer

Kasaragod — Bekal Fort — largest fort in Kerala, Kasaragod district.‌​‍

Answer

Kozhikode

Answer

Kannur

Answer

Thrissur

Question 7

Father of Electricity is:‌​‍

Accepted Answer

Michael Faraday — Michael Faraday is called the father of electricity for his work on electromagnetic induction.‌​‍

Answer

J.J. Thomson

Answer

André-Marie Ampère

Answer

Thomas Edison

Question 8

In the preparation of a sterile ophthalmic solution, which of the following is MOST critical to ensure patient safety?

Accepted Answer

D. Filtering the solution through a 0.22-micron membrane filter — A 0.22-micron filter removes bacteria and particulate matter, which is essential for sterile ophthalmic preparations. While preservatives and pH are important, they do not guarantee sterility. Autoclaving after filtration may degrade heat-sensitive drugs.

Answer

A. Using a preservative with a broad spectrum of activity

Answer

B. Ensuring the pH of the solution is 7.4

Answer

C. Sterilizing the solution by autoclaving after filtration

Question 9

Global warming is primarily caused by:‌​‍

Accepted Answer

Increased greenhouse gases like CO₂ — GHGs (CO₂, CH₄, N₂O, water vapour) trap IR radiation → warming.

Answer

Depletion of ozone

Answer

Excess oxygen

Answer

Solar flares

Question 10

Continuous and Comprehensive Evaluation (CCE) emphasizes the assessment of both scholastic and co-scholastic aspects of a student's growth. Which of the following is a key characteristic of the 'comprehensive' aspect of CCE?

Accepted Answer

C. Inclusion of life skills, attitudes, values, and physical education alongside academic performance. — The 'comprehensive' aspect of CCE refers to the holistic evaluation of a student's development, encompassing not only scholastic areas (academic subjects) but also co-scholastic areas such as life skills, attitudes, values, health, and physical education. Options A and B contradict the 'continuous' and 'comprehensive' nature, respectively, while D describes a criterion-referenced approach.

Answer

A. Evaluation conducted only at the end of the academic year.

Answer

B. Assessment of only academic subjects like Maths and Science.

Answer

D. Comparison of student performance against a pre-defined pass/fail criterion.

DCOA Mixed Practice Test #207